WO2021073250A1 - 一种显示模组和显示装置 - Google Patents

一种显示模组和显示装置 Download PDF

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Publication number
WO2021073250A1
WO2021073250A1 PCT/CN2020/110597 CN2020110597W WO2021073250A1 WO 2021073250 A1 WO2021073250 A1 WO 2021073250A1 CN 2020110597 W CN2020110597 W CN 2020110597W WO 2021073250 A1 WO2021073250 A1 WO 2021073250A1
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WIPO (PCT)
Prior art keywords
display
area
display area
display module
back side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/110597
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English (en)
French (fr)
Inventor
王磊
潘良玉
颜源
李海燕
庞永强
刘洋
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US17/769,223 priority Critical patent/US12200991B2/en
Priority to EP20876248.4A priority patent/EP4027328A4/en
Publication of WO2021073250A1 publication Critical patent/WO2021073250A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0413—Details of dummy pixels or dummy lines in flat panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/88—Dummy elements, i.e. elements having non-functional features

Definitions

  • This application relates to the technical field of display devices, and in particular to a display module and a display device.
  • Flexible display screens have many characteristics that are not available in traditional display screens, such as light and thin, impact resistant, and rollable, which can make the display device lighter, thinner, portable, beautiful and fashionable.
  • the above-mentioned characteristics provide a broader development space for flexible display screens. Therefore, in the field of display technology, flexible display technology has received extensive attention and research.
  • the flexible display module generally includes a display area and a non-display area.
  • the non-display area is generally located around the screen and is used for arranging drive circuits, reliability protection devices, and packaging reliability structures.
  • it is necessary to further reduce the area of the non-display area, which means that the design space of the non-display area devices and reliability structures is reduced.
  • the space compression of the non-display area is likely to lead to the risk of insufficient driving force of the driving circuit, poor structural reliability, and low production yield. Therefore, the frame of the display device will still have a certain width.
  • Fig. 2 shows a schematic side view of a flexible display module.
  • the non-display area of the flexible display module is provided with signal wiring
  • the first side non-display area 021 of the flexible display module is provided with driving devices, such as chips and flexible circuit boards, etc.
  • the first side non-display area 021 is provided with external Connecting leads (Outer Lead Bonding, OLB for short) requires an external drive signal device, occupying a large space, usually the first side non-display area 021 and peripheral devices need to be bent to the back of the display area (COP Bending) to achieve flexible display
  • OLB Outer Lead Bonding
  • the present application provides a display module and a display device to increase the screen-to-body ratio of the display module, which is beneficial to realize the framelessness of the display module and improve the reliability of the display module.
  • the present application provides a display module, which includes a display area and a non-display area, wherein the non-display area is located on the peripheral side of the display area.
  • the display area is a polygonal display area and includes a plurality of sides, and the non-display area includes non-display portions connected to the sides in a one-to-one correspondence.
  • the plurality of non-display portions at least two non-display portions are folded to the back side of the display area.
  • the screen-to-body ratio of the display module can be increased; in addition, this solution can design the non-display parts to be wider, so that the design space of the non-display parts can be increased.
  • the signal line width, reliability device size, and water and oxygen protection path design can be based on reliability, which can improve the reliability of the display.
  • the non-display part in the embodiment of the present application has signal lines, and the signal lines of adjacent non-display parts are electrically connected by connecting wires, and the above-mentioned connecting lines are used to connect the signal lines located in the adjacent non-display parts.
  • the non-display portion corresponds to each side of the display area one-to-one, and there are openings between adjacent display portions, the opening is opposite to the corner area of the display area and is used to connect adjacent non-display portions.
  • the connection line of the signal line between the parts can be arranged in the corner area of the display area to control the display module of the display module.
  • the display area can be made to include an effective display area and a pseudo pixel area, where the pseudo pixel area is located between the effective display area and the non-display area, and the pseudo pixel area serves as a buffer between the effective display area and the non-display area
  • the area is displayed in a dark state to avoid display abnormalities in the transition from the display area to the non-display area.
  • connection line When the connection line is specifically arranged, the connection line can be located on the back side of the dummy pixel area, so that the connection line does not need to be made on the back side of the effective display area, which is beneficial to improve the display effect of the effective display area.
