WO2024177281A1 - 플렉서블 디스플레이 및 이를 포함하는 전자 장치 - Google Patents
플렉서블 디스플레이 및 이를 포함하는 전자 장치 Download PDFInfo
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- WO2024177281A1 WO2024177281A1 PCT/KR2024/000614 KR2024000614W WO2024177281A1 WO 2024177281 A1 WO2024177281 A1 WO 2024177281A1 KR 2024000614 W KR2024000614 W KR 2024000614W WO 2024177281 A1 WO2024177281 A1 WO 2024177281A1
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- glass portion
- transparent member
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- housing
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- Various embodiments of the present disclosure relate to a bendable flexible display and an electronic device including the same.
- flexible electronic devices including flexible displays that can be bent
- window members used in flexible displays have not only impact resistance through surface hardness or strength, but also flexibility to prevent deformation when bent or folded.
- Various embodiments of the present disclosure can include a transparent member with improved warpage and strength, and a flexible display including the same.
- a flexible transparent member may include a first glass portion having a first thickness, a second glass portion having a second thickness thinner than the first thickness, and a resin portion at least partially disposed on the second glass portion.
- An upper surface of the second glass portion may have a shape that is recessed downward with respect to an upper surface of the first glass portion.
- a lower surface of the second glass portion may have a shape that is recessed upward with respect to a lower surface of the first glass portion.
- the resin portion may be filled within the recessed area.
- a flexible display may include a display panel and a transparent member disposed on the display panel.
- the transparent member may include a first glass portion having a first thickness, and a second glass portion having a second thickness thinner than the first thickness.
- An upper surface of the second glass portion may have a shape that is recessed in a direction toward the display panel with respect to an upper surface of the first glass portion.
- a lower surface of the second glass portion may have a shape that is recessed in a direction opposite to the display panel with respect to a lower surface of the first glass portion.
- An electronic device may include a housing including a first housing and a second housing, a hinge connected to the first housing and the second housing, and a flexible display at least partially accommodated in the first housing and the second housing.
- the flexible display may include a display panel, and a transparent member disposed on the display panel.
- the transparent member may include a first glass portion having a first thickness, and a second glass portion having a second thickness thinner than the first thickness.
- An upper surface of the second glass portion may have a shape that is recessed in a direction toward the display panel with respect to an upper surface of the first glass portion.
- a lower surface of the second glass portion may have a shape that is recessed in a direction opposite to the display panel with respect to a lower surface of the first glass portion.
- internal stress can be evenly distributed by etching not only the upper side but also the lower side for a thin portion.
- a chemically strengthened region can be formed in a transparent member having differential thicknesses so that each of a thick portion and a thin portion has a different reinforcement depth, thereby preventing a warpage phenomenon.
- the effects obtainable from the exemplary embodiments of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by a person having ordinary skill in the art to which the exemplary embodiments of the present disclosure belong from the following description. That is, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by a person having ordinary skill in the art from the exemplary embodiments of the present disclosure.
- FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.
- FIG. 2A is a perspective view of an electronic device in an unfolding state according to one embodiment.
- FIG. 2b is a perspective view of an electronic device in a folding state according to one embodiment.
- FIG. 3 is an exploded view of an electronic device according to one embodiment.
- FIG. 4A is a plan view of a flexible display according to one embodiment.
- FIG. 4b is an exploded perspective view of a flexible display according to one embodiment.
- FIG. 5 is a flowchart for explaining a manufacturing process of a transparent member included in the flexible display of FIG. 4a.
- FIGS. 6A to 6E are cross-sectional views illustrating a manufacturing process of a transparent member according to one embodiment.
- FIG. 7a is a cross-sectional view of a transparent member according to one embodiment.
- Figure 7b is a cross-sectional view of a transparent member with added resin in Figure 7a.
- Figure 8 is a cross-sectional view of a transparent member according to another embodiment.
- Figure 9 is a cross-sectional view of a transparent member according to another embodiment.
- Fig. 10 is a cross-sectional view of a transparent member according to another embodiment.
- FIGS. 11a and 11b are drawings of a transparent member according to another embodiment.
- Figure 11c is a cross-sectional view of a transparent member according to another embodiment.
- Fig. 12 is a cross-sectional view of a transparent member according to another embodiment.
- FIG. 13 is a plan view of a flexible display that can be folded multiple times according to another embodiment.
- Fig. 14 is a cross-sectional view of a transparent member included in the flexible display of Fig. 13.
- FIGS. 15A and 15B are front and back views of an electronic device in a closed state according to one embodiment.
- FIGS. 16A and 16B are front and back views of an electronic device in an open state according to one embodiment.
- FIGS. 17A and 17B are perspective views of a flexible display according to one embodiment.
- Fig. 18 is a cross-sectional view of a transparent member according to one embodiment.
- Fig. 19 is a cross-sectional view of a transparent member according to another embodiment.
- FIG. 20 is a drawing of an electronic device in a closed state according to one embodiment.
- FIG. 21 is a drawing of an electronic device in an open state according to one embodiment.
- FIGS. 22A and 22B are perspective views of a flexible display according to one embodiment.
- FIG. 23 is a cross-sectional view of a transparent member according to one embodiment.
- Fig. 24 is a cross-sectional view of a transparent member according to another embodiment.
- FIG. 25 is a drawing of an electronic device in a closed state according to one embodiment.
- FIG. 26 is a drawing of an electronic device in an open state according to one embodiment.
- Figure 27 is a cross-sectional view of a transparent member according to one embodiment.
- Fig. 28 is a cross-sectional view of a transparent member according to another embodiment.
- Figures 29 and 30 are tables for explaining the difference in expansion length of transparent members having differential thicknesses according to the chemical strengthening depth ratio.
- FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments.
- an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network), or may communicate with an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network).
- the electronic device (101) may communicate with the electronic device (104) through the server (108).
- the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197).
- the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added.
- some of these components e.g., the sensor module (176), the camera module (180), or the antenna module (197) may be integrated into one component (e.g., the display module (160)).
- the processor (120) may control at least one other component (e.g., a hardware or software component) of an electronic device (101) connected to the processor (120) by executing, for example, software (e.g., a program (140)), and may perform various data processing or calculations.
- the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store result data in a nonvolatile memory (134).
- the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121).
- a main processor (121) e.g., a central processing unit or an application processor
- an auxiliary processor (123) e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor
- the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function.
- the auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.
- the auxiliary processor (123) may control at least a portion of functions or states associated with at least one of the components of the electronic device (101) (e.g., the display module (160), the sensor module (176), or the communication module (190)), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state.
- the auxiliary processor (123) e.g., an image signal processor or a communication processor
- the auxiliary processor (123) may include a hardware structure specialized for processing artificial intelligence models.
- the artificial intelligence models may be generated through machine learning. Such learning may be performed, for example, in the electronic device (101) on which artificial intelligence is performed, or may be performed through a separate server (e.g., server (108)).
- the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above.
- the artificial intelligence model may include a plurality of artificial neural network layers.
- the artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-networks, or a combination of two or more of the above, but is not limited to the examples described above.
- the artificial intelligence model may additionally or alternatively include a software structure.
- the memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101).
- the data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto.
- the memory (130) can include volatile memory (132) or nonvolatile memory (134).
- the program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).
- the input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101).
- the input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).
- the audio output module (155) can output an audio signal to the outside of the electronic device (101).
- the audio output module (155) can include, for example, a speaker or a receiver.
- the speaker can be used for general purposes such as multimedia playback or recording playback.
- the receiver can be used to receive an incoming call. According to one embodiment, the receiver can be implemented separately from the speaker or as a part thereof.
- the display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101).
- the display module (160) can include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device.
- the display module (160) can include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.
- the audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can obtain sound through an input module (150), or output sound through an audio output module (155), or an external electronic device (e.g., an electronic device (102)) (e.g., a speaker or a headphone) directly or wirelessly connected to the electronic device (101).
- an electronic device e.g., an electronic device (102)
- a speaker or a headphone directly or wirelessly connected to the electronic device (101).
- the sensor module (176) can detect an operating state (e.g., power or temperature) of the electronic device (101) or an external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state.
- the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.
- the interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)).
- the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
- HDMI high definition multimedia interface
- USB universal serial bus
- SD card interface Secure Digital Card
- connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., the electronic device (102)).
- the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).
- the haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that a user can perceive through a tactile or kinesthetic sense.
- the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
- the camera module (180) can capture still images and moving images.
- the camera module (180) can include one or more lenses, image sensors, image signal processors, or flashes.
- the power management module (188) can manage power supplied to the electronic device (101).
- the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
- PMIC power management integrated circuit
- the battery (189) can power at least one component of the electronic device (101).
- the battery (189) can include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.
- the communication module (190) may support establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., the electronic device (102), the electronic device (104), or the server (108)), and performance of communication through the established communication channel.
- the communication module (190) may operate independently from the processor (120) (e.g., the application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication.
- the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module or a power line communication module).
- a wireless communication module (192) e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module
- GNSS global navigation satellite system
- wired communication module (194) e.g., a local area network (LAN) communication module or a power line communication module.
- a corresponding communication module may communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)).
- a first network (198) e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
- a second network (199) e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)
- a computer network e.g.,
- the wireless communication module (192) may use subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196) to identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199).
- subscriber information e.g., an international mobile subscriber identity (IMSI)
- IMSI international mobile subscriber identity
- the wireless communication module (192) can support a 5G network and next-generation communication technology after a 4G network, for example, NR access technology (new radio access technology).
- the NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), terminal power minimization and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)).
- eMBB enhanced mobile broadband
- mMTC massive machine type communications
- URLLC ultra-reliable and low-latency communications
- the wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate.
- a high-frequency band e.g., mmWave band
- the wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna.
- the wireless communication module (192) can support various requirements specified in an electronic device (101), an external electronic device (e.g., an electronic device (104)), or a network system (e.g., a second network (199)).
- the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL) each, or 1 ms or less for round trip) for URLLC realization.
- a peak data rate e.g., 20 Gbps or more
- a loss coverage e.g., 164 dB or less
- U-plane latency e.g., 0.5 ms or less for downlink (DL) and uplink (UL) each, or 1 ms or less for round trip
- the antenna module (197) can transmit or receive signals or power to or from the outside (e.g., an external electronic device).
- the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB).
- the antenna module (197) may include a plurality of antennas (e.g., an array antenna).
- at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199) may be selected from the plurality of antennas by, for example, the communication module (190).
- a signal or power may be transmitted or received between the communication module (190) and the external electronic device through the selected at least one antenna.
- another component e.g., a radio frequency integrated circuit (RFIC)
- RFIC radio frequency integrated circuit
- the antenna module (197) may form a mmWave antenna module.
- the mmWave antenna module may include a printed circuit board, an RFIC positioned on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) positioned on or adjacent a second side (e.g., a top side or a side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.
- a first side e.g., a bottom side
- a plurality of antennas e.g., an array antenna
- At least some of the above components can be connected to each other and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).
- peripheral devices e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).
- commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199).
- Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101).
- all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of executing the function or service itself or in addition, request one or more external electronic devices to perform at least a part of the function or service.
- One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101).
- the electronic device (101) may process the result as is or additionally and provide it as at least a part of a response to the request.
- cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
- the electronic device (101) may provide an ultra-low latency service by using, for example, distributed computing or mobile edge computing.
- the external electronic device (104) may include an IoT (Internet of Things) device.
- the server (108) may be an intelligent server using machine learning and/or a neural network.
- the external electronic device (104) or the server (108) may be included in the second network (199).
- the electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.
- FIG. 2A is a perspective view of an electronic device in an unfolding state according to one embodiment.
- FIG. 2B is a perspective view of the electronic device in a folding state according to one embodiment.
- FIG. 3 is an exploded view of the electronic device according to one embodiment.
- the electronic devices illustrated in FIGS. 2A to 3 are for illustrative purposes only, and the present disclosure is not limited by the drawings.
- the X-Y-Z coordinate system illustrated in FIGS. 2A to 3 is for illustrative purposes only, and does not limit the scope of the rights.
- An electronic device (200) may include at least one pair of housings (210, 220).
- the pair of housings (210, 220) may be rotatably coupled to face each other and folded based on, for example, a hinge (e.g., a hinge (240) of FIG. 3).
- the pair of housings (210, 220) may include a first housing (210) and a second housing (220).
- the first housing (210) and the second housing (220) may be arranged on both sides with a folding axis (F) as the center.
- One end region of the first housing (210) and one end region of the second housing (220) may be arranged side by side with the hinge (240) therebetween.
- the first housing (210) and the second housing (220) may have a shape symmetrical about a plane extending in the Z1-axis direction and including a folding axis (F).
- the folding axis (F) may be an X1-direction axis formed by a hinge (240).
- the first housing (210) may have substantially the same length (e.g., length in the Y1-axis direction) as the second housing (220), but is not limited thereto.
- the first housing (210) may have substantially the same width (e.g., width in the X1-axis direction) as the second housing (220), but is not limited thereto.
- the 'unfolding state' or 'flat state' may refer to a state in which the angle formed by the first housing (210) and the second housing (220) is substantially 180 degrees.
- the 'folding state' or 'folded state' may refer to a state in which the angle formed by the first housing (210) and the second housing (220) is substantially 0 degrees.
- the 'intermediate state' may refer to any state between the unfolding state and the folded state.
- the first housing (210) and the second housing (220) may rotate about the hinge (240) to form an angle of 0 to 180 degrees.
- the first housing (210) and the second housing (220) may rotate about a hinge (240) between 180 degrees and 360 degrees.
- the first housing (210) may include a first surface (210a) and a second surface (210b).
- the first surface (210a) may be provided to face, for example, in a first direction (e.g., in the +Z1-axis direction).
- the first surface (210a) may be, for example, a surface on which at least a portion of the flexible display (230) is disposed.
- the first surface (210a) may refer to, for example, a virtual surface that overlaps at least a portion of the flexible display (230).
- the second surface (210b) may be provided to face, for example, in a second direction (e.g., in the -Z1-axis direction).
- the second surface (210b) may be, for example, a surface on which the first rear cover (212) is disposed.
- the second surface (210b) may be parallel to the first surface (210a).
- the second surface (210b) may refer to a plane defined by, for example, the first rear cover (212).
- the second housing (220) may include a third surface (220a) and a fourth surface (220b).
- the third surface (220a) may be provided to face, for example, in a first direction (e.g., in the +Z1 axis direction).
- the third surface (220a) may be, for example, a surface on which at least a portion of the flexible display (230) is disposed.
- the third surface (220a) may refer to, for example, a virtual surface that overlaps at least a portion of the flexible display (230).
- the fourth surface (220b) may be provided to face, for example, in a second direction (e.g., in the -Z1 axis direction).
- the fourth surface (220b) may be, for example, a surface on which the second rear cover (222) is disposed.
- the fourth surface (220b) may be parallel to the third surface (220a).
- the fourth surface (220b) may refer to a plane defined by, for example, the second rear cover (222).
- the first side (210a) and the third side (220a) may be positioned within one arbitrary virtual plane (e.g., x-y plane).
- the first side (210a) and the third side (220a) may form the same plane when the electronic device (200) is unfolded.
- the first side (210a) and the third side (220a) may be arranged to form 180 degrees with respect to the x-y plane when the electronic device (200) is unfolded.
- the second side (210b) and the fourth side (220b) may be positioned within another arbitrary virtual plane (e.g., x-y plane).
- the second side (210b) and the fourth side (220b) may form the same plane when the electronic device (200) is unfolded.
- the second side (210b) and the fourth side (220b) can be arranged to form 180 degrees with respect to the x-y plane when unfolded.
- a folded state of the electronic device (200) at least a portion of the first side (210a) and at least a portion of the third side (220a) may face each other.
- an angle formed by the first side (210a) and the third side (220a) may be 0 degrees with respect to the x-y plane.
- the angle formed by the first side (210a) and the third side (220a) with respect to the x-y plane may gradually decrease.
- an angle formed by the first side (210a) and the third side (220a) with respect to the x-y plane may be determined between about 0 degrees and about 180 degrees.
- the second side (210b) and the fourth side (220b) may be parallel to each other.
- the second side (210b) and the fourth side (220b) may face opposite directions when the electronic device (200) is folded.
- a pair of housings (210, 220) included in the electronic device (200) are not limited to the illustrated shape and combination, and may be implemented by a combination and/or combination of other shapes or parts.
- the first housing (210) may include a first side frame (211).
- the first side frame (211) may constitute a side of the first housing (210).
- the first side frame (211) may constitute a part of the exterior of the first housing (210).
- the first side frame (211) may be provided to protect components accommodated inside the electronic device (200) from the outside.
- the first side frame (211) may include a first side member (211a), a second side member (211b), and/or a third side member (211c).