  • the non-display portion When the non-display portion is folded, the non-display portion can be folded along the dummy pixel, so that the effective display area can have a better display effect, and the edge area is not prone to defects such as deformation.
  • connection mode of the signal lines and the connection lines is not limited, and the signal lines and the connection lines can be arranged in the same layer, and the signal lines and the connection lines can be directly connected. It is also possible to arrange the signal line and the connection line in different layers, and provide a via hole in the display area or the non-display part, and the signal line and the connection line are connected through the via hole.
  • the shape of the opening is not specifically limited.
  • the opening can be a slit or a notch.
  • the specific extension direction of the slit is not limited. It is only necessary to make the adjacent non-limiting area in the corner area.
  • the display is disconnected.
  • the specific shape of the notch is not limited, it can be a U-shaped groove, a V-shaped groove, a rectangular groove, or other shapes. The user can choose according to the wiring layout or simplifying the production process.
  • the display area can be overlapped with the non-display portion of a layer, that is, there is no overlapping area between the non-display portions after the folding. This solution can further reduce the stress between adjacent non-display parts and improve the reliability of the display module.
  • the present application also provides a display device, which includes the display module in any one of the above technical solutions, and the display device has a relatively high screen occupancy, good reliability, and is conducive to the realization of a frameless structure .
  • the above-mentioned display device may include at least two display modules. Since at least two non-display portions of the above-mentioned display module are folded to the back side of the display area, it is advantageous to realize the splicing of the display modules. Therefore, the display device has The spliced display of display modules is beneficial to increase the display area according to demand.
  • FIG. 1 is a schematic diagram of a structure of a flexible display module in the prior art
  • FIG. 2 is a schematic diagram of a side structure of a flexible display module in the prior art
  • FIG. 3 is a schematic diagram of an expanded structure of a display module in an embodiment of the application.
  • FIG. 4 is a schematic diagram of a top view structure of a display module in an embodiment of the application.
  • FIG. 5 is a schematic diagram of a side structure of a display module in an embodiment of the application.
  • FIG. 6 is a schematic diagram of a structure for splicing display of display modules in an embodiment of the application.
  • FIG. 7 is a schematic diagram of another structure for splicing display of display modules in an embodiment of the application.
  • FIG. 8 is a schematic diagram of another expanded structure of the display module in an embodiment of the application.
  • FIG. 9 is a schematic diagram of a top view structure of a display module in an embodiment of the application.
  • FIG. 10 is a schematic diagram of a partial cross-sectional structure of a display module in an embodiment of the application.
  • FIG. 11 is a schematic diagram of another expanded structure of the display module in an embodiment of the application.
  • FIG. 12 is a schematic diagram of a backside structure of a display module in an embodiment of the application.
  • FIG. 13 is a schematic diagram of another structure for splicing display of display modules in an embodiment of the application.
  • FIG. 14 is a schematic diagram of another expanded structure of the display module in the embodiment of the application.
  • 15 is a schematic diagram of another expanded structure of the display module in the embodiment of the application.
  • 16 is a schematic diagram of a backside structure of a display module in an embodiment of the application.
  • FIG. 17 is a schematic diagram of another expanded structure of the display module in an embodiment of the application.
  • FIG. 18 is a schematic diagram of a backside structure of a display module in an embodiment of the application.
  • FIG. 19 is a schematic diagram of another partial cross-sectional structure of a display module in an embodiment of the application.
  • 20 is a schematic diagram of another expanded structure of the display module in an embodiment of the application.
  • 21 is a schematic diagram of the preparation steps of the display module in the embodiment of the application.
  • FIG. 22 is a schematic diagram of the manufacturing steps of the display module in an embodiment of the application.
  • references described in this specification to "one embodiment” or “some embodiments”, etc. mean that one or more embodiments of the present application include a specific feature, structure, or characteristic described in conjunction with the embodiment. Therefore, the sentences “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in some other embodiments”, etc. appearing in different places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless it is specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.
  • the display module provided by the embodiment of the application can be applied to a display device.