- the first side member (211a) may have a first length along a first longitudinal direction (e.g., along the Y1-axis direction).
- the second side member (211b) may extend from the first side member (211a) in a substantially perpendicular direction (e.g., along the X1-axis direction).
- the second side member (211b) may extend to have a second length that is the same as or different from the first length.
- the third side member (211c) may extend from the second side member (211b) in a substantially perpendicular direction (e.g., along the Y1-axis direction).
- the third side member (211c) may extend in a direction substantially parallel to the first side member (211a).
- the third side member (211c) may have a first length along a first longitudinal direction (e.g.,
- the first side member (211a), the second side member (211b), and the third side member (211c) can be arranged to be visible from the outside. At least a portion of the first side member (211a), the second side member (211b), and/or the third side member (211c) can be formed as a curved surface.
- the first side frame (211) can be formed into a rectangular shape (e.g., a square or a rectangle) by the first side member (211a), the second side member (211b), and the third side member (211c).
- the first side member (211a), the second side member (211b), and the third side member (211c) can be formed integrally, but are not limited thereto.
- the second housing (220) may include a second side frame (221).
- the second side frame (221) may constitute a side of the second housing (220).
- the second side frame (221) may constitute a part of the exterior of the second housing (220).
- the second side frame (221) may be provided to protect components accommodated inside the electronic device (200) from the outside.
- the second side frame (221) may include a fourth side member (221a), a fifth side member (221b), and/or a sixth side member (221c).
- the fourth side member (221a) may have a third length along a first longitudinal direction (e.g., along the Y1-axis direction).
- the fifth side member (221b) may extend from the fourth side member (221a) in a substantially perpendicular direction (e.g., along the X1-axis direction).
- the fifth side member (221b) may extend to have a fourth length that is the same as or different from the third length.
- the sixth side member (221c) may extend from the fifth side member (221b) in a substantially perpendicular direction (e.g., along the Y1-axis direction).
- the sixth side member (221c) may extend in a direction substantially parallel to the fourth side member (221a).
- the sixth side member (221c) may have a third length along the first longitudinal direction (e.g., the
- the fourth side member (221a), the fifth side member (221b), and the sixth side member (221c) may be arranged to be visible from the outside. At least a portion of the fourth side member (221a), the fifth side member (221b), and/or the sixth side member (221c) may be formed as a curved surface.
- the second side frame (221) may be formed into a rectangular (e.g., square or rectangular) shape by the fourth side member (221a), the fifth side member (221b), and the sixth side member (221c).
- the first length may be substantially equal to the third length.
- the second length may be substantially equal to the fourth length.
- the fourth side member (221a), the fifth side member (221b), and the sixth side member (221c) may be formed integrally, but is not limited thereto.
- the first side member (211a) and the fourth side member (221a) can be positioned substantially in a straight line.
- the second side member (211b) and the fifth side member (221b) can be parallel to each other.
- the third side member (211c) and the sixth side member (221c) can be positioned substantially in a straight line.
- the first side member (211a) and the fourth side member (221a) can be positioned to overlap each other.
- the second side member (211b) and the fifth side member (221b) can be positioned to overlap each other.
- the third side member (211c) and the sixth side member (221c) can be positioned to overlap each other.
- the first housing (210) may include a first rear cover (212).
- the first rear cover (212) may form at least a portion of the second side (210b) of the first housing (210).
- the first rear cover (212) may be coupled with the first side frame (211).
- the first rear cover (212) may be formed integrally with the first side frame (211), for example.
- the second housing (220) may include a second rear cover (222).
- the second rear cover (222) may form at least a portion of the fourth side (220b) of the second housing (220).
- the second rear cover (222) may be coupled with the second side frame (221).
- the second rear cover (222) may be formed integrally with the second side frame (221), for example.
- the first rear cover (212) and/or the second rear cover (222) may be formed of, for example, at least one or a combination of coated or colored glass, ceramic, glasstic, polymer, or metal (e.g., aluminum, stainless steel (STS), or magnesium).
- metal e.g., aluminum, stainless steel (STS), or magnesium.
- the electronic device (200) may include a flexible display (230) (e.g., a foldable display or display).
- the flexible display (230) may be arranged across the first housing (210), the hinge (240), and the second housing (220).
- the flexible display (230) may be arranged to extend from a first surface (210a) of the first housing (210) across the hinge (240) to at least a portion of a third surface (220a) of the second housing (220).
- the flexible display (230) may be arranged such that the first surface (210a) of the first housing (210) and the third surface (220a) of the second housing (220) overlap each other.
- the flexible display (230) may have a portion corresponding to the hinge (240) that may be bent according to the rotation of the hinge (240).
- the flexible display (230) can be arranged so as to be visible from the outside when in an unfolded state.
- the flexible display (230) can be arranged so as not to be visible from the outside when in a folded state.
- the electronic device (200) may include a protective cover (231).
- the protective cover (231) may be positioned so as to protect an edge portion of the flexible display (230).
- the protective cover (231) may form part of the exterior of the electronic device (200).
- the electronic device (200) may include at least one of an input device (e.g., a microphone (203)), an audio output device (e.g., a call receiver (201) or a speaker (202)), a sensor module (204), a camera module (a first camera module (205) or a second camera module (208)), a connector port (207), a key input device (not shown), or an indicator (not shown) disposed in a first internal space (214) of a first housing (210) or a second internal space (224) of a second housing (220).
- the electronic device (200) may be configured such that at least one of the above-described components is omitted, or other components are additionally included.
- the input device may include a plurality of microphones arranged to detect the direction of sound.
- the audio output device may include, for example, a call receiver (201) and a speaker (202).
- the audio output device (201, 202) may be arranged to face the outside through at least one speaker hole formed in the first housing (210) or the second housing (220).
- the connector port (207) may be arranged to face the outside through a connector port hole formed in the first housing (210) or the second housing (220).
- the sensor module (204) can generate an electric signal or data value corresponding to an internal operating state of the electronic device (200) or an external environmental state.
- the sensor module (204) can include at least one of a proximity sensor, an illuminance sensor, a TOF (time of flight) sensor, an ultrasonic sensor, a fingerprint recognition sensor, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, or a humidity sensor.
- the camera module may include a first camera module (205) disposed on the front side (e.g., the +Z1-axis direction side) of the electronic device (200) or a second camera module (208) disposed on the rear side (e.g., the -Z1-axis direction side).
- the first camera module (205) and/or the second camera module (208) may include one or more lenses, an image sensor, and/or an image signal processor.
- the first camera module (205) may be disposed under the flexible display (230) and configured to capture a subject through a part of an active area of the flexible display (230).
- a flash (209) may be positioned in the second camera module (208).
- the flash (209) may include, for example, a light-emitting diode or a xenon lamp.
- FIG. 4a is a plan view of a flexible display according to one embodiment.
- FIG. 4b is an exploded perspective view of a flexible display according to one embodiment.
- the flexible display (230) may include a first region (230a) and a second region (230b) extending from the first region (230a).
- the first region (230a) may refer to a planar region that maintains a plane even when the electronic device (e.g., the electronic device (200) of FIG. 2A) is folded around the folding axis (F).
- the first region (230a) may refer to a region that is not deformed when the electronic device (200) is folded around the folding axis (F).
- the first region (230a) may refer to a non-flexible region.
- the second region (230b) may refer to a bending region or flexible region that is bent when the electronic device (200) is folded around the folding axis (F).
- the second region (230b) may refer to a region that is deformable when the electronic device (200) is folded around the folding axis (F).
- the second region (230b) may be located between the two first regions (230a).
- the second region (230b) may be formed to be symmetrical with respect to the folding axis (F), for example, but is not limited thereto.
- the second region (230b) may refer to, for example, a region having a predetermined length with respect to the folding axis (F).
- the flexible display (230) may include a display panel and a transparent member (e.g., the transparent member of FIGS. 7A to 12).
- the display panel may include a flexible region (e.g., a second region (230b)) (or a deformable region) and a non-flexible region (e.g., a first region (230a)) adjacent to the flexible region, similar to the flexible display (230).
- the display panel may be arranged to display an image.
- the display panel may be, for example, an emissive display panel, but is not limited thereto.
- the display panel may be, for example, an organic light-emitting display panel or a quantum dot light-emitting display panel.
- An emissive layer of an organic light-emitting display panel may include an organic light-emitting material.
- An emissive layer of a quantum dot light-emitting display panel may include quantum dots and quantum rods.
- the display panel may be flexible.
- the transparent member (300) (or window) may be arranged, for example, on a display panel.
- Another component e.g., an input detection unit
- the transparent member (300) may include an optically transparent insulating material. Accordingly, an image generated on the display panel may be easily transmitted to a user by penetrating the transparent member (300).
- the transparent member (300) can prevent the display panel from being damaged or malfunctioning due to external impact by allowing the image generated from the display panel to pass through and at the same time alleviating external impact.
- the external impact refers to a force applied from the outside, such as pressure or stress, and can refer to a force that causes damage to the display panel.
- the flexible display (230) may include a protective member (232) (e.g., a protective film), a transparent member (233), and a display panel (234).
- a protective member e.g., a protective film
- the flexible display (230) may be configured such that the protective member (232), the transparent member (233), and the display panel (234) are sequentially laminated from the upper side.
- Each configuration may be bonded by an adhesive member (P1, P2), but is not limited thereto.
- the adhesive member (P1, P2) may include at least one of an optically clear adhesive film (OCA), an optically clear resin (OCR), a pressure sensitive adhesive film (PSA), a heat-reactive adhesive, a general adhesive, or a double-sided tape.
- the adhesive member (P1, P2) includes a photocurable adhesive material or a heat-curable adhesive material, and the material thereof is not particularly limited.
- the adhesive member (P1, P2) may include, for example, at least one of a first adhesive member (P1) provided to adhere the protective member (232) and the transparent member (233), and a second adhesive member (P2) provided to adhere the transparent member (233) and the display panel (234).
- the first adhesive member (P1) may be arranged to be attached to at least a portion of the upper surface of the transparent member (233).
- the second adhesive member (P2) may be arranged to be attached to at least a portion of the lower surface of the transparent member (233).
- the first adhesive member (P1) may be attached to a portion of the upper surface of the transparent member (233)
- the second adhesive member (P2) may be attached to the remaining portion of the upper surface of the transparent member (233).
- Adhesive members having different physical properties may be provided around the transparent member (233) in various ways and structures.
- the configuration illustrated in FIG. 4b is an example for convenience of explanation, and the flexible display (230) may further include additional configurations.
- various types of layers such as a touch sensing layer, may be provided on the upper side of the display panel (234).
- the touch sensing layer may be configured to obtain coordinate accuracy of an external input.
- the touch sensing layer may be, for example, an electrostatic capacitive touch sensing member.
- the present invention is not limited thereto, and may be replaced with a touch sensing layer of another type, such as an electromagnetic induction method, including two types of touch electrodes.
- the display panel (234) may be disposed on the lower side of the transparent member (233).
- the display panel (234) may be disposed on the lower side of the transparent member (233) with, for example, a polarizing layer (235) therebetween.
- the display panel (234) may be a display panel such as an organic light-emitting display panel, an electrophoretic display panel, an electrowetting display panel, or a quantum dot display panel, but the type thereof is not limited.
- the light-emitting layer of the organic light-emitting display panel may include an organic light-emitting material.
- the light-emitting layer of the quantum dot display panel may include quantum dots and quantum rods.
- the display panel (234) may be formed such that at least a portion is bendable.
- the display panel (234) may be formed such that at least a portion is deformable.
- the flexible display (230) may include a polarizing layer (235).
- the polarizing layer (235) may be disposed on the display panel (234).
- the polarizing layer (235) may be disposed between the transparent member (233) and the display panel (234).
- the polarizing layer (235) may absorb or cancel out incident light from the outside to reduce the external light reflectance of the flexible display (230).
- the polarizing layer (235) may be formed integrally with the display panel (234) by a continuous process.
- the polarizing layer (235) may be a component of the display panel (234). When the polarizing layer (235) and the display panel (234) are formed integrally, an adhesive member therebetween may be omitted.
- the polarizing layer (235) is manufactured separately and attached to the display panel (234), it can be attached using an adhesive material.
- the transparent member (233) may be placed on the upper side of the display panel (234).
- the transparent member (233) may be attached so as to be in direct contact with the display panel (234) by an attachment member.
- this is not limited thereto, and various types of layers, such as a polarizing layer (235) or a touch-sensitive layer (not shown), may be provided between the transparent member (233) and the display panel (234).
- the transparent member (233) may have a surface chemically strengthened to supplement rigidity. A detailed description of the transparent member (233) will be described later.
- a protective member (232) (e.g., a protective film) may be disposed on the uppermost layer of the flexible display (230).
- the protective member (232) may be disposed on the upper side of the transparent member (233) to protect the transparent member (233) from external impact.
- the protective member (232) may protect the transparent member (233) from external impact and may help prevent glass fragments from flying when the transparent member (233) is broken.
- the protective member (232) and the transparent member (233) can be bonded by a first adhesive member (P1). As the protective member (232) and the transparent member (233) are bonded to each other, a first adhesive member (P1) can be placed between the protective member (232) and the transparent member (233).
- the protective member (232) can be detachably attached to the transparent member (233). If the protective member (232) is damaged by an external impact, a new protective member (232) can be attached on the transparent member (233). Therefore, the adhesive strength of the first adhesive member (P1) can be weaker than the adhesive strength of the second adhesive member (P2).
- the protective member (232) may include, but is not limited to, polyethylene terephthalate (PET) or polyimide (PI), and may include a material used for the transparent member (233) or the polymer member (236) described below.
- the thickness of the protective member (232) may be substantially the same as or relatively thinner than the thickness of the transparent member (233).
- the protective member (232) may be omitted from the configuration of the flexible display (230). When the protective member (232) is omitted, the first adhesive member (P1) may also be omitted.
- the flexible display (230) may include a polymer member (236) disposed below the display panel (234).
- the polymer member (236) may, for example, be applied with a dark color to help display the background when the display is off.
- the polymer member (236) may, for example, act as a buffer member to absorb impact from the outside of the electronic device to prevent or reduce damage to the flexible display (230).
- the polymer member (236) may include a plastic film as a base layer.
- the polymer member may include a plastic film including any one selected from the group consisting of polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or a combination thereof.
- a metal sheet layer may be arranged on the lower side of the display panel (234).
- the metal sheet layer may help reinforce the rigidity of the electronic device.
- the metal sheet layer may be used, for example, to shield ambient noise and disperse heat emitted from surrounding heat-dissipating components.
- the metal sheet layer may include at least one of STS, Cu, Al, or other alloy materials.
- FIG. 5 is a flowchart for explaining a manufacturing process of a transparent member included in the flexible display of FIG. 4a.
- a transparent member according to one embodiment can be manufactured through a process of cutting a base glass (S10), a process of first chemically strengthening the cut glass (S20), a process of masking a portion of the first chemically strengthened glass and then shape-etching it (S30), a process of removing the masking after etching (S40), a process of second chemically strengthening the surface of the glass from which the masking has been removed (S50), or a process of cleaning to remove foreign substances on the surface (S60).
- a process of cutting the base glass to the size of a flexible display may be performed.
- a process of cutting the base glass to a certain size may be performed.
- a process of first chemical strengthening the surface of the cut glass may be performed.
- the first chemical strengthening process may be performed for a first time period.
- the depth of strengthening by the first chemical strengthening may vary depending on the length of the first time period. The longer the first time period, the more areas may be chemically strengthened through the first chemical strengthening process.
- the ion substitution method can refer to a method of exchanging small-sized ions existing inside the glass with relatively large-sized ions.
- the Li+ ions inside the glass are first replaced with Na+ ions, and then the Na+ ions are replaced with K+ ions in a two-step substitution process, which generates internal stress and can strengthen the strength of the glass.
- the ion substitution method is not limited to the above method, and may be carried out in various ways to replace ions inside the glass (especially, on the surface of the glass) with relatively large ions.
- a KNO3 (Potassium Nitrate) solution may be used for chemical strengthening of the glass, but is not limited thereto.
- a KOH (Potassium Hydroxide) solution may be used for chemical strengthening.
- chemical strengthening may be performed by immersing the glass in a chemical solution containing KNO3.
- Chemical strengthening can be performed, for example, in a temperature environment of 300 degrees Celsius to 400 degrees Celsius, but is not limited thereto, and may vary depending on the material of the glass used. Chemical strengthening can be performed sequentially from the surface layer of the glass. The depth of chemical strengthening in which chemical strengthening is performed can be proportional to the temperature and strengthening time. In the S20 process, the depth of chemical strengthening of the glass can be controlled by controlling the temperature and strengthening time.
- a process of masking a portion of the surface of the glass on which the first chemical strengthening is performed and then performing shape etching may be performed.