  • the above-mentioned display device can be a common mobile terminal such as a mobile phone, a tablet computer, or an electronic paper book, or other electronic display settings, such as a notebook computer, a television, or a device display screen. Wait.
  • the display module of the above-mentioned display device is flexible and is a flexible display module, specifically, it may be an Active Matrix Organic Light Emitting Display (AMOLED for short).
  • AMOLED Active Matrix Organic Light Emitting Display
  • the display module includes a display area and a non-display area, and it is usually necessary to arrange the driving circuit, the driving chip, the protection structure, and the packaging structure in the non-display area. Therefore, in order to ensure the normal operation of the display module, when the size of the non-display area is reduced to a certain extent, it is difficult to continue to decrease. However, nowadays, the requirement for the screen-to-body ratio of the display device is getting higher and higher, therefore, the proportion of the non-display area to the display screen needs to be further reduced. In the prior art, the side of the non-display area where the driver chip, flexible circuit board and other structures are arranged can be folded to the back side of the display area, so as to reduce the proportion of the non-display area on this side.
  • this application provides a display module and a display device.
  • the application will be further described in detail below with reference to the accompanying drawings.
  • the present application provides a display device.
  • the display module of the display device is shown in Figs. 3 to 5, Fig. 3 shows a schematic top view of a display module, and Fig. 4 shows a display module Figure 5 shows a schematic diagram of the side structure of a display module.
  • the display module includes a display area 1 and a non-display area 2.
  • the display area 2 is a polygonal display area 2.
  • the display area 2 is located on the peripheral side of the display area 1, and the non-display area 2 includes a plurality of non-display portions 21, and the non-display portions 21 correspond to the sides of the display area 1 in a one-to-one manner.
  • the display module may be an Active Matrix Organic Light Emitting Display (AMOLED for short).
  • AMOLED Active Matrix Organic Light Emitting Display
  • the display area 1 occupies most of the area of the display module and is used for displaying images, mainly including pixel circuits and organic light emitting diode arrays, thereby providing device support for the display images.
  • the non-display area 2 around the display area 1 is mainly used for installing driving devices and reliability structures, as well as designing the wiring of the display module, so as to provide driving signals and reliability protection for the display area 1.
  • the non-display portions 21 on the left and right sides of the display module can be designed with an array substrate line driver (Gate Driver on Array, GOA) circuit 3 to realize progressive scanning; the non-display portion 21 at the bottom of the display module can be designed with signal routing 4 and install peripheral driving devices.
  • GOA array Driver on Array
  • the above-mentioned peripheral driving devices may be the driver chip 5 (IC) and the flexible printed circuit (FPC) 6 (Flexible Printed Circuit, referred to as FPC), etc.
  • This area is the Outer Lead Bonding (OLB) area, Achieve column-by-column scanning, so as to realize the display function of the display module.
  • OLB Outer Lead Bonding
  • the plurality of non-display portions 21 of the display module at least two non-display portions 21 are folded to the back side of the display area 1. On the one hand, the number of non-display portions 21 that are folded to the back side of the display area 1 is smaller. It can increase the screen-to-body ratio of the display module.
  • the non-display part 21 is folded to the display area 1, there is no need to consider the problem of reducing the frame, and it can be folded to the non-display on the back side of the display area 1.
  • the part 21 is designed to be wider, so that the design space of the non-display part 21 is not limited.
  • the signal line width, reliability device size and water and oxygen protection path design can be based on the reliability point of view, thereby improving the reliability of the display screen. .
  • the display area 1 of the display module includes four sides, and the display module includes four non-display portions 21, wherein the opposite The two non-display portions 21 are a first non-display portion 211 and a second non-display portion 212 respectively.
  • the first non-display portion 211 and the second non-display portion 212 are folded to the back side of the display area 1.
  • the screen-to-body ratio of the display modules can be increased, and on the other hand, it is also conducive to splicing the display modules to realize joint screen display, such as two joint screens, triple screens or multiple joint screens.
  • Figures 6 and 7 respectively show the spliced display of two display modules and the spliced display of three display modules.
  • the area of the undisplayed area between adjacent display modules is larger. Small, the effect of splicing display is better.