- a masking member may be adhered to a portion that is not to be etched.
- a masking operation may be performed on a portion corresponding to a first region (e.g., the first region (230a) of FIG. 4A) or a non-flexible region of the flexible display (230).
- shape etching may be performed. A portion of the glass that is not masked may be thinned due to the shape etching.
- the portion whose thickness is thinned may be a portion corresponding to a second region (e.g., the second region (230b) of FIG. 4A) of the flexible display (230).
- the etching may be performed, for example, by a laser irradiation method, but is not limited thereto.
- not only the upper surface but also the lower surface of the unmasked portion of the glass can be etched. Accordingly, notches or recesses can be formed on the upper and lower surfaces of the glass. By forming notches or recesses on the upper and lower sides of the glass, stress can be evenly distributed. If stress is evenly distributed, the glass can be prevented from being distorted by the stress.
- the masking member attached to the glass surface can be removed after the shape etching process is completed. If a separate jig-like configuration other than the masking member is used, the process of removing the masking member can be omitted.
- a process of second chemical strengthening the surface of the glass from which the masking has been removed may be performed.
- a chemical strengthening region that was first chemically strengthened in the S20 process may be removed by etching.
- Second chemical strengthening may be performed on the portion from which the chemical strengthening region has been removed.
- the second chemical strengthening may be performed in substantially the same manner as the first chemical strengthening, for example, and therefore a detailed description thereof will be omitted.
- the second chemical strengthening process may be performed for a second time period that is relatively shorter than the first time period.
- Secondary chemical strengthening can be performed on all surfaces, not just the etched portions of the glass. However, for the portions where the strengthened areas remain due to the primary chemical strengthening, there may not be a significant difference in the depth of chemical strengthening before and after the S50 process because there are not many ions left to be replaced. For the portions where the chemical strengthened areas are removed by etching, a new chemical strengthened area can be formed by secondary chemical strengthening.
- the chemical strengthening depth formed through the first chemical strengthening and the chemical strengthening depth formed through the second chemical strengthening may be different.
- the chemical strengthening depth formed through the first chemical strengthening may be greater than the chemical strengthening depth formed through the second chemical strengthening.
- the surface strength of a portion corresponding to a non-flexible area of a flexible display (230) can be strengthened
- the surface strength of a portion corresponding to a flexible area of a flexible display (230) can be strengthened.
- a process of cleaning glass that has undergone secondary chemical strengthening may be performed.
- a process of rinsing substances remaining on the surface of a transparent member may be performed.
- a healing process for surface treatment of the transparent member may be performed.
- the surface of the transparent member may be dissolved or etched by a healing liquid.
- FIGS. 6A to 6E are cross-sectional views illustrating a manufacturing process of a transparent member according to one embodiment.
- FIGS. 6A to 6E are cross-sectional views illustrating characteristic parts of a transparent member (300) according to one embodiment.
- the transparent member (300) manufactured through the processes of FIGS. 6A to 6E may be placed on a display panel of a flexible display of FIG. 4A (e.g., the flexible display (230) of FIG. 4A).
- the display panel may include a flexible region (e.g., the second region (230b)) and a non-flexible region (e.g., the first region (230a)) adjacent to the flexible region, like the flexible display (230).
- Fig. 6a may correspond to the S10 process of Fig. 5.
- a base layer (301) having an overall constant thickness is formed.
- Fig. 6b may correspond to the S20 process of Fig. 5.
- the first chemical strengthening may be performed on the surface of the base layer (301) having an overall constant thickness.
- chemical strengthening may be performed on not only the upper surface (300a) and the lower surface (300b) of the base layer (301), but also on the side connecting the upper surface (300a) and the lower surface (300b).
- a relatively large ion (E1) may be substituted with a relatively small ion (E2) in the base layer (301).
- the relatively large ion may be a K+ ion
- the relatively small ion may be a Na+ ion, but is not limited thereto.
- a first region (311) having a predetermined strengthening depth can be formed on all surfaces of the base layer (301).
- Fig. 6c may correspond to the S30 process of Fig. 5.
- a masking member (M) may be placed or attached on a portion of the surface of the base layer (301) or the first region (311). The portion on which the masking member (M) is placed or attached may not be etched.
- a masking member may be placed or attached to a portion corresponding to a first area (e.g., the first area (230a) of FIG. 4A) of a flexible display (e.g., the flexible display (230) of FIG. 4A) or a non-flexible area (hereinafter, the first glass portion (310)) of the surface of the base layer (301).
- a first area e.g., the first area (230a) of FIG. 4A
- a flexible display e.g., the flexible display (230) of FIG. 4A
- a non-flexible area hereinafter, the first glass portion (310)
- a masking member is not placed or attached to a second region (e.g., the second region (230b) of FIG. 4a) of the flexible display (230) on the surface of the base layer (301) or a portion corresponding to the flexible region (hereinafter, the second glass portion (320)), so that grooves (322a, 322b) can be formed by shape etching.
- the second glass portion (320) can have a first groove (322a) and a second groove (322b) formed on the upper and lower sides, respectively, by shape etching.
- the first groove (322a) can be a groove that is etched from the upper surface (300a), and the second groove (322b) can be a groove that is etched from the lower surface (300b).
- a groove may be formed by etching only on one of the upper or lower sides of the base layer (301).
- one of the first groove (322a) or the second groove (322b) may be omitted.
- the two first glass portions (310) arranged on both sides based on the second glass portion (320) can be physically separated.
- grooves (322a, 322b) on the upper and lower sides of the second glass portion (320)
- stress can be distributed to each of the two first glass portions (310). If either of the first groove (322a) and the second groove (322b) is omitted, the stress distribution may not be balanced, which may cause a distortion phenomenon. For example, if the second groove (322b) is omitted, the first glass portions (310) and the second glass portions (320) form the same plane on the lower surface of the transparent member (300), the stress may not be distributed evenly, which may cause distortion.
- Fig. 6d may correspond to the S40 process of Fig. 5. It may be a process for preparing secondary chemical strengthening by removing the masking member (M) after the shape etching is completed. If the masking member (M) is not used for the shape etching, the process of Fig. 6d may be omitted.
- FIG. 6e may correspond to the S50 process of FIG. 5.
- a second chemical strengthening process may be performed on the transparent member (300).
- the second chemical strengthening process may have different process temperatures and times, for example, compared to the first chemical process.
- the second chemical strengthening process may be performed on all parts of the transparent member (300).
- the first glass part (310) which is a non-etched part, still has a first region (311) formed by the first chemical process remaining, and since the first region (311) is a part where ion substitution has already occurred, a large difference in the depth of chemical strengthening may not occur due to the second chemical strengthening process.
- the surface of the second glass part (320), which is an etched part may be a surface that has not been chemically strengthened.
- the second region (321) may be formed on the surface of the second glass part (320) by ion substitution in the second chemical strengthening process.
- the degree to which the relatively thin second glass portion (320) is chemically strengthened can be determined by the second chemical strengthening process regardless of the degree to which the surface of the first glass portion (310) is chemically strengthened in the first chemical strengthening process.
- FIGS. 6A to 6E are exemplary for explaining a process for manufacturing a transparent member (300) according to one embodiment.
- Transparent members of various shapes can be manufactured using the process of FIG. 5. The various shapes are described in detail below.
- Fig. 7a is a cross-sectional view of a transparent member according to one embodiment.
- Fig. 7b is a cross-sectional view of a transparent member with resin added in Fig. 7a.
- the transparent member (300) of FIGS. 7A and 7B may be a cross-section of the transparent member (300) based on a cross-section cut along line V1-V1' of the flexible display of FIG. 4A (e.g., the flexible display (230) of FIG. 4A).
- the thickness of the transparent member (300) may be somewhat exaggerated in FIGS. 7A and 7B.
- the transparent member (300) illustrated in FIGS. 7a and 7b may be substantially identical to or similar to the transparent member of FIG. 4b (e.g., the transparent member (233) of FIG. 4b).
- the transparent member (300) may include a first glass portion (310) and a second glass portion (320).
- the first glass portion (310) may extend from one edge of the second glass portion (320).
- the second glass portion (320) may be positioned between, for example, two first glass portions (310).
- the first glass portion (310) may correspond to a non-flexible area of the flexible display (230) or the display panel (not shown).
- the first glass portion (310) may have a first thickness (T1).
- the first thickness (T1) may refer to a length between the upper surface (300a) and the lower surface (300b) of the transparent member (300) in the first glass portion (310).
- the first thickness (T1) may refer to a length in the Z1-axis direction of the first glass portion (310).
- the first thickness (T1) may be, for example, thicker than the second thickness (T3).
- the first thickness (T1) may be, for example, 50 micrometers to 500 micrometers, but is not limited thereto.
- the first glass portion (310) may include a first region (311).
- the first region (311) may have a first depth (T2).
- the first depth (T2) may refer to a depth of a chemically strengthened region from a surface of the first glass portion (310).
- the first depth (T2) may refer to an average depth measured based on the surface of the first glass portion (310).
- the first depth (T2) may be determined, for example, in the first chemical strengthening process (S20) of FIG. 5.
- the first depth (T2) may have a length of, for example, 5% to 20% of the first thickness (T1), but is not limited thereto.
- the second glass portion (320) may correspond to a flexible area of the flexible display (230) or the display panel (not shown).
- the second glass portion (320) may have a second thickness (T3).
- the second thickness (T3) may refer to a length between the upper surface (300a) and the lower surface (300b) of the transparent member (300) in the second glass portion (320).
- the second thickness (T3) may refer to a length in the Z1-axis direction of the second glass portion (320).
- the second thickness (T3) may be, for example, thinner than the first thickness (T1).
- the second thickness (T3) may be, for example, 30 micrometers to 60 micrometers, but is not limited thereto.
- the second glass portion (320) may include a second region (321).
- the second region (321) may have a second depth (T4) that is different from the first depth (T2).
- the second depth (T4) may refer to a depth of a chemically strengthened region from a surface of the second glass portion (320).
- the second depth (T4) may refer to an average depth measured based on the surface of the second glass portion (320).
- the second depth (T4) may be determined, for example, in the second chemical strengthening process (S50) of FIG. 5.
- the second depth (T4) may have a length of, for example, 5% to 20% of the second thickness (T3), but is not limited thereto.
- the second glass portion (320) may include grooves (322a, 322b) formed on the upper and lower sides.
- the grooves (322a, 322b) may include, for example, a first groove (322a) formed in the upper surface (300a) of the transparent member (300) of the second glass portion (320) and a second groove (322b) formed in the lower surface (300b) of the transparent member (300) of the second glass portion (320).
- the present invention by forming grooves (322a, 322b) on both upper and lower sides of the second glass portion (320), stress can be distributed to the first glass portion (310) located on both sides centered on the second glass portion (320).
- the present invention is not limited thereto, and one of the first groove (322a) and the second groove (322b) in the second glass portion (320) may be omitted. That is, only one of the first groove (322a) and the second groove (322b) may be formed by an etching process.
- the first groove (322a) may have a depth greater than the first depth (T2).
- the second groove (322b) may have a depth greater than the first depth (T2).
- the upper surface of the first glass portion (310) and the upper surface of the second glass portion (320) may be located on different planes.
- the upper surface of the second glass portion (320) may not be included in a plane including the upper surface of the first glass portion (310) due to the first groove (322a) formed on the upper side of the second glass portion (320).
- the upper surface of the second glass portion (320) may not be included in a plane including the upper surface of the first glass portion (310).
- the upper surface of the first glass portion (310) may be the upper surface (300a) of the transparent member (300).
- the state in which the transparent member (300) is unfolded may refer to a state in which no bent portion exists in any area of the transparent member (300).
- the lower surface of the first glass portion (310) and the lower surface of the second glass portion (320) may be located on different planes.
- the lower surface of the second glass portion (320) may not be included in the plane including the lower surface of the first glass portion (310) due to the second groove (322b) formed on the lower side of the second glass portion (320).
- the lower surface of the second glass portion (320) may not be included in the plane including the lower surface of the first glass portion (310).
- the lower surface of the first glass portion (310) may be the lower surface (300b) of the transparent member (300).
- the sizes of the first depth (T2) and the second depth (T4) may be different.
- the first depth (T2) may be larger than the second depth (T4).
- the ratio of the first depth (T2) to the first thickness (T1) may be substantially the same as the ratio of the second depth (T4) to the second thickness (T3).
- the first depth (T2) may be 7.5 micrometers and the second depth may be 4.5 micrometers.
- the ratio of the first depth (T2) to the first thickness (T1) in the first glass portion (310) and the ratio of the second depth (T4) to the second thickness (T3) in the second glass portion (320) can be substantially the same, the difference in expansion rates between the first glass portion (310) and the second glass portion (320) can be minimized.
- a distortion phenomenon that may occur in the transparent member (300) (particularly, the second glass portion (320)) can be prevented.
- the second glass portion (320) may be formed vertically symmetrically with respect to an imaginary plane (C) that is perpendicular to the thickness direction of the transparent member (300) and penetrates the transparent member.
- vertical symmetry may refer to the meaning that the second portion (320) is located in an area that is not affected by the first reinforcement depth (T2).
- the above-described virtual plane (C) may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (300) and divides the average thickness of the transparent member (300) in half, but is not limited thereto.
- the above-described virtual plane (C) may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (300) and divides the average thickness of the first glass portion (310) in half, but is not limited thereto.
- the thickness direction may refer to the Z1-axis direction.
- the thickness direction may refer to a direction from the lower surface (300b) of the transparent member (300) toward the upper surface (300a) of the transparent member (300).
- the boundary between the first glass portion (310) and the second glass portion (320) may be formed in a step manner, but is not limited thereto.
- the transparent member (300) may further include a refractive index matching portion.
- the refractive index matching portion may be arranged around at least one of the first glass portion (310) or the second glass portion (320) to match a refractive index of light formed by a difference in thickness between the first glass portion (310) and the second glass portion (320), for example.
- the refractive index matching portion may be made of, for example, a transparent material.
- the refractive index matching portion may be made of, for example, a urethane-based, acrylic-based, or silicone-based material.
- the refractive index matching portion may have a refractive index substantially equal to that of the base layer (301), for example.
- the transparent member (300) may further include a resin portion (340).
- the resin portion (340) may be disposed on the second glass portion (320) of the transparent member (300).
- the resin portion (340) may be disposed to fill a groove portion dug in the second glass portion (320).
- the resin portion (340) may include a first resin portion (340a) and a second resin portion (340b).
- the first resin portion (340a) may be filled in the first groove (322a).
- the second resin portion (340b) may be filled in the second groove (322b).
- the resin portion (340) may be filled in, for example, at least one of the first groove (322a) or the second groove (322b).
- the step between the upper surface (300a) and the lower surface (300b) of the transparent member (300) can be eliminated by filling at least one of the first groove (322a) or the second groove (322b) with the resin portion (340).
- the resin portion (340) illustrated in FIG. 7b may be a part of a first adhesive member (e.g., the first adhesive member (P1) of FIG. 4b) or a part of a second adhesive member (e.g., the second adhesive member (P2) of FIG. 4b) when the transparent member (300) is included in a flexible display (e.g., the flexible display (230) of FIG. 4b).
- the first resin portion (340a) may be a part of the first adhesive member (P1).
- the second resin portion (340b) may be a part of the second adhesive member (P2).
- FIGS. 8 to 14 describe transparent members according to various embodiments that can be manufactured using the manufacturing process of FIG. 5.
- Figure 8 is a cross-sectional view of a transparent member according to another embodiment.
- the transparent member (300-1) of FIG. 8 may be a cross-section of the transparent member (300-1) based on a cross-section cut along the line V1-V1' of the flexible display of FIG. 4A (e.g., the flexible display (230) of FIG. 4A).
- the thickness of the first glass portion (310), the first depth of the first region (311), the thickness of the second glass portion (320-1), and the second depth of the second region (321-1) are described in FIG. 7A, and are thus omitted.
- a detailed description of the components described in FIG. 7A among the components of FIG. 8 is omitted.
- the thickness of the transparent member (300-1) may be somewhat exaggerated in FIG. 8.
- a transparent member (300-1) has an overall configuration identical or similar to that of the transparent member (300) of FIG. 7a, but differs in that it further includes a third glass portion (330). The differences will be mainly described below.
- the third glass portion (330) may be disposed between the first glass portion (310) and the second glass portion (320-1).
- the third glass portion (330) may be disposed such that one side contacts the edge of the first glass portion (310) and the other side contacts the edge of the second glass portion (320-1).
- the third glass portion (330) may have an inclined shape.
- the third glass portion (330) may be formed, for example, to be inclined downward from the first glass portion (310) side to the second glass portion (320-1) side.
- the third glass portion (330) may be formed, for example, to be inclined so as to connect the first glass portion (310) and the second glass portion (320-1).