  • Figure 8 shows a schematic diagram of the unfolded structure of the display module
  • Figure 9 shows a schematic diagram of the structure in which the adjacent non-display portion 21 of the display module is folded to the back side of the display area 1.
  • the non-display portion 21 folded to the back side of the display area 1 includes the adjacent non-display portion 21, in order to reduce the mutual pulling force between the adjacent non-display portions 21, reduce the adjacent non-display portion
  • the stress is concentrated between 21, and in the non-display portion 12 that is folded to the back side of the display area 1, an opening 7 is provided between every two adjacent non-display portions 21, that is, between adjacent non-display portions 21
  • There is an unconnected part and the unconnected part is located at the edge area of the non-display area 2, so that when the non-display part 21 is folded to the back side of the display area 1, the pulling force between adjacent non-display parts 21 is relatively high.
  • FIG. 10 shows a schematic diagram of a partial cross-sectional structure of a display module according to an embodiment of the present application.
  • the non-display portion 21 is provided with a signal line 22, and the signal lines 22 of adjacent non-display portions need to be electrically connected.
  • a connection line may be provided between the signal lines 22 of adjacent non-display parts, and the connection line is located on the back side of the display area.
  • the number of sides of the display area 1 of the display module is not limited, and the display area 1 may include four sides, five sides, or six sides, etc., all of which are applicable to the technical solutions of the present application.
  • the above-mentioned non-display portion 21 folded to the back side of the display area 1 may or may not be adjacent to each other.
  • the specific number of non-display parts 21 folded to the back side of the display area 1 is also not specifically limited. When the number of non-display parts 21 folded to the back side of the display area 1 is greater, the screen-to-body ratio of the display module becomes higher.
  • Figure 11 shows a schematic diagram of an expanded structure of the display module
  • Figure 12 shows a schematic diagram of the back structure where all the non-display parts 21 of the display module are folded to the back side of the display area 1 .
  • all the non-display portions 21 of the display module are folded to the back side of the display area 1, and the frameless structure of the display module can be realized, which is beneficial to maximize the screen-to-body ratio and is beneficial to the display module.
  • the group is spliced and displayed from each side, and the splicing effect is better.
  • Figure 13 it is a schematic diagram of a display module splicing structure.
  • the display modules in this scheme are all borderless display modules, so that the splicing phase
  • the size of the non-displayed area between adjacent display modules is small, and the splicing method can be selected according to requirements.
  • the opening 7 is made to extend from the edge of the non-display area 2 away from the display area 1 to the display area 1, and may not extend to the edge of the display area 1, as shown in FIG. 11; it may also extend to the display area 1.
  • Figure 14 to make the adjacent non-display part 21 completely disconnected, and there is no connecting part, so when it is folded to the back side of the display area 1, the adjacent non-display part 21 has no pulling force at all . Since the non-display portion 21 is connected to each side of the display area 1, the opening 7 between the adjacent non-display portions 21 is opposite to the corner area of the display area 1. Therefore, in the embodiment of the present application, in the corner of the display module There will be no stress concentration in the area, which is beneficial to improve the reliability of the display module while realizing the framelessness of the display module.
  • the specific form of the opening 7 is not limited.
  • a gap may be provided between adjacent non-display portions 21, or a notch may be provided between adjacent non-display portions 21.
  • FIG. 14 a schematic diagram of an expanded structure of the display module is shown, which is a schematic diagram of a structure in which a gap is provided between adjacent non-display portions 21.
  • the area of the non-display area 2 is relatively large, so There is more space for wiring and other structural design.
  • the manufacturing process of this solution is relatively simple.
  • the opening 7 is a slit, the specific extending direction of the slit is not limited, and it is only necessary to disconnect the adjacent non-display portion 21 in the corner area.
  • FIG. 15 a schematic diagram of an expanded structure of the display module is shown, which is a schematic diagram of a structure in which notches are provided between adjacent non-display portions 21.
  • adjacent non-display portions 21 can be reduced.
  • the area of the overlapping area after being folded to the back side of the display area 1 improves the reliability of the fixed connection of the non-display portion 21 after being folded, which is beneficial to further improve the reliability of the display module.