- the slope of the third glass portion (330) may be a flat slope, but is not limited thereto, and may also be a curved slope.
- the third glass portion (330) may be formed by the etching process (S30) of FIG. 5.
- an upper groove (322a-1) and a lower groove (322b-1) may be formed around the second glass portion (320-1) and the third glass portion (330).
- the chemical strengthening depth of the third glass portion (330) may be the same as or similar to the chemical strengthening depth of the second glass portion (320-1).
- the thickness of the base layer (301) can be gradually changed, thereby improving the visibility of the transparent member (300-1).
- Figure 9 is a cross-sectional view of a transparent member according to another embodiment.
- the transparent member (300-2) of FIG. 9 may be a cross-section of the transparent member (300-2) based on a cross-section cut along the line V1-V1' of the flexible display of FIG. 4A (e.g., the flexible display (230) of FIG. 4A).
- the thickness of the first glass portion (310), the first depth of the first region (311), the thickness of the second glass portion (320-2), and the second depth of the second region (321-2) are described in FIG. 7A, and are therefore omitted below.
- a detailed description of the components described in FIG. 7A among the components of FIG. 9 is omitted.
- the thickness of the transparent member (300-2) may be somewhat exaggerated in FIG. 9.
- a transparent member (300-2) according to one embodiment has an overall configuration identical or similar to that of the transparent member (300) of FIG. 7a, but has a difference in the shape of the second glass portion (320-2). The differences will be mainly described below.
- the second glass portion (320-2) of the transparent member (300-2) may have a pattern in which concave portions (324) and convex portions (323) are alternately arranged on one surface.
- the second glass portion (320-2) may have a pattern in which concave portions (324) and convex portions (323) are alternately arranged on at least one surface of the upper surface or the lower surface.
- the pattern shapes of the upper surface and the lower surface of the second glass portion (320-2) may be formed to be symmetrical from top to bottom.
- the boundary between the concave portion (324) and the convex portion (323) may be formed by a vertical step.
- the alternating pattern of the concave portion (324) and the convex portion (323) may have an overall square wave-shaped cross-section.
- the surface pattern of the second glass portion (320-2) can be formed by the etching process (S30) of Fig. 5.
- an upper groove (322a-2) and a lower groove (322b-2) can be formed around the second glass portion (320-2).
- bending performance and/or impact strength performance can be improved by alternately arranging concave portions (324) and convex portions (323) in the second glass portion (320-2).
- impact strength performance can be improved by the convex portion (323).
- bending performance can be improved by the concave portion (324).
- Fig. 10 is a cross-sectional view of a transparent member according to another embodiment.
- the transparent member (300-3) of FIG. 10 may be a cross-section of the transparent member (300-3) based on a cross-section cut along the line V1-V1' of the flexible display of FIG. 4A (e.g., the flexible display (230) of FIG. 4A).
- the thickness of the first glass portion (310), the first depth of the first region (311), the thickness of the second glass portion (320-3), and the second depth of the second region (321-3) are described in FIG. 7A, and are therefore omitted below.
- a detailed description of the components described in FIG. 7A among the components of FIG. 10 is omitted.
- the thickness of the transparent member (300-3) may be somewhat exaggerated in FIG. 10.
- a transparent member (300-3) according to one embodiment has an overall configuration identical or similar to that of the transparent member (300) of FIG. 7a, but has a difference in the shape of the second glass portion (320-3). The differences will be mainly described below.
- the second glass portion (320-3) of the transparent member (300-3) may have a pattern in which concave portions (326) and convex portions (325) are alternately arranged on one surface.
- the second glass portion (320-3) may have a pattern in which concave portions (326) and convex portions (325) are alternately arranged on at least one surface of the upper surface or the lower surface.
- the pattern shapes of the upper surface and the lower surface of the second glass portion (320-3) may be formed to be symmetrical from top to bottom.
- the alternating pattern of concave portions (326) and convex portions (325) may have a wave-shaped cross-section.
- the alternating pattern of concave portions (326) and convex portions (325) may have a curved shape overall.
- the surface pattern of the second glass portion (320-3) can be formed by the etching process (S30) of Fig. 5.
- an upper groove (322a-3) and a lower groove (322b-3) can be formed around the second glass portion (320-3).
- the bending performance and/or the impact strength performance can be improved.
- the impact strength performance can be improved by the convex portion (325).
- the bending performance can be improved by the concave portion (326).
- FIGS. 11a and 11b are drawings of a transparent member according to another embodiment.
- FIG. 11a is a plan view of a transparent member (300-4) according to one embodiment as viewed from above.
- FIG. 11b is a cross-sectional view of a transparent member (300-4) according to one embodiment as taken along line V2-V2'.
- FIGS. 11a and 11b the thickness of the first glass portion (310), the first depth of the first region (311), the thickness of the second glass portion (320-4), and the second depth of the second region (321-4) are described in FIG. 7a and are thus omitted. A detailed description of the configurations described in FIG. 7a among the configurations of FIGS. 11a and 11b is omitted.
- a transparent member (300-4) according to one embodiment has an overall configuration identical or similar to that of the transparent member (300) of FIG. 7A, but differs in the shape of the second glass portion (320-4). The differences will be mainly described below.
- the second glass portion (320-4) of the transparent member (300-4) may be formed with a portion thereof penetrating.
- the second glass portion (320-4) may be formed to be symmetrical about the folding axis (F), but is not limited thereto.
- the second glass portion (320-4) may include a through hole (327).
- the through hole (327) may be formed to be symmetrical about the folding axis (F), but is not limited thereto.
- the through hole (327) may be formed to extend in a direction parallel to the folding axis (F).
- a plurality of through holes (327) may be arranged at a predetermined interval along a direction perpendicular to the folding axis (F).
- the second glass portion (320-4) may include a second region (321-4).
- the second region (321-4) may be formed on the upper surface and lower surface of the second glass portion (320-4) as well as the periphery of the through hole (327).
- the through-hole (327) pattern of the second glass portion (320-4) can be formed by the etching process (S30) of Fig. 5.
- the etching process (S30) not only the through-hole (327) but also an upper groove (322a-4) and a lower groove (322b-4) can be formed around the second glass portion (320-4).
- the bending performance of the transparent member (300-4) can be improved by forming a through hole in the second glass portion (320-4).
- Figure 11c is a cross-sectional view of a transparent member according to another embodiment.
- Fig. 11c the thickness of the first glass portion (310), the first depth of the first region (311), the thickness of the second glass portion (320-4'), and the second depth of the second region (321-4') are described in Fig. 7a, and are omitted below. A detailed description of the configurations described in Fig. 7a among the configurations of Fig. 11c is omitted.
- the transparent member (300-4') illustrated in FIG. 11c may have a shape identical to or similar to the plan view shape of the transparent member (300-4) illustrated in FIG. 11a.
- the transparent member (300-4') illustrated in FIG. 11c is similar to the transparent member (300-4) described in FIGS. 11a and 11b in that a plurality of through holes (327') are formed in the second glass portion (320-4').
- the description of the shape or pattern of the through holes (327') of FIG. 11c is replaced with the description of the through holes (327) described in FIGS. 11a and 11b. Referring to FIG.
- the thickness of the second glass portion (320-4') of the transparent member (300-4') may be substantially the same as the thickness of the first glass portion (310).
- the second glass portion (320-4') can improve bending performance by forming a number of through holes (327') while maintaining the same thickness as the first glass portion (310).
- the upper surface and the lower surface of the second glass portion (320-4') of the transparent member (300-4') may be formed as a first region (311).
- the upper surface of the second glass portion (320-4') may be a surface corresponding to the upper surface (300a) of the transparent member (300-4').
- the lower surface of the second glass portion (320-4') may be a surface corresponding to the lower surface (300b) of the transparent member (300-4').
- etching to form a groove is not performed on the upper surface and the lower surface of the second glass portion (320-4'), and therefore, the first chemically strengthened region (311) formed by the first chemical strengthening (S20) may remain on the upper surface and the lower surface of the second glass portion (320-4').
- the vertical surface of the second glass portion (320-4') of the transparent member (300-4') may be formed as a second region (321-4').
- the vertical surface of the second glass portion (320-4') may refer to a surface that comes into contact with the through hole (327').
- a second region (321-4') thinner than the first region (311) may be formed on the vertical surface of the second glass portion (320-4'). Accordingly, even if the width is reduced due to a plurality of through holes (327'), the strength of the transparent member (300-4') may be improved by forming a thin second region (321-4') corresponding to it using the manufacturing process of FIG. 5.
- Fig. 12 is a cross-sectional view of a transparent member according to another embodiment.
- the thickness of the transparent member (300-5) may be somewhat exaggerated in FIG. 12.
- the transparent member (300-5) may include a first transparent member (300a-5) and a second transparent member (300b-5).
- the first transparent member (300a-5) may correspond to, for example, almost all areas of a flexible display (e.g., the flexible display (230) of FIG. 4a).
- the second transparent member (300b-5) may correspond to, for example, at least a portion of a first area of the flexible display (230) (e.g., the first area (230a) of FIG. 4a).
- the transparent member (300-5) may have a two-layer laminated structure in which the second transparent member (300b-5) is partially laminated on the first transparent member (300a-5).
- the refractive indices of the first transparent member (300a-5) and the second transparent member (300b-5) may be substantially the same, but are not limited thereto.
- the transparent member (300-5) may include a first glass portion (310-5) corresponding to a non-flexible area of the flexible display (230), a second glass portion (320-5) corresponding to a part of the flexible area of the flexible display (230), and a third glass portion (330-5) connecting the first glass portion (310-5) and the second glass portion (320-5).
- the third glass portion (330-5) may, for example, be located at least partially near an edge of the second area of the flexible display (e.g., the second area (230b) of FIG. 4A).
- the first transparent member (300a-5) may include a first region (301a-5) near its surface.
- the first region (301a-5) may have, for example, substantially the same reinforcement depth across the entire surface of the first transparent member (300a-5).
- the second transparent member (300b-5) may include a second region (301b-5) formed in a portion corresponding to the first glass portion (310-5) and a third reinforced region (302b-5) corresponding to the third glass portion (330-5).
- the reinforcement depth of the second region (301b-5) may be substantially the same as the reinforcement depth of the first region (301a-5), for example, but is not limited thereto.
- the reinforcement depth of the third reinforced region (302b-5) may be smaller than the reinforcement depth of the second region (301b-5).
- the shape of a portion corresponding to the third glass portion (330-5) of the second transparent member (300b-5) can be formed by the etching process (S30) of Fig. 5.
- the third reinforced region (302b-5) formed in the third glass portion (330-5) of the second transparent member (300b-5) can be formed by the second chemical strengthening process (S50) of Fig. 5.
- the visibility of the boundary between the first glass portion (310-5) and the second glass portion (320-5) can be improved.
- FIG. 13 is a plan view of a flexible display that can be folded multiple times according to another embodiment.
- the flexible display (230-1) may have a plurality of folding axes (F1, F2).
- the folding axes (F1, F2) may include a first folding axis (F1) and a second folding axis (F2) that are positioned spaced apart from each other.
- the first folding axis (F1) and the second folding axis (F2) may be, for example, parallel to each other, but are not limited thereto.
- the flexible display (230-1) may include a plurality of first regions (230a-1) and a plurality of second regions (230b-1).
- the plurality of second regions (230b-1) may be formed, for example, centered around the first folding axis (F1) and the second folding axis (F2), respectively.
- the plurality of first regions (230a-1) may be formed, for example, by extending from the second region (230b-1).
- the first region (230a-1) may refer to a planar region or a non-flexible region that maintains a plane even when the flexible display (230-1) is folded around the folding axes (F1, F2).
- the second region (230b-1) may refer to a bending region or flexible region that is bent when the flexible display (230-1) is folded around the folding axis (F1, F2).
- the flexible display (230-1) may include a display panel and a transparent member (e.g., the transparent member (300-6) of FIG. 14).
- the display panel may include a flexible region (e.g., the second region (230b-1)) and a non-flexible region (e.g., the first region (230a-1)) adjacent to the flexible region, similar to the flexible display (230-1).
- the display panel may be arranged to display an image.
- the display panel may be, for example, an emissive display panel, but is not limited thereto.
- the display panel may be, for example, an organic light-emitting display panel or a quantum dot light-emitting display panel.
- An emissive layer of an organic light-emitting display panel may include an organic light-emitting material.
- An emissive layer of a quantum dot light-emitting display panel may include quantum dots and quantum rods.
- the display panel may be flexible.
- the transparent member (300-6) (window) may be arranged, for example, on a display panel. Other components (e.g., an input detection unit) may be arranged on the transparent member (300-6) and the display panel.
- the transparent member (300-6) may include an optically transparent insulating material. Accordingly, an image generated on the display panel may be easily transmitted to a user by penetrating the transparent member (300-6).
- the transparent member (300-6) can prevent the display panel from being damaged or malfunctioning due to external impact by allowing an image from the display panel to pass through and at the same time cushioning external impact.
- the external impact refers to an external force such as pressure or stress, which can refer to a force that causes damage to the display panel.
- FIG. 14 is a cross-sectional view of a transparent member included in the flexible display of FIG. 13.
- the transparent member (300-6) of FIG. 14 may be a cross-section of the transparent member (300-6) based on a cross-section cut along the line V3-V3' of the flexible display of FIG. 13 (e.g., the flexible display (230-1) of FIG. 13).
- the thickness of the first glass portion (310-6), the first depth of the first region (311-6), the thickness of the second glass portion (320-6), and the second depth of the second region (321-6) are described in FIG. 7A, and are therefore omitted below.
- a detailed description of the components described in FIG. 7A among the components of FIG. 14 is omitted.
- the thickness of the transparent member (300-6) may be somewhat exaggerated in FIG. 14.
- the transparent member (300-6) may include a plurality of first glass portions (310-6) and a plurality of second glass portions (320-6).
- the first glass portions (310-6) may extend from one edge of the second glass portions (320-6).
- One second glass portion (320-6) may be positioned, for example, between two adjacent first glass portions (310-6).
- the first glass portion (310-6) may correspond to a non-flexible area of the flexible display (230-1) or the display panel (not shown).
- the second glass portion (320-6) may correspond to a flexible area of the flexible display (230-1) or the display panel.
- the second glass portion (320-6) may include an upper groove (322a-6) and a lower groove (322b-6).
- the upper groove (322a-6) and the lower groove (322b-6) internal stress may be evenly distributed to the two first glass portions (310-6) located on both sides of the second glass portion (320-6).
- the second glass portion (320-6) may be formed to have, for example, an upper-lower symmetry for balanced stress distribution.
- FIGS. 13 and 14 describe a flexible display (230-1) and a transparent member (300-6) that are folded twice, these are exemplary, and a flexible display and a transparent member that are folded three or more times can also be implemented as described above.
- FIGS. 15A and 15B are front and back views of an electronic device in a closed state according to one embodiment.
- FIGS. 16A and 16B are front and back views of an electronic device in an open state according to one embodiment.
- the electronic device (400) in FIGS. 15A and 15B or 16A and 16B may be at least partially similar to the electronic device (101) of FIG. 1, or may further include other embodiments of the electronic device (101).
- an electronic device (400) may include a first housing (410) (e.g., a first housing structure or a base housing) or a second housing (420) (e.g., a second housing structure or a slide housing).
- the electronic device (400) may include a flexible display (430) (e.g., an expandable display, a stretchable display, a rollable display, or a display assembly) (e.g., a display module (160) of FIG. 1) that is fastened to be able to slide or roll.
- the electronic device (400) may have a structure in which at least two housings are stacked front and rear and are able to slide in a designated direction (e.g., left-right or up-down).
- the flexible display (430) may have a variable display area, for example, as one housing slides along the other housing in a designated direction (e.g., left-right or up-down).
- the second housing (420) may be coupled to the first housing (410) so as to be movable, for example, in a specified direction (e.g., in the X2-axis direction (right direction)) and within a specified distance from the first housing (410).
- the flexible display (430) may be placed on the front side of the electronic device (400) so as to be supported by at least a portion of the first housing (410) and the second housing (420).
- the electronic device (400) can transition from an open state (an open state, a stretched state, an unbended state, or a first state) to a closed state (a close state, a bended state, or a second state) as at least a portion of the second housing (420) is accommodated in the first receiving portion (4101) of the first housing (410).
- the first receiving portion (4101) may refer to a space formed inside the first housing (410).
- the electronic device (400) can transition from a closed state to an open state as at least a portion of the second housing (420) accommodated in the first receiving portion (4101) is withdrawn from the first receiving portion (4101).
- the open state may refer to, for example, a state in which the second area (430b) of the flexible display (430) is maximized
- the closed state may refer to, for example, a state in which the second area (430b) of the flexible display (430) is minimized.
- the open state may refer to a state in which the second housing (420) is maximizedly slid out (e.g., roll-out or draw-out) from the first housing (410)
- the closed state may refer to a state in which the second housing (420) is maximizedly slid in (e.g., roll-in or draw-in) to the first housing (410).
- the electronic device (400) can cause the second housing (420) to slide along a specified direction (e.g., X2-axis direction (2 direction) or -X2-axis direction (1 direction)) from the first housing (410) to cause the display area of the flexible display (430) to vary.
- a specified direction e.g., X2-axis direction (2 direction) or -X2-axis direction (1 direction)
- the flexible display (430) can have a variable display area depending on a drawing-in motion (e.g., moving in the X2-axis direction (2 direction)) or a withdrawal motion (e.g., moving in the -X2-axis direction (1 direction)).
- the flexible display (430) can be drawn in or drawn out, for example, by an external force (e.g., a user's manipulation) or an internal force (e.g., a separate driving module provided internally).
- the drawing-in motion may be a series of motions that reduce the size of the display area by the flexible display (430).
- the withdrawal motion may be a series of motions that expand the size of the display area by the flexible display (430).
- a state in which the display area of the flexible display (430) is maximized by a drawing-in motion is referred to as an open state
- a state in which the display area of the flexible display (430) is minimized by a drawing-in motion is referred to as a closed state.
- the state of the flexible display (430) before the introduction or withdrawal operation begins is referred to as the first state or initial state
- the state of the flexible display (430) after the introduction or withdrawal operation is completed is referred to as the second state or transition state.
- the flexible display (430) may be arranged such that at least a portion of a first region (430a) is not accommodated in the first receiving portion (4101) of the first housing (410) or the second receiving portion (4201) of the second housing (420).
- the first region (430a) may refer to a flat region that is arranged to be always visible from the outside regardless of whether the flexible display (430) is inserted or pulled out.
- the first region (430a) may be used, for example, to display an image according to the operation of the electronic device (400) on the front side.
- the first region (430a) of the flexible display (430) may be arranged to be visible from the outside (e.g., the front side).
- the flexible display (430) may have a second area (430b) corresponding to at least a portion thereof accommodated in the first receiving portion (4101) of the first housing (410) or the second receiving portion (4201) of the second housing (420).
- the second area (430b) may be an area whose area visible from the outside varies depending on the inlet or outlet of the flexible display (430).
- the second area (430b) may be, for example, deactivated so that the electronic device (400) cannot be used to display an image according to the operation, or may be activated so that the electronic device (400) can be used to display an image according to the operation on the rear surface.
- the second region (430b) of the flexible display (430) accommodated in the above-described receiving portion may be arranged so as not to be visible from the outside, or so as to be visible only from the back side, not the front side.
- the second region (430b) may be expanded by a withdrawal operation, or reduced by a retraction operation.
- the second region (430b) may be activated so as to be used to display an image according to the operation of the electronic device (400) only for a portion where at least a portion is withdrawn and visible from the outside.
- the electronic device (400) may include a front surface (400a) (e.g., a first surface), a rear surface (400b) (e.g., a second surface) facing in an opposite direction to the front surface (400a), and a side surface (not shown) surrounding a space between the front surface (400a) and the rear surface (400b).
- the side surface may be at least one of an upper surface, a lower surface, a left surface, or a right surface with respect to the front surface (400a).
- the first side surface member (411) and the second side surface member (421) may have surfaces corresponding to one or both of the four surfaces of the first housing (410) and the second housing (420).
- a case of three surfaces will be described as an example.
- the electronic device (400) may include a first housing (410) and a second housing (420).
- the first housing (410) may include a first side member (411).
- the second housing (420) may include a second side member (421).
- the first side member (411) may, for example, form a border corresponding to at least three of the four sides of the first housing (410) (e.g., an upper side, a lower side, and a right side based on the front).
- the second side member (421) may, for example, form a border corresponding to at least three of the four sides of the second housing (420) (e.g., an upper side, a lower side, and a left side based on the front).
- the first side member (411) may include at least one of a first side (4111) (e.g., a lower side of the first housing (410)), a second side (4112) (e.g., a right side of the first housing (410)), or a third side (4113) (e.g., an upper side of the first housing (410)) based on the front surface.
- the first side (4111) may have a first length along a first direction (e.g., an X2-axis direction).
- the second side (4112) may extend from the first side (4111) to have a second length longer than the first length along a direction substantially perpendicular to the Y2-axis direction.
- the third side (4113) may extend from the second side (4112) substantially parallel to the first side (4111) and have the first length.
- the first side member (411) may be formed, for example, at least partially, of a conductive material (e.g., metal).
- the first side member (411) may include, for example, a first support member (412) that extends to at least a portion of the first receiving portion (4101) of the first housing (410).
- the second side member (421) may include at least one of a fourth side member (4211) (e.g., a lower side of the second housing (420)), a fifth side member (4212) (e.g., a left side of the second housing (420)), or a sixth side member (4213) (e.g., an upper side of the second housing (420)) with respect to the front side.
- the fourth side member (4211) may at least partially correspond to the first side member (4111) and may have a third length.
- the fifth side member (4212) may extend from the fourth side member (4211) in a direction substantially parallel to the second side member (4112) and may have a fourth length longer than the third length.
- the sixth side member (4213) may extend from the fifth side member (4212) to correspond to the third side member (4113) and may have the third length.
- the second side member (421) may be formed, for example, at least partially, of a conductive material (e.g., metal).
- the second side member (421) may include, for example, a second support member (422) that extends to at least a portion of the second receiving portion (4201) of the second housing (420).
- the first side (4111) and the fourth side (4211) or the third side (4113) and the sixth side (4213) can be slidably coupled to each other.
- part or all of the fourth side (4211) can be arranged so as to be substantially invisible from the outside by overlapping the first side (4111).
- part or all of the sixth side (4213) can be arranged so as to be substantially invisible from the outside by overlapping the third side (4113).
- the fourth side (4211) or the sixth side (4213) can be arranged so as to be at least partially visible from the outside by overlapping the third side (4113) in the closed state.
- the second support member (422) included in the second side member (421) can be arranged so as to be substantially invisible from the outside by overlapping the first support member (412) included in the first side member (411).
- a part of the second support member (422) can be arranged so as to be invisible from the outside by overlapping the first support member (412), and the remaining part of the second support member (422) can be arranged so as to be visible from the outside by not overlapping the first support member (412).
- the electronic device may include a rear cover (413).
- the rear cover (413) may be disposed on at least a portion of the first housing (410) at the rear surface (400b) of the electronic device.
- the rear cover (413) may be disposed, for example, through at least a portion of the first support member (412).
- the rear cover (413) may be formed integrally with, for example, the first side member (411).
- the rear cover (413) may be formed of, for example, a polymer, a coated or colored glass, a ceramic, a metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials.
- the rear cover (413) may extend to at least a portion of the first side member (411), for example.
- the electronic device (400) may further include another rear cover (e.g., a second rear cover) disposed on at least a portion of the second support member (422) in the second housing (420), or replacing at least a portion of the second support member (422).
- another rear cover e.g., a second rear cover
- the electronic device (400) may include a flexible display (430) positioned to be supported by at least a portion of the first housing (410) or the second housing (420).
- the flexible display (430) may include a first region (430a) (e.g., a flat portion) and/or a second region (430b) (e.g., a curved portion, a bendable portion, or a rollable portion).
- the first region (430a) may be a region that is always visible from the outside among the entire region of the flexible display (430).
- the second region (430b) that can be extended from the first region (430a) can be an region that is received into the first receiving portion (4101) of the first housing (410) or the second receiving portion (4201) of the second housing (420) when introduced and is not visible from the outside, and is withdrawn from the first receiving portion (4101) or the second receiving portion (4201) when withdrawn and is visible from the outside.
- the first region (430a) can be arranged to be supported by the first housing (210).
- the active area defined above can be activated so that an image is displayed in the area drawn from the first receiving portion (4101) or the second receiving portion (4201) among the first area (430a) or the second area (430b), and can be deactivated so that an image is not displayed in the area received by the first receiving portion (4101) or the second receiving portion (4201) among the second area (430b).
- the second region (430b) of the flexible display (430) can be extended from the first region (430a) in a state where the second housing (420) is pulled out along a designated direction (direction 1). To this end, the second region (430b) can be arranged to form substantially the same plane as the first region (430a) and be visible from the outside.
- the second region (430b) of the flexible display (430) may be accommodated in the second receiving portion (4201) of the second housing (420) when the second housing (420) is introduced along a designated direction (2 direction) and may be arranged so as not to be visible from the outside or to be visible from the back but not visible from the front.
- the first housing (410) and/or the second housing (420) may be slidably operated relative to each other so that their overall widths are variable.
- the electronic device (400) may be configured to have a first width (W1) from the second side (4112) to the fifth side (4212) in a closed state.
- the electronic device (400) may be configured to have a third width (W3) that is larger than the first width (W1) overall by being moved to have a second width (W2) in an open state.
- the flexible display (430) included in the electronic device (400) may have a display area substantially corresponding to the first width (W1) in a closed state, and may have an extended display area substantially corresponding to the third width (W3) in an open state.
- the insertion and/or withdrawal operation of the electronic device (400) may be performed automatically.
- the electronic device (400) may, for example, receive a request for an insertion or withdrawal operation and operate a driving module disposed therein.
- the request for the insertion or withdrawal operation may be made through a touch operation of a designated operation button disposed in the electronic device (400) and/or a corresponding object displayed on the flexible display (430).
- the processor of the electronic device (400) e.g., the processor (120) of FIG. 1
- the processor of the electronic device (400) (e.g., the processor (120) of FIG.
- the flexible display (430) may operate to control the display screen of the flexible display (430) to display objects in various ways or to execute applications in response to the changed display area of the flexible display (430), for example, depending on a closed state, an open state, or an intermediate state (e.g., including a free stop state).
- the electronic device (400) may include at least one of an input module (e.g., a microphone (403)), an audio output module (e.g., a call receiver (406) or a speaker (407)), a sensor module (404, 417), a camera module (e.g., a first camera module (405) or a second camera module (416)), a connector port (408), a key input device (not shown), or an indicator (not shown) disposed in a first receiving portion (4101) of a first housing (410).
- the electronic device (400) may be configured such that at least one of the above-described components is omitted, or other components are additionally included. At least one of the above-described components may be disposed in a second receiving portion (4201) of a second housing (420).
- the input module may include a plurality of microphones arranged to detect the direction of sound.
- the audio output module may include, for example, a call receiver (406) and a speaker (407).
- the speaker (407) may be arranged to face the outside through at least one speaker hole formed in the first housing (410) in an open state.
- the connector port (408) may be arranged to face the outside through a connector port hole formed in the first housing (410) in an open state.
- the call receiver (406) may also include a speaker (e.g., a piezo speaker) that operates without a separate speaker hole.
- the sensor module (404, 417) can generate an electric signal or data value corresponding to an internal operating state of the electronic device (400) or an external environmental state.
- the sensor module (404, 417) can include a first sensor module (404) (e.g., a proximity sensor or a light sensor) disposed on the front (400a) of the electronic device (400) and/or a second sensor module (417) (e.g., a heart rate monitoring (HRM) sensor) disposed on the rear (400b).
- the first sensor module (404) can be disposed, for example, under a flexible display (430) on the front (400a) of the electronic device (400).
- the first sensor module (404) and/or the second sensor module (417) may include at least one of a proximity sensor, an illuminance sensor, a time of flight (TOF) sensor, an ultrasonic sensor, a fingerprint recognition sensor, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, or a humidity sensor.
- the camera module may include a first camera module (405) disposed on the front (400a) of the electronic device (400) and a second camera module (416) disposed on the rear (400b).
- the first and/or second camera modules (405, 416) may include one or more lenses, an image sensor, and/or an image signal processor.
- the first camera module (405) may be disposed under the flexible display (430) and configured to capture a subject through a portion of an active area of the flexible display (430).
- a flash (418) may be positioned on the second camera module (416).
- the flash (418) may include, for example, a light-emitting diode or a xenon lamp.
- the first camera module (405) or some of the sensor modules (404, 417) may be arranged to detect an external environment through the flexible display (430).
- the first camera module (405) or some of the sensor modules (404) may be arranged in the first receiving portion (4101) of the first housing (410) so as to be in contact with the external environment through a transparent region or a perforated opening formed in the flexible display (430).
- An area of the flexible display (430) facing the first camera module (405) may be formed as a transparent region having a specified transmittance as a part of an area displaying content.
- the transparent region may be formed to have a transmittance in a range of, for example, about 5% to about 20%.
- the transparent area may include an area overlapping with an effective area (e.g., a field of view area) of the first camera module (405) through which light passes to be imaged by the image sensor and obtain an image.
- the transparent area of the flexible display (430) may include an area having a lower pixel density and/or wiring density than the surrounding area.
- the transparent area may replace the opening described above.
- the camera module (405) may include an under display camera (UDC).
- the sensor module (404) may also be arranged to perform its function without being visually exposed through the flexible display (430) in the internal space of the electronic device (400).
- FIGS. 17A and 17B are perspective views of a flexible display according to one embodiment.
- the flexible display (430) may include a first region (430a) and a second region (430b) extending from the first region (430a).
- the first region (430a) may refer to a planar region or a non-flexible region that maintains a plane even when the electronic device (e.g., the electronic device (400) of FIG. 15A) is slid between a closed state and an open state.
- the second region (430b) may refer to a bending region or a flexible region that bends when the electronic device (400) is slid between a closed state and an open state.
- the first region (430a) and the second region (430b) may be arranged so that one surface is in contact with the other surface.
- the flexible display (430) may include a display panel and a transparent member (e.g., the transparent member (500) of FIG. 18 or the transparent member (500-1) of FIG. 19).
- the display panel may include a flexible region (e.g., the second region (430b)) and a non-flexible region (e.g., the first region (430a)) adjacent to the flexible region, like the flexible display (430).
- the display panel may be arranged to display an image.
- the display panel may be, for example, an emissive display panel, but is not limited thereto.
- the display panel may be, for example, an organic light-emitting display panel or a quantum dot light-emitting display panel.
- An emissive layer of an organic light-emitting display panel may include an organic light-emitting material.
- An emissive layer of a quantum dot light-emitting display panel may include quantum dots and quantum rods.
- the display panel may be flexible.
- the transparent member (500) (window) may be arranged, for example, on a display panel.
- Other components e.g., an input detection unit
- the transparent member (500) may include an optically transparent insulating material. Accordingly, an image generated on the display panel may be easily transmitted to a user by penetrating the transparent member (500).
- the transparent member (500) can prevent the display panel from being damaged or malfunctioning due to external impact by allowing an image from the display panel to pass through and at the same time cushioning external impact.
- the external impact refers to a force applied from the outside, such as pressure or stress, and can refer to a force that causes damage to the display panel.
- Fig. 18 is a cross-sectional view of a transparent member according to one embodiment.
- the transparent member (500) of FIG. 18 may be an unfolded cross-section of the transparent member (500) based on a cross-section cut along line V4-V4' of the flexible display of FIG. 17a (e.g., the flexible display (430) of FIG. 17b).
- the thickness of the transparent member (500) may be somewhat exaggerated in FIG. 18.
- the transparent member (500) may include a first glass portion (510) and a second glass portion (520).
- the first glass portion (510) may extend from one edge of the second glass portion (520).
- the first glass portion (510) may correspond to a non-flexible area of the flexible display (430) or the display panel (not shown).
- the first glass portion (510) may have a first thickness (T1').
- the first thickness (T1') may refer to a length between the upper surface (500a) and the lower surface (500b) of the transparent member (500) in the first glass portion (510).
- the first thickness (T1') may refer to a length in the Z2-axis direction in the first glass portion (510).
- the first thickness (T1') may be, for example, thicker than the second thickness (T3').
- the first thickness (T1') may be, for example, 50 micrometers to 500 micrometers, but is not limited thereto.
- the first glass portion (510) may include a first region (511).
- the first region (511) may have a first depth (T2').
- the first depth (T2') may refer to a length of a chemically strengthened region from a surface of the first glass portion (510).
- the first depth (T2') may be determined, for example, in the first chemical strengthening process (S20) of FIG. 5.
- the first depth (T2') may have a length of, for example, 5% to 20% of the first thickness (T1'), but is not limited thereto.
- the second glass portion (520) may correspond to a flexible area of the flexible display (430) or the display panel (not shown).
- the second glass portion (520) may have a second thickness (T3').
- the second thickness (T3') may refer to a length between the upper surface (500a) and the lower surface (500b) of the transparent member (500) in the second glass portion (520).
- the second thickness (T3') may refer to a length in the Z2-axis direction in the second glass portion (520).
- the second thickness (T3') may be, for example, thinner than the first thickness (T1').