  • the specific shape of the notch is not limited, it can be a U-shaped groove, a V-shaped groove, or a rectangular groove, or other shapes. Simplify the production process and other requirements for selection.
  • FIG. 16 shows a schematic diagram of the rear structure of the display module with only one layer of the non-display portion 21 fixed on the back side of the display area 1.
  • the adjacent non-display portions 21 can be folded to the back side of the display area 1 and avoid each other, so that only one layer of the non-display portion 21 can be overlapped with the display area 1. It is also possible that at least two layers of the non-display portion 21 overlap the display area 1.
  • FIG. 17 shows a schematic diagram of the structure of the display module being expanded
  • FIG. 18 shows a schematic diagram of the back structure of the display module with only one layer of non-display part 21 fixed on the back side of the display area 1 of the display module.
  • FIG. 19 respectively show a partial cross-sectional structure diagram of the display module according to an embodiment of the present application.
  • the signal line 22 and the connecting line 11 are specifically made, the signal line 22 can be made in the non-display area 2, and then the connecting line 11 can be made on the back side of the corner area of the display area 1, and then the signal line 22 It is electrically connected to the connecting line 11, so that the adjacent non-display parts 21 can be electrically connected.
  • the opening 7 is provided in the adjacent non-display portion 21, the wiring design for connection can still be performed between the adjacent non-display portions 21.
  • the signal line 22 and the connection line 11 can be arranged in the same layer and be electrically connected.
  • the signal line 22 and the connection line 11 can be arranged in different layers, and the electrical connection is realized by providing a via 8 between the signal line 22 and the connection line 11 to realize the display module Wiring design.
  • the display area 1 includes an effective display area 12 and a dummy pixel area 13 (Dummy pixel area), and the dummy pixel area is located between the effective display area 12 and the non-display portion 21.
  • the pseudo pixel area 13 serves as a buffer area between the effective display area 12 and the non-display area 2 and is displayed in a dark state to avoid display abnormalities in the transition from the display area 1 to the non-display area 2.
  • the connecting line 11 When the connecting line 11 is provided, the connecting line 11 can be provided in the dummy pixel area 13, so that there is no need to provide the connecting line 11 in the effective display area 12, which is beneficial to improve the display effect of the effective display area 12.
  • the dummy pixel area 13 may not be folded to the back side of the display area 1, or may be folded to the back side of the display area 1, or the display module may be folded in the dummy pixel area 13, that is, along the non-display portion 21
  • the dummy pixel area 13 is folded, that is, after the non-display portion 21 is folded, the dummy pixel area 13 is located on the side, so as to ensure that the effective display area 12 of the display area 1 is not affected by the folded structure, and the non-display portion 21 can be completely Fold over to the back side of display area 1.
  • This application also provides a method for manufacturing an AMOLED display module. Please refer to FIG. 21, which specifically includes the following steps:
  • Step S101 preparing a display module substrate; specifically including steps S1011 to S1014, please refer to FIG. 22:
  • Step S1011 design the display area circuit, peripheral drive circuit, OLB layout, reliability device and structure, position and shape of the opening of the substrate;
  • Step S1012 apply the liquid PI material on the glass substrate and cure it into a flexible base at high temperature.
  • the yellow light process prepares a flexible AMOLED array substrate; step S1013, uses a fine mask process to define pixel units and electrodes; step S1014, deposits an organic/inorganic composite layer on the OLED, encapsulates the AMOLED substrate, and completes the preparation of the AMOLED substrate .
  • Step S102 cutting and peeling off the display module substrate
  • the display module substrate is cut and the opening of the non-display area is cut on the substrate by tools such as a laser or a knife wheel, and the heat release glue on the glass substrate is heated by a laser to separate the display module substrate from the glass substrate.