- the second thickness (T3') may be, for example, 30 micrometers to 60 micrometers, but is not limited thereto.
- the second glass portion (520) may include a second region (521).
- the second region (521) may have a second depth (T4') that is different from the first depth (511).
- the second depth (T4') may refer to a length of a chemically strengthened region from a surface of the second glass portion (520).
- the second depth (T4') may be determined, for example, in the second chemical strengthening process (S50) of FIG. 5.
- the second depth (T4') may have a length of, for example, 5% to 20% of the second thickness (T3'), but is not limited thereto.
- the second glass portion (520) may include grooves (522a, 522b) formed on the upper and lower sides.
- the grooves (522a, 522b) may include, for example, a first groove (522a) formed in the upper surface (500a) of the transparent member (500) of the second glass portion (520) and a second groove (522b) formed in the lower surface (500b) of the transparent member (500) of the second glass portion (520).
- an upper and lower notch structure may be formed.
- stress may be dispersed.
- the upper surface of the first glass portion (510) and the upper surface of the second glass portion (520) may be located on different planes.
- the upper surface of the second glass portion (520) may not be included in a plane including the upper surface of the first glass portion (510) due to the first groove (522a) formed on the upper side of the second glass portion (520).
- the upper surface of the second glass portion (520) may not be included in a plane including the upper surface of the first glass portion (510).
- the upper surface of the first glass portion (510) may be the upper surface (500a) of the transparent member (500).
- the state in which the transparent member (500) is unfolded may refer to a state in which no bent portion exists in any area of the transparent member (500).
- the lower surface of the first glass portion (510) and the lower surface of the second glass portion (520) may be located on different planes.
- the lower surface of the second glass portion (520) may not be included in the plane including the lower surface of the first glass portion (510) due to the second groove (522b) formed on the lower side of the second glass portion (520).
- the lower surface of the second glass portion (520) may not be included in the plane including the lower surface of the first glass portion (510).
- the lower surface of the first glass portion (510) may be the lower surface (500b) of the transparent member (500).
- the sizes of the first depth (T2') and the second depth (T4') may be different.
- the first depth (T2') may be larger than the second depth (T4').
- the ratio of the first depth (T2') to the first thickness (T1') may be substantially the same as the ratio of the second depth (T4') to the second thickness (T3').
- the first depth (T2') may be 7.5 micrometers and the second depth may be 4.5 micrometers.
- the ratio of the first depth (T2') to the first thickness (T1') in the first glass portion (510) and the ratio of the second depth (T4') to the second thickness (T3') in the second glass portion (520) can be substantially the same, the difference in expansion rates between the first glass portion (510) and the second glass portion (520) can be minimized.
- a warping phenomenon that may occur in the transparent member (500) (particularly, the second glass portion (520)) can be prevented.
- the second glass portion (520) may be formed to be symmetrical up and down based on a virtual plane (C') that is perpendicular to the thickness direction of the transparent member (500) and penetrates the transparent member.
- the virtual plane (C') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (500) and divides the average thickness of the transparent member (500) in half, but is not limited thereto.
- the virtual plane (C') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (500) and divides the average thickness of the first glass portion (510) in half, but is not limited thereto.
- the thickness direction may refer to the Z2-axis direction.
- the thickness direction may refer to a direction from the lower surface (500b) of the transparent member (500) toward the upper surface (500a) of the transparent member (500).
- the boundary between the first glass portion (510) and the second glass portion (520) may be formed in a step manner, but is not limited thereto.
- the transparent member (500) may further include a refractive index matching portion.
- the refractive index matching portion may be arranged around at least one of the first glass portion (510) or the second glass portion (520) to match a refractive index of light formed by a difference in thickness between the first glass portion (510) and the second glass portion (520), for example.
- the refractive index matching portion may be made of, for example, a transparent material.
- the refractive index matching portion may be made of, for example, a urethane-based, acrylic-based, or silicone-based material.
- the refractive index matching portion may have a refractive index substantially equal to that of the base layer (501), for example.
- Fig. 19 is a cross-sectional view of a transparent member according to another embodiment.
- the transparent member (500-1) of FIG. 19 may be a cross-section of the transparent member (500-1) based on a cross-section cut along the line V4-V4' of the flexible display of FIG. 17b (e.g., the flexible display (430) of FIG. 17b).
- the thickness of the first glass portion (510), the first depth of the first region (511), the thickness of the second glass portion (520-1), and the second depth of the second region (521-1) are described in FIG. 18 and are therefore omitted.
- a detailed description of the components described in FIG. 18 among the components of FIG. 19 is omitted.
- the thickness of the transparent member (500-1) may be somewhat exaggerated in FIG. 19.
- a transparent member (500-1) has an overall configuration identical or similar to that of the transparent member (500) of FIG. 18, but differs in that it further includes a third glass portion (530). The differences will be mainly described below.
- the third glass portion (530) may be disposed between the first glass portion (510) and the second glass portion (520-1).
- the third glass portion (530) may be disposed such that one side contacts the edge of the first glass portion (510) and the other side contacts the edge of the second glass portion (520-1).
- the third glass portion (530) may have an inclined shape.
- the third glass portion (530) may be formed, for example, to be inclined downward from the first glass portion (510) side to the second glass portion (520-1) side.
- the third glass portion (530) may be formed, for example, to be inclined so as to connect the first glass portion (510) and the second glass portion (520-1).
- the slope of the third glass portion (530) may be a flat slope, but is not limited thereto, and may also be a curved slope.
- the third glass portion (530) may be formed by the etching process (S30) of FIG. 5.
- an upper groove (522a-1) and a lower groove (522b-1) may be formed around the second glass portion (520-1) and the third glass portion (530).
- the chemical strengthening depth of the third glass portion (530) may be the same as or similar to the chemical strengthening depth of the second glass portion (520-1).
- the thickness of the base layer (501) can be gradually changed, thereby improving the visibility of the transparent member (500-1).
- FIG. 20 is a drawing of an electronic device in a closed state according to one embodiment.
- FIG. 21 is a drawing of an electronic device in an open state according to one embodiment.
- the electronic device (600) of FIGS. 20 and 21 may be at least partially similar to the electronic device (101) of FIG. 1, or may further include other embodiments of the electronic device (101). Some of the components of the electronic device (600) illustrated in FIGS. 20 and 21 may be identical to or similar to some of the components of the electronic device (400) illustrated in FIGS. 15A, 15B, 16A, and 16B. Hereinafter, descriptions of overlapping components are omitted.
- an electronic device (600) may include all or part of a first housing (610), a second housing (620), a third housing (630), and a flexible display display (640).
- the second housing (620) and the third housing (630) may be symmetrical with respect to the center line of the first housing (610), but are not limited thereto.
- the center line of the first housing (610) may refer to an imaginary line in the Z3-axis direction that divides the first housing in half.
- the second housing (620) can be coupled to the first housing (610) so as to be movable in a designated direction and within a designated distance from the first housing (610).
- the designated direction can be the first direction (D1).
- At least a portion of the second housing (620) can be accommodated within the first housing (610).
- the second housing (620) can slide relative to the first housing (610) while at least a portion of the second housing (620) is accommodated within the first housing (610).
- the third housing (630) can be coupled to the first housing (610) so as to be movable in a designated direction and within a designated distance from the first housing (610).
- the designated direction can be a second direction (D2).
- the second direction (D2) can be an opposite direction to the first direction (D1), but is not limited thereto.
- the second direction can also be a direction perpendicular to the first direction (D1).
- At least a portion of the third housing (630) can be accommodated within the first housing (610).
- the third housing (630) can slide relative to the first housing (610) while being accommodated at least a portion of the third housing (630).
- the flexible display (640) can transition between an open state and a closed state as the second housing (620) and/or the third housing (630) slide relative to the first housing (610).
- the open state may refer to a state in which the area of the flexible display (640) exposed to the front of the electronic device (600) is maximized.
- the open state may refer to a state in which the second housing (620) and the third housing (630) are maximizedly slid out from the first housing (610).
- the closed state may refer to a state in which the area of the flexible display (640) exposed to the front of the electronic device (600) is minimized.
- the closed state may refer to a state in which the second housing (620) and the third housing (630) are maximizedly slid in to the first housing (610).
- the flexible display (640) may have an intermediate state between the open and closed state depending on the degree to which it is exposed to the front of the electronic device (600).
- the flexible display (640) can be accommodated across the first housing (610), the second housing (620), and the third housing.
- the flexible display (640) can be disposed on the front side of the electronic device (600) so as to be supported, for example, through at least a portion of the first housing (610), the second housing (620), and the third housing (630).
- the flexible display (640) can have a variable display area as, for example, the second housing (620) or the third housing (630) slides in a specified direction relative to the first housing (610).
- the second housing (620) and the third housing (630) can operate independently of each other.
- the second housing (620) can slide relative to the first housing (610) regardless of the movement or position of the third housing (630).
- the third housing (630) can slide relative to the first housing (610) regardless of the movement or position of the second housing (620).
- the present invention is not limited thereto, and the second housing (620) and the third housing (630) can operate symmetrically with respect to the center line of the first housing (610).
- the flexible display (640) may include a first region (640a) and second regions (640b, 640c) extending from the first region (640a).
- the first region (640a) may be a region that is maintained in a state exposed to the front of the electronic device (600).
- the first region (640a) may be, for example, a non-flexible region that maintains a flat surface in the flexible display (640).
- the second regions (640b, 640c) may be regions that are variably exposed to the front of the electronic device (600) depending on the operating state of the electronic device (600).
- the second regions (640b, 640c) may be flexible regions that can be bent.
- first region (640a) of the flexible display (640) may be exposed to the front of the electronic device (600).
- the entire first region (640a) and second regions (640b, 640c) of the flexible display (640) may be exposed to the front of the electronic device (600).
- the size of the area of the second region (640b, 640c) exposed to the front of the electronic device (600) may vary depending on the degree to which the second housing (620) and the third housing (630) slide out relative to the first housing (610).
- the second region (640b, 640c) of the flexible display (640) may include a 2-1 region (640b) and a 2-2 region (640c).
- the 2-1 region (640b) and the 2-2 region (640c) may each be arranged adjacent to the first region (640a).
- the 2-1 region (640b) may extend from one side (e.g., an edge in the -X3-axis direction) of the first region (640a).
- the 2-2 region (640c) may extend from the other side (e.g., an edge in the +X3-axis direction) of the first region (640a).
- FIGS. 22A and 22B are perspective views of a flexible display according to one embodiment.
- the flexible display (640) may include a first region (640a) and a second region (640b, 640c) extending from the first region (640a).
- the flexible display (640) may include a display panel and a transparent member (e.g., the transparent member (700) of FIG. 23 or the transparent member (700-1) of FIG. 24).
- the display panel may include a flexible region (e.g., the second region (640b, 640c)) and a non-flexible region (e.g., the first region (640a)) adjacent to the flexible region, like the flexible display (640).
- the display panel may be arranged to display an image.
- the display panel may be, for example, an emissive display panel, but is not limited thereto.
- the display panel may be, for example, an organic light-emitting display panel or a quantum dot light-emitting display panel.
- An emissive layer of an organic light-emitting display panel may include an organic light-emitting material.
- An emissive layer of a quantum dot light-emitting display panel may include quantum dots and quantum rods.
- the display panel may be flexible.
- the transparent member (700) (window) may be arranged, for example, on a display panel.
- Other components e.g., an input detection unit
- the transparent member (700) may include an optically transparent insulating material. Accordingly, an image generated on the display panel may be easily transmitted to a user by penetrating the transparent member (700).
- the transparent member (700) can prevent the display panel from being damaged or malfunctioning due to external impact by allowing an image from the display panel to pass through and at the same time cushioning external impact.
- the external impact refers to a force applied from the outside, such as pressure or stress, and can refer to a force that causes damage to the display panel.
- FIG. 23 is a cross-sectional view of a transparent member according to one embodiment.
- the transparent member (700) of FIG. 23 may be a cross-section of the transparent member (700) based on a cross-section cut along the line V5-V5' of the flexible display of FIG. 22b (e.g., the flexible display (640) of FIG. 22b).
- the thickness of the transparent member (700) may be somewhat exaggerated in FIG. 23.
- the transparent member (700) may include a first glass portion (710) and a second glass portion (720a, 720b).
- the first glass portion (710) may extend from one edge of the second glass portion (720a, 720b).
- the second glass portion (720a, 720b) may be disposed between, for example, two first glass portions (710).
- a second-1 portion (720a) may be disposed on one side and a second-2 portion (720b) may be disposed on the other side.
- the first glass portion (710) may correspond to a non-flexible area of the flexible display (640) or the display panel (not shown).
- the first glass portion (710) may have a first thickness (T1'').
- the first thickness (T1'') may refer to a length between the upper surface (700a) and the lower surface (700b) of the transparent member (700) in the first glass portion (710).
- the first thickness (T1'') may refer to a length in the Z3-axis direction in the first glass portion (710).
- the first thickness (T1'') may be, for example, thicker than the second thickness (T3'').
- the first thickness (T1'') may be, for example, 50 micrometers to 500 micrometers, but is not limited thereto.
- the first glass portion (710) may include a first region (711).
- the first region (711) may have a first depth (T2'').
- the first depth (T2'') may refer to a length of a chemically strengthened region from a surface of the first glass portion (710).
- the first depth (T2'') may be determined, for example, in the first chemical strengthening process (S20) of FIG. 5.
- the first depth (T2'') may have a length of, for example, 5% to 20% of the first thickness (T1''), but is not limited thereto.
- the second glass portion (720a, 720b) may correspond to a flexible area of the flexible display (640) or a display panel (not shown).
- the second glass portion (720a, 720b) may have a second thickness (T3'').
- the second thickness (T3'') may refer to a length between the upper surface (700a) and the lower surface (700b) of the transparent member (700) in the second glass portion (720a, 720b).
- the second thickness (T3'') may refer to a length in the Z3-axis direction in the second glass portion (720a, 720b).
- the second thickness (T3'') may be, for example, thinner than the first thickness (T1'').
- the second thickness (T3'') may be, for example, 30 micrometers to 50 micrometers, but is not limited thereto.
- the second glass portion (720a, 720b) may include a second region (721).
- the second region (721) may have a second depth (T4'') that is different from the first depth (T2'').
- the second depth (T4'') may refer to a length of a chemically strengthened region from a surface of the second glass portion (720a, 720b).
- the second depth (T4'') may be determined, for example, in the second chemical strengthening process (S50) of FIG. 5.
- the second depth (T4'') may have a length of, for example, 5% to 20% of the second thickness (T3''), but is not limited thereto.
- the second glass portion (720a, 720b) may include grooves (722a, 722b) formed on the upper and lower sides.
- the grooves (722a, 722b) may include, for example, a first groove (722a) formed in the upper surface (700a) of the transparent member (700) in the second glass portion (720a, 720b) toward the lower surface (700b) of the transparent member (700) in the second glass portion (720a, 720b).
- the internal stress of the first glass portion (710) may be dispersed.
- the upper surface of the first glass portion (710) and the upper surfaces of the second glass portions (720a, 720b) may be located on different planes.
- the upper surface of the second glass portion (720a, 720b) may not be included in a plane including the upper surface of the first glass portion (710) due to the first groove (722a) formed on the upper side of the second glass portion (720a, 720b).
- the upper surface of the second glass portion (720a, 720b) may not be included in a plane including the upper surface of the first glass portion (710).
- the upper surface of the first glass portion (710) may be the upper surface (700a) of the transparent member (700).
- the state in which the transparent member (700) is unfolded may refer to a state in which no bent portion exists in any area of the transparent member (700).
- the lower surface of the first glass portion (710) and the lower surface of the second glass portion (720a, 720b) may be located on different planes.
- the lower surface of the second glass portion (720a, 720b) may not be included in a plane including the lower surface of the first glass portion (710) due to the second groove (722b) formed on the lower side of the second glass portion (720a, 720b).
- the lower surface of the second glass portion (720a, 720b) may not be included in a plane including the lower surface of the first glass portion (710).
- the lower surface of the first glass portion (710) may be the lower surface (700b) of the transparent member (700).
- the sizes of the first depth (T2'') and the second depth (T4'') may be different.
- the first depth (T2'') may be larger than the second depth (T4'').
- the ratio of the first depth (T2'') to the first thickness (T1'') may be substantially the same as the ratio of the second depth (T4'') to the second thickness (T3'').
- the first depth (T2'') may be 7.5 micrometers and the second depth may be 4.5 micrometers.
- the ratio of the first depth (T2'') to the first thickness (T1'') in the first glass portion (710) and the ratio of the second depth (T4'') to the second thickness (T3'') in the second glass portion (720a, 720b) can be substantially the same, the difference in expansion rates between the first glass portion (710) and the second glass portion (720a, 720b) can be minimized.
- a warping phenomenon that may occur in the transparent member (700) particularly, the second glass portion (720a, 720b)
- the second glass portions (720a, 720b) may be formed to be symmetrical up and down based on a virtual plane (C'') that is perpendicular to the thickness direction of the transparent member (700) and penetrates the transparent member.
- the virtual plane (C'') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (700) and divides the average thickness of the transparent member (700) in half, but is not limited thereto.
- the virtual plane (C'') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (700) and divides the average thickness of the first glass portion (710) in half, but is not limited thereto.
- the thickness direction may refer to the Z3-axis direction.
- the thickness direction may refer to a direction from the lower surface (700b) of the transparent member (700) toward the upper surface (700a) of the transparent member (700).
- the boundary between the first glass portion (710) and the second glass portion (720a, 720b) may be formed in a step manner, but is not limited thereto.
- the transparent member (700) may further include a refractive index matching portion.
- the refractive index matching portion may be arranged around at least one of the first glass portion (710) or the second glass portion (720a, 720b) to match a refractive index of light formed by a difference in thickness between the first glass portion (710) and the second glass portion (720a, 720b), for example.
- the refractive index matching portion may be made of, for example, a transparent material.
- the refractive index matching portion may be made of, for example, a urethane-based, acrylic-based, or silicone-based material.
- the refractive index matching portion may have a refractive index substantially equal to that of the base layer (701), for example.
- Fig. 24 is a cross-sectional view of a transparent member according to another embodiment.
- the transparent member (700-1) of FIG. 24 may be a cross-section of the transparent member (700-1) based on a cross-section cut along the line V5-V5' of the flexible display of FIG. 22b (e.g., the flexible display (640) of FIG. 22b).
- the thickness of the first glass portion (710), the first depth of the first region (711), the thickness of the second glass portions (720a-1, 720b-1), and the second depth of the second region (721-1) are described in FIG. 23 and are therefore omitted below. A detailed description of the components described in FIG. 23 among the components of FIG. 24 is omitted.
- the thickness of the transparent member (700-1) may be somewhat exaggerated in FIG. 24.
- a transparent member (700-1) has an overall configuration identical or similar to that of the transparent member (700) of FIG. 23, but differs in that it further includes a third glass portion (730a, 730b). The differences will be mainly described below.
- the third glass portion (730a, 730b) may be positioned between the first glass portion (710) and the second glass portion (720a-1, 720b-1).
- the third glass portion (730a, 730b) may be positioned such that one side contacts the edge of the first glass portion (710) and the other side contacts the edge of the second glass portion (720a-1, 720b-1).
- the third glass portion (730a, 730b) may have an inclined shape.
- the third glass portion (730a, 730b) may be formed to slope downward from the first glass portion (710) side toward the second glass portion (720a-1, 720b-1).
- the third glass portion (730a, 730b) may be formed to be inclined, for example, to connect the first glass portion (710) and the second glass portion (720a-1, 720b-1).
- the inclination of the third glass portion (730a, 730b) may be a flat inclination, but is not limited thereto, and may also be a curved inclination.
- the third glass portion (730a, 730b) may be formed by the etching process (S30) of FIG. 5.
- an upper groove (722a-1) and a lower groove (722b-1) may be formed around the second glass portion (720a-1, 720b-1) and the third glass portion (730a, 730b).
- the chemical strengthening depth of the third glass portion (730a, 730b) may be the same as or similar to the chemical strengthening depth of the second glass portion (720a-1, 720b-1).
- the thickness of the base layer (701) can be gradually changed, thereby improving the visibility of the transparent member (700-1).
- FIG. 25 is a drawing of an electronic device in a closed state according to one embodiment.
- FIG. 26 is a drawing of an electronic device in an open state according to one embodiment.
- the electronic device (800) of FIGS. 25 and 26 may be at least partially similar to the electronic device (101) of FIG. 1, or may further include other embodiments of the electronic device (101).
- an electronic device (800) may include a housing (810), a flexible display (840), and a roller member (830).
- a housing (810) For example, at least a portion of the flexible display (840) and the roller member (830) may be accommodated in the housing (810).
- the electronic device (800) may be placed inside the housing (810) with the flexible display (840) rolled around the roller member (830).
- the flexible display (840) may have a structure in which it is pulled out from inside the housing (810) and unfolded by a user's manipulation or a mechanical operation of the roller member (830), thereby providing a display area in which a screen is displayed.
- An opening may be formed on one side of the housing (810) to allow the flexible display (840) to move.
- the flexible display (840) may be moved to the outside of the housing (810) and exposed through the opening, or may be accommodated inside the housing (810).
- a roller member (830) may be rotatably coupled inside the housing (810).
- the roller member (830) may be surrounded by at least a portion of the flexible display (840). As the roller member (830) rotates relative to the housing (810) inside the housing (810), the flexible display (840) may move to the outside or inside of the housing (810).
- the flexible display (840) can be wound around the roller member (830). One end of the flexible display (840) can be connected to the roller member (830).
- the flexible display (840) can be directly connected to the roller member (830), for example, or can be indirectly connected to the roller member (830) via a medium (not shown) that performs signal transmission.
- the flexible display (840) may include a first region (840a) and a second region (840b) extending from the first region (840a).
- the first region (840a) may be, for example, a non-flexible region that maintains a flat surface in the flexible display (840).
- the second region (840b) may be, for example, a flexible region that can be bent.
- the second region (840b) may have an area exposed to the outside that may vary depending on the rotation of the roller member (830).
- the flexible display (840) can transition between an open state and a closed state as the roller member (830) rotates.
- the open state may refer to a state in which the area of the flexible display (840) rolled around the roller member (830) by the rotation of the roller member (830) is maximized and exposed to the outside of the housing (810).
- the closed state may refer to a state in which the flexible display (840) is rolled around the roller member (830) to the maximum extent.
- the flexible display (840) may also have an intermediate state between the open state and the closed state depending on the degree of exposure to the outside of the housing (810).
- the first region (840a) may be exposed to the outside.
- this is not limited, and when the flexible display (840) is closed, not all regions may be exposed to the outside.
- the flexible display (840) may include a display panel and a transparent member (e.g., the transparent member (900) of FIG. 27 or the transparent member (900-1) of FIG. 28).
- a transparent member e.g., the transparent member (900) of FIG. 27 or the transparent member (900-1) of FIG. 28.
- the display panel may be arranged to display an image.
- the display panel may be, for example, an emissive display panel, but is not limited thereto.
- the display panel may be, for example, an organic light-emitting display panel or a quantum dot light-emitting display panel.
- An emissive layer of an organic light-emitting display panel may include an organic light-emitting material.
- An emissive layer of a quantum dot light-emitting display panel may include quantum dots and quantum rods.
- the display panel may be flexible.
- the transparent member (900) may be arranged, for example, on a display panel.
- Other components e.g., an input detection unit
- the transparent member (900) may include an optically transparent insulating material. Accordingly, an image generated on the display panel may be easily transmitted to a user by penetrating the transparent member (900).
- the transparent member (900) can prevent the display panel from being damaged or malfunctioning due to external impact by allowing an image from the display panel to pass through and at the same time cushioning external impact.
- the external impact refers to a force applied from the outside, such as pressure or stress, and can refer to a force that causes damage to the display panel.
- Figure 27 is a cross-sectional view of a transparent member according to one embodiment.
- the thickness of the transparent member (900) may be somewhat exaggerated in FIG. 27.
- the transparent member (900) may include a first glass portion (910) and a second glass portion (920).
- the first glass portion (910) may extend from one edge of the second glass portion (920).
- the first glass portion (910) may correspond to a non-flexible area of the flexible display (840) or the display panel (not shown).
- the first glass portion (910) may have a first thickness (T1''').
- the first thickness (T1''') may refer to a length between the upper surface (900a) and the lower surface (900b) of the transparent member (900) in the first glass portion (910).
- the first thickness (T1''') may refer to a length in the Z4-axis direction in the first glass portion (910).
- the first thickness (T1''') may be, for example, thicker than the second thickness (T3''').
- the first thickness (T1''') may be, for example, 50 micrometers to 500 micrometers, but is not limited thereto.
- the first glass portion (910) may include a first region (911).
- the first region (911) may have a first depth (T2''').
- the first depth (T2''') may refer to a length of a chemically strengthened region from a surface of the first glass portion (910).
- the first depth (T2''') may be determined, for example, in the first chemical strengthening process (S20) of FIG. 5.
- the first depth (T2''') may have a length of, for example, 5% to 20% of the first thickness (T1'''), but is not limited thereto.
- the second glass portion (920) may correspond to a flexible area of the flexible display (840) or the display panel (not shown).
- the second glass portion (920) may have a second thickness (T3''').
- the second thickness (T3''') may refer to a length between the upper surface (900a) and the lower surface (900b) of the transparent member (900) in the second glass portion (920).
- the second thickness (T3''') may refer to a length in the Z4-axis direction in the second glass portion (920).
- the second thickness (T3''') may be, for example, thinner than the first thickness (T1''').
- the second thickness (T3''') may be, for example, 30 micrometers to 60 micrometers, but is not limited thereto.
- the second glass portion (920) may include a second region (921).
- the second region (921) may have a second depth (T4''') that is different from the first depth (911).
- the second depth (T4''') may refer to a length of a chemically strengthened region from a surface of the second glass portion (920).
- the second depth (T4''') may be determined, for example, in the second chemical strengthening process (S50) of FIG. 5.
- the second depth (T4''') may have a length of, for example, 5% to 20% of the second thickness (T3'''), but is not limited thereto.
- the second glass portion (920) may include grooves (922a, 922b) formed on the upper and lower sides.
- the grooves (922a, 922b) may include, for example, a first groove (922a) formed in the upper surface (900a) of the transparent member (900) of the second glass portion (920) toward the lower surface (900b) of the transparent member (900) of the second glass portion (920) and a second groove (922b) formed in the lower surface (900b) of the transparent member (900) of the second glass portion (920).
- an upper and lower notch structure may be formed.
- stress may be dispersed.
- the upper surface of the first glass portion (910) and the upper surface of the second glass portion (920) may be located on different planes.
- the upper surface of the second glass portion (920) may not be included in a plane including the upper surface of the first glass portion (910) due to the first groove (922a) formed on the upper side of the second glass portion (920).
- the upper surface of the second glass portion (920) may not be included in a plane including the upper surface of the first glass portion (910).
- the upper surface of the first glass portion (910) may be the upper surface (900a) of the transparent member (900).
- the state in which the transparent member (900) is unfolded may refer to a state in which no bent portion exists in any area of the transparent member (900).
- the lower surface of the first glass portion (910) and the lower surface of the second glass portion (920) may be located on different planes.
- the lower surface of the second glass portion (920) may not be included in a plane including the lower surface of the first glass portion (910) due to the second groove (922b) formed on the lower side of the second glass portion (920).
- the lower surface of the second glass portion (920) may not be included in a plane including the lower surface of the first glass portion (910).
- the lower surface of the first glass portion (910) may be the lower surface (900b) of the transparent member (900).
- the sizes of the first depth (T2''') and the second depth (T4'') can be different.
- the first depth (T2''') can be larger than the second depth (T4''').
- the ratio of the first depth (T2''') to the first thickness (T1''') can be substantially the same as the ratio of the second depth (T4''') to the second thickness (T3''').
- the first depth (T2''') can be 7.5 micrometers and the second depth can be 4.5 micrometers.
- the ratio of the first depth (T2''') to the first thickness (T1''') in the first glass portion (910) and the ratio of the second depth (T4''') to the second thickness (T3''') in the second glass portion (920) can be substantially the same, the difference in expansion rates between the first glass portion (910) and the second glass portion (920) can be minimized.
- a warping phenomenon that may occur in the transparent member (900) (particularly, the second glass portion (920)) can be prevented.
- the second glass portion (920) may be formed to be symmetrical up and down based on a virtual plane (C''') that is perpendicular to the thickness direction of the transparent member (900) and penetrates the transparent member.
- the virtual plane (C''') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (900) and divides the average thickness of the transparent member (900) in half, but is not limited thereto.
- the virtual plane (C''') may be, for example, a plane that is perpendicular to the thickness direction of the transparent member (900) and divides the average thickness of the first glass portion (910) in half, but is not limited thereto.
- the thickness direction may refer to the Z4-axis direction.
- the thickness direction may refer to a direction from the lower surface (900b) of the transparent member (900) toward the upper surface (900a) of the transparent member (900).
- the boundary between the first glass portion (910) and the second glass portion (920) may be formed in a step manner, but is not limited thereto.
- the transparent member (900) may further include a refractive index matching portion.
- the refractive index matching portion may be arranged around at least one of the first glass portion (910) or the second glass portion (920) to match a refractive index of light formed by a difference in thickness between the first glass portion (910) and the second glass portion (920), for example.
- the refractive index matching portion may be made of, for example, a transparent material.
- the refractive index matching portion may be made of, for example, a urethane-based, acrylic-based, or silicone-based material.
- the refractive index matching portion may have a refractive index substantially equal to that of the base layer (901), for example.
- Fig. 28 is a cross-sectional view of a transparent member according to another embodiment.
- Fig. 28 the thickness of the first glass portion (910), the first depth of the first region (911), the thickness of the second glass portion (920-1), and the second depth of the second region (921-1) are described in Fig. 27, and are omitted below. A detailed description of the components described in Fig. 27 among the components of Fig. 28 is omitted. For convenience of explanation, the thickness of the transparent member (900-1) may be somewhat exaggerated in Fig. 28.
- a transparent member (900-1) has an overall configuration identical or similar to that of the transparent member (900) of FIG. 27, but differs in that it further includes a third glass portion (930). The differences will be mainly described below.
- the third glass portion (930) may be disposed between the first glass portion (910) and the second glass portion (920-1).
- the third glass portion (930) may be disposed such that one side contacts an edge of the first glass portion (910) and the other side contacts an edge of the second glass portion (920-1).
- the third glass portion (930) may have an inclined shape.
- the third glass portion (930) may be formed, for example, to be inclined downward from the first glass portion (910) side to the second glass portion (920-1) side.
- the third glass portion (930) may be formed, for example, to be inclined so as to connect the first glass portion (910) and the second glass portion (920-1).
- the slope of the third glass portion (930) may be a flat slope, but is not limited thereto, and may also be a curved slope.
- the third glass portion (930) may be formed by the etching process (S30) of FIG. 5.
- an upper groove (922a-1) and a lower groove (922b-1) may be formed around the second glass portion (920-1) and the third glass portion (930).
- the chemical strengthening depth of the third glass portion (930) may be the same as or similar to the chemical strengthening depth of the second glass portion (920-1).
- the thickness of the base layer (901) can be gradually changed to improve the visibility of the transparent member (900-1).
- Figures 29 and 30 are tables for explaining the difference in expansion length of transparent members having differential thicknesses according to the chemical strengthening depth ratio.
- Fig. 29 is an exemplary experimental example for explaining the difference in expansion length (mm) that occurs when the reinforcement depth of all regions of a transparent member having a differential thickness is manufactured to be the same according to a comparative example.
- the first glass portion of the transparent member may refer to a portion corresponding to a non-flexible region of the flexible display
- the second glass portion of the transparent member may refer to a portion corresponding to a flexible region of the flexible display.
- the reinforcement depth ratio of the first glass portion may be 10.0% and the reinforcement depth ratio of the second glass portion may be 16.7%.
- a difference may occur in the expansion ratio of the first glass portion (0.09%) and the expansion ratio of the second glass portion (0.14%).
- a difference in the expansion length between the first glass portion and the second glass portion may occur as 0.06 mm, which may result in a warping phenomenon.
- the reinforcement depth ratio of the first glass portion may be 10.0% and the reinforcement depth ratio of the second glass portion may be 20%.
- a difference may occur in the expansion ratio of the first glass portion (0.09%) and the expansion ratio of the second glass portion (0.17%).
- a difference in the expansion length between the first glass portion and the second glass portion may occur as 0.09 mm, which may result in a warping phenomenon.
- the reinforcement depth ratio of the first glass portion may be 9.0% and the reinforcement depth ratio of the second glass portion may be 15%.
- a difference may occur in the expansion ratio of the first glass portion (0.08%) and the expansion ratio of the second glass portion (0.13%).
- a difference in the expansion length between the first glass portion and the second glass portion may occur of 0.05 mm, which may result in a warping phenomenon.
- the reinforcement depth ratio of the first glass portion may be 7.5% and the reinforcement depth ratio of the second glass portion may be 15%.
- a difference may occur in the expansion ratio of the first glass portion (0.06%) and the expansion ratio of the second glass portion (0.13%).
- a difference in the expansion length between the first glass portion and the second glass portion may occur as 0.06 mm, which may result in a warping phenomenon.
- FIG. 30 is an exemplary experimental example to explain that when the reinforcement depth ratios of the first depth (311, 511, 711, 911) and the second depth (321, 521, 721, 921) are manufactured to be the same according to various embodiments of the present disclosure, no difference in expansion length occurs between the first glass portion (310, 510, 710, 910) and the second glass portion (320, 520, 720, 920).
- the table of FIG. 30 is exemplary and does not limit the scope of the rights of the present disclosure.
- the size of the first depth (T2, T2', T2'', T2'') of the first region (311, 511, 711, 911) and the second depth (T4, T4', T4'', T4'') of the second region (321, 521, 721, 921) can be varied to match the reinforcement depth ratio, thereby minimizing the difference in expansion length.
- a transparent member (300, 500, 700, 900) can implement a reinforcement depth ratio of all regions of the transparent member (300, 500, 700, 900) as 15%, regardless of a first thickness (T1, T1', T1'', T1''') of a first glass portion (310, 510, 710, 910) and a second thickness (T3, T3', T3'', T3'') of a second glass portion (320, 520, 720, 920).
- T1, T1', T1'', T1'', T1''') of a first glass portion (310, 510, 710, 910) and a second thickness (T3, T3', T3'', T3''') of a second glass portion (320, 520, 720, 920).
- a flexible transparent member (300, 500, 700, 900) may include a first glass portion (310, 510, 710, 910) having a first thickness (T1, T1', T1'', T1'''), a second glass portion (320, 520, 720, 920) having a second thickness (T3, T3', T3'', T3'') thinner than the first thickness (T1, T1', T1'', T1'''), and a resin portion (340) at least partially disposed on the second glass portion (320, 520, 720, 920).
- the upper surface of the second glass portion (320, 520, 720, 920) may have a shape that is recessed downward with respect to the upper surface of the first glass portion (310, 510, 710, 910).
- the lower surface of the second glass portion (320, 520, 720, 920) may have a shape that is recessed upward with respect to the lower surface of the first glass portion (310, 510, 710, 910).
- the resin portion (340) may be filled within the recessed area.
- the first glass portion (310, 510, 710, 910) and the second glass portion (320, 520, 720, 920) may be formed to be symmetrical upward and downward.
- the first glass portion (310, 510, 710, 910) may include a first region (311, 511, 711, 911) that is chemically strengthened inwardly by a first depth (T2, T2', T2'', T2'') from the surface.
- the second glass portion (320, 520, 720, 920) may include a second region (321, 521, 721, 921) that is chemically strengthened inwardly by a second depth (T4, T4', T4'', T4''') from the surface.
- the ratio of the first depth (T2, T2', T2'', T2''') to the first thickness (T1, T1', T1'', T1''') may be substantially equal to the ratio of the second depth (T4, T4', T4'', T4'') to the second thickness (T3, T3', T3'', T3'').
- a flexible display may include a display panel and a transparent member (300, 500, 700, 900) disposed on the display panel.
- the transparent member (300, 500, 700, 900) may include a first glass portion (310, 510, 710, 910) having a first thickness (T1, T1', T1'', T1'''), and a second glass portion (320, 520, 720, 920) having a second thickness (T3, T3', T3'', T3''') thinner than the first thickness (T1, T1', T1'', T1''').
- the upper surface of the second glass portion (320, 520, 720, 920) may have a shape that is recessed in the direction toward the display panel with respect to the upper surface of the first glass portion (310, 510, 710, 910).
- the lower surface of the second glass portion (320, 520, 720, 920) may have a shape that is recessed in the opposite direction toward the display panel with respect to the lower surface of the first glass portion (310, 510, 710, 910).
- the first glass portion (310, 510, 710, 910) may include a first region (311, 511, 711, 911) that is chemically strengthened inwardly by a first depth (T2, T2', T2'', T2'') from the surface.
- the second glass portion (320, 520, 720, 920) may include a second region (321, 521, 721, 921) that is chemically strengthened inwardly by a second depth (T4, T4', T4'', T4''') from the surface.
- the first depth (T2, T2', T2'', T2'') may be greater than the second depth (T4, T4', T4'', T4'').
- the ratio of the first depth (T2, T2', T2'', T2''') to the first thickness (T1, T1', T1'', T1''') may be substantially equal to the ratio of the second depth (T4, T4', T4'', T4'') to the second thickness (T3, T3', T3'', T3'').
- the first depth (T2, T2', T2'', T2'') may have a length that is 5% to 20% of the first thickness (T1, T1', T1'', T1''').
- the second depth (T4, T4', T4'', T4'') may have a length that is 5% to 20% of the second thickness (T3, T3', T3'', T3'').
- the second glass portion (320, 520, 720, 920) may have a stepped shape with respect to the first glass portion (310, 510, 710, 910).
- the transparent member (300, 500, 700, 900) may further include a third glass portion (330, 530, 730, 930) formed at an angle to connect the first glass portion (310, 510, 710, 910) and the second glass portion (320, 520, 720, 920).
- a third glass portion 330, 530, 730, 930 formed at an angle to connect the first glass portion (310, 510, 710, 910) and the second glass portion (320, 520, 720, 920).
- the second glass portion (320, 520, 720, 920) may be formed with a portion thereof penetrating therethrough.
- the second glass portion (320, 520, 720, 920) may have a pattern in which at least one of the upper or lower surfaces has concave portions (324, 326) and convex portions (323, 325) alternately arranged.
- the boundary between the concave portion (324) and the convex portion (323) can be formed by a vertical step.
- the alternating pattern of the concave portions (326) and the convex portions (325) may have a wave-shaped cross-section.
- the second glass portion (320, 520, 720, 920) may be formed symmetrically with respect to an imaginary plane that divides the thickness of the transparent member (300, 500, 700, 900) in half.
- An electronic device may include a housing including a first housing and a second housing, a hinge connected to the first housing and the second housing, and a flexible display at least partially accommodated in the first housing and the second housing.
- the flexible display may include a display panel, and a transparent member (300, 500, 700, 900) disposed on the display panel.
- the above transparent member (300, 500, 700, 900) may include a first glass portion (310, 510, 710, 910) having a first thickness (T1, T1', T1'', T1'''), and a second glass portion (320, 520, 720, 920) having a second thickness (T3, T3', T3'', T3'') thinner than the first thickness (T1, T1', T1'', T1''').
- An upper surface of the second glass portion (320, 520, 720, 920) may have a shape that is recessed toward the display panel side with respect to the upper surface of the first glass portion (310, 510, 710, 910).
- the lower surface of the second glass portion (320, 520, 720, 920) may have a recessed shape in the opposite direction of the display panel side with respect to the lower surface of the first glass portion (310, 510, 710, 910).
- the second glass portion (320, 520, 720, 920) may be formed symmetrically with respect to an imaginary plane that divides the thickness of the transparent member (300, 500, 700, 900) in half.
- the first glass portion (310, 510, 710, 910) may include a first region (311, 511, 711, 911) that is chemically strengthened inwardly by a first depth (T2, T2', T2'', T2'') from the surface.
- the second glass portion (320, 520, 720, 920) may include a second region (321, 521, 721, 921) that is chemically strengthened inwardly by a second depth (T4, T4', T4'', T4''') from the surface.
- the ratio of the first depth (T2, T2', T2'', T2''') to the first thickness (T1, T1', T1'', T1''') may be substantially equal to the ratio of the second depth (T4, T4', T4'', T4'') to the second thickness (T3, T3', T3'', T3'').
- a flexible display may include a display panel and a transparent member (300, 500, 700, 900) disposed on the display panel and having at least a portion thereof deformable.
- the above transparent member (300, 500, 700, 900) includes a first reinforced region (311, 511, 711, 911) having a first depth (T2, T2', T2'', T2''') from the surface, a first glass portion (310, 510, 710, 910) having a first thickness (T1, T1', T1'', T1'''), and a second region (321, 521, 721, 921) having a second depth (T4, T4', T4'', T4'') relatively smaller than the first depth (T2, T2', T2'', T2''') from the surface, and a second thickness (T3, T3', It may include a second glass portion (320, 520, 720, 920) having a T3'', T3'''''
- a method for manufacturing a transparent member may include a process of chemically strengthening an entire surface of glass for a first period of time, a process of etching a portion of the glass that has been chemically strengthened for the first period of time, and a process of chemically strengthening an entire surface of the glass, of which a portion has been etched, for a second period of time shorter than the first period of time.
- the expression “configured to” used in the present disclosure can be appropriately used interchangeably with, for example, “suitable for,” “having the ability to,” “designed to,” “modified to,” “made to,” or “capable of doing.”
- the term “configured to” may not necessarily mean only something “specially designed” in terms of hardware.
- the expression “a device configured to do” may mean that the device is “capable of doing” together with other devices or components.
- the phrase “a device configured (or set) to perform A, B, and C” may mean a dedicated device for performing the operations, or a general-purpose device that can perform various operations including the operations.
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Abstract
Description
Claims (15)
- 표시 패널; 및상기 표시 패널 상에 배치된 투명 부재(300, 500, 700, 900)를 포함하되,상기 투명 부재(300, 500, 700, 900)는,제1 두께(T1, T1', T1'', T1''')를 가지는 제1 글래스 부분(310, 510, 710, 910), 및상기 제1 두께(T1, T1', T1'', T1''')보다 얇은 제2 두께(T3, T3', T3'', T3''')를 가지는 제2 글래스 부분(320, 520, 720, 920)을 포함하고,상기 제2 글래스 부분(320, 520, 720, 920)의 상면은 상기 제1 글래스 부분(310, 510, 710, 910)의 상면에 대하여 상기 표시 패널측 방향으로 리세스된 형상을 가지고,상기 제2 글래스 부분(320, 520, 720, 920)의 하면은 상기 제1 글래스 부분(310, 510, 710, 910)의 하면에 대하여 상기 표시패널측 방향의 반대 방향으로 리세스된 형상을 가지는,플렉서블 디스플레이.
- 제1항에 있어서,상기 제1 글래스 부분(310, 510, 710, 910)은,표면을 기준으로 제1 깊이(T2, T2', T2'', T2''')만큼 내측으로 화학 강화된 제1 영역(311, 511, 711, 911)을 포함하고,상기 제2 글래스 부분(320, 520, 720, 920)은,표면을 기준으로 제2 깊이(T4, T4', T4'', T4''')만큼 내측으로 화학 강화된 제2 영역(321, 521, 721, 921)을 포함하는, 플렉서블 디스플레이.
- 제2항에 있어서,상기 제1 깊이(T2, T2', T2'', T2''')는 상기 제2 깊이(T4, T4', T4'', T4''')보다 큰, 플렉서블 디스플레이.
- 제2항에 있어서,상기 제1 두께(T1, T1', T1'', T1''') 대비 상기 제1 깊이(T2, T2', T2'', T2''')의 비율은,상기 제2 두께(T3, T3', T3'', T3''') 대비 상기 제2 깊이(T4, T4', T4'', T4''')의 비율과 실질적으로 동일한, 플렉서블 디스플레이.
- 제2항에 있어서,상기 제1 깊이(T2, T2', T2'', T2''')는,상기 제1 두께(T1, T1', T1'', T1''')의 5% 내지 20%만큼의 길이를 가지고,상기 제2 깊이(T4, T4', T4'', T4''')는,상기 제2 두께(T3, T3', T3'', T3''')의 5% 내지 20%만큼의 길이를 가지는,플렉서블 디스플레이.
- 제1항 내지 제5항 중 한 항에 있어서,상기 제2 글래스 부분(320, 520, 720, 920)은 상기 제1 글래스 부분(310, 510, 710, 910)에 대하여 단차진 형상을 가지는, 플렉서블 디스플레이.
- 제1항 내지 제5항 중 한 항에 있어서,상기 투명 부재(300, 500, 700, 900)는,상기 제1 글래스 부분(310, 510, 710, 910)과 상기 제2 글래스 부분(320, 520, 720, 920)을 잇도록 경사지어 형성된 제3 글래스 부분(330, 530, 730, 930)을 더 포함하는, 플렉서블 디스플레이.
- 제1항 내지 제7항 중 한 항에 있어서,상기 제2 글래스 부분(320, 520, 720, 920)은,상면 또는 하면 중 적어도 한 면이 오목부(324, 326)와 볼록부(323, 325)가 교번 배치된 패턴을 가지는, 플렉서블 디스플레이.
- 제8항에 있어서,상기 오목부(324)와 상기 볼록부(323)의 경계는 수직 단차지어 형성된, 플렉서블 디스플레이.
- 제8항에 있어서,상기 오목부(326)와 상기 볼록부(325)의 교번 패턴은 물결 형상의 단면을 가지는, 플렉서블 디스플레이.
- 제1항 내지 제 10항 중 어느 한 항에 있어서,상기 제2 글래스 부분(320, 520, 720, 920)은,상기 투명 부재(300, 500, 700, 900)의 두께를 절반으로 나누는 가상의 평면을 기준으로 대칭되어 형성된, 플렉서블 디스플레이.
- 제1 하우징 및 제2 하우징을 포함하는 하우징;상기 제1 하우징 및 상기 제2 하우징과 연결되는 힌지; 및상기 제1 하우징 및 상기 제2 하우징에 적어도 일부가 수납되는 플렉서블 디스플레이를 포함하고,상기 플렉서블 디스플레이는,표시 패널, 및상기 표시 패널 상에 배치되는 투명 부재(300, 500, 700, 900)를 포함하되,상기 투명 부재(300, 500, 700, 900)는,제1 두께(T1, T1', T1'', T1''')를 가지는 제1 글래스 부분(310, 510, 710, 910), 및상기 제1 두께(T1, T1', T1'', T1''')보다 얇은 제2 두께(T3, T3', T3'', T3''')를 가지는 제2 글래스 부분(320, 520, 720, 920)을 포함하고,상기 제2 글래스 부분(320, 520, 720, 920)의 상면은 상기 제1 글래스 부분(310, 510, 710, 910)의 상면에 대하여 상기 표시 패널측 방향으로 리세스된 형상을 가지고,상기 제2 글래스 부분(320, 520, 720, 920)의 하면은 상기 제1 글래스 부분(310, 510, 710, 910)의 하면에 대하여 상기 표시패널측 방향의 반대 방향으로 리세스된 형상을 가지는,전자 장치.
- 제12항에 있어서,상기 제2 글래스 부분(320, 520, 720, 920)은,상기 투명 부재(300, 500, 700, 900)의 두께를 절반으로 나누는 가상의 평면을 기준으로 대칭되어 형성된, 전자 장치.
- 제12항 및 제13항 중 어느 한 항에 있어서,상기 제1 글래스 부분(310, 510, 710, 910)은,표면을 기준으로 제1 깊이(T2, T2', T2'', T2''')만큼 내측으로 화학 강화된 제1 영역(311, 511, 711, 911)을 포함하고,상기 제2 글래스 부분(320, 520, 720, 920)은,표면을 기준으로 제2 깊이(T4, T4', T4'', T4''')만큼 내측으로 화학 강화된 제2 영역(321, 521, 721, 921)을 포함하는, 전자 장치.
- 제14항에 있어서,상기 제1 두께(T1, T1', T1'', T1''') 대비 상기 제1 깊이(T2, T2', T2'', T2''')의 비율은,상기 제2 두께(T3, T3', T3'', T3''') 대비 상기 제2 깊이(T4, T4', T4'', T4''')의 비율과 실질적으로 동일한, 전자 장치.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24760474.7A EP4625100A4 (en) | 2023-02-21 | 2024-01-12 | FLEXIBLE DISPLAY UNIT AND ELECTRONIC DEVICE INCLUDING IT |
| US18/416,356 US20240284622A1 (en) | 2023-02-21 | 2024-01-18 | Flexible display and electronic device including the same |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20230022970 | 2023-02-21 | ||
| KR10-2023-0022970 | 2023-02-21 | ||
| KR10-2023-0030564 | 2023-03-08 | ||
| KR1020230030564A KR20240129972A (ko) | 2023-02-21 | 2023-03-08 | 플렉서블 디스플레이 및 이를 포함하는 전자 장치 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/416,356 Continuation US20240284622A1 (en) | 2023-02-21 | 2024-01-18 | Flexible display and electronic device including the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024177281A1 true WO2024177281A1 (ko) | 2024-08-29 |
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| PCT/KR2024/000614 Ceased WO2024177281A1 (ko) | 2023-02-21 | 2024-01-12 | 플렉서블 디스플레이 및 이를 포함하는 전자 장치 |
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| KR20220155944A (ko) * | 2016-04-27 | 2022-11-24 | 삼성전자주식회사 | 폴더블 디스플레이 장치 |
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| KR20220168640A (ko) * | 2021-06-16 | 2022-12-26 | 삼성디스플레이 주식회사 | 글라스 윈도우 및 표시 장치 |
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