  • Step S103 assembling the display module:
  • Step S104 Fold the non-display part to the back side of the display area.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示模组和显示装置，显示模组包括多边形的显示区（1）和多个非显示部（21），非显示部（21）与显示区（1）的侧边一一对应连接，多个非显示部（21）中，至少两个非显示部（21）翻折至显示区（1）的背侧。当翻折至显示区（1）背侧的非显示部（21）中包含相邻的非显示部（21）时，可以使相邻的两个非显示部（21）之间具有开口（7）。方案便于减少相邻的非显示部（21）之间的拉扯力，将相邻的非显示部（21）翻折至显示区（1）背侧后，可以减少应力集中。具体的，非显示部（21）具有信号线（22），相邻的非显示部（21）的信号线（22）之间通过连接线（11）实现电连接，连接线（11）用于连接位于相邻的非显示部（21）的信号线（22）。方案中，通过在显示区（1）的背侧设置连接线（11），可以使相邻的非显示部（21）的信号线（22）实现电连接，以控制显示模组显示画面。

Description

一种显示模组和显示装置
相关申请的交叉引用
本申请要求在2019年10月15日提交中国专利局、申请号为201910979391.9、申请名称为“一种显示模组和显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示装置技术领域，尤其涉及到一种显示模组和显示装置。
背景技术
柔性显示屏具有轻薄、抗冲击、可卷曲等诸多传统显示屏所不具备的特点，从而可以使得显示装置更轻薄、便携和美观时尚，上述特性为柔性显示屏提供了更为广阔的发展空间。因此，在显示技术领域，柔性显示技术已经得到广泛关注和研究。
如图1所示，示出了现有技术一种柔性显示模组的结构示意图。柔性显示模组一般包括显示区和非显示区，非显示区一般处于屏幕四周，用于安置驱动电路、可靠性防护器件及封装可靠性结构。为了增加屏占比，获得更好的视觉体验，需要进一步减少非显示区面积，也就是会导致非显示区器件和可靠性结构的设计空间减小。非显示区空间的压缩，很可能导致驱动电路的驱动力不足、结构可靠性差，生产良率偏低等风险，因此，显示装置的边框仍然会具有一定的宽度。
如图1和图2所示，图2示出了一种柔性显示模组的侧面结构示意图。柔性显示模组的非显示区设置有信号走线，柔性显示模组第一侧非显示区021设置有驱动器件，例如芯片和柔性电路板等等，该第一侧非显示区021设置有外部连接引线(Outer Lead Bonding，简称OLB)，需要外接驱动信号器件，占据空间较大，通常需要将该第一侧非显示区021及外围器件弯折至显示区背面(COP Bending)，实现柔性显示模组第一侧超窄边框化的有效解决方案。
发明内容
本申请提供了一种显示模组和显示装置，以提高显示模组的屏占比，有利于实现显示模组的无边框化，提高显示模组的可靠性。
第一方面，本申请提供了一种显示模组，该显示模组包括显示区和非显示区，其中，非显示区位于显示区的周侧。显示区为多边形的显示区，包括多个侧边，非显示区包括与上述侧边一一对应连接的非显示部。多个非显示部中，至少两个非显示部翻折至显示区的背侧。由于翻折至显示区背侧的非显示部数量较多，从而可以提高显示模组的屏占比；此外，本方案可以将非显示部设计的较宽，从而可以使非显示部的设计空间不受限制，信号线宽度、可靠性器件尺寸和水氧防护路径设计可以从信赖性角度出发，从而可以提高显示屏的可靠性。当翻折至显示区背侧的非显示部中包含相邻的非显示部时，可以使相邻的两个非显示部之间具有开口，该开口从非显示区远离显示区的边缘向显示区延伸。该方案便 于减少相邻的非显示部之间的拉扯力，将相邻的非显示部翻折至显示区背侧后，可以减少应力集中，从而可以使显示模组在提高屏占比，或者实现无边框化的同时，具有较好的连接可靠性。本申请实施例中的非显示部具有信号线，相邻的非显示部的信号线之间通过连接线实现电连接，上述连接线用于连接位于相邻的非显示部的信号线。该方案中，由于非显示部与显示区的各个侧边一一对应，相邻的给显示部之间具有开口，则该开口与显示区的拐角区域相对，而用于连接相邻的非显示部之间的信号线的连接线，可以设置于显示区的拐角区域，以控制显示模组显示画面。
在具体设置显示模组时，可以使显示区包括有效显示区和伪像素区，其中，伪像素区位于有效显示区和非显示部之间，伪像素区作为有效显示区与非显示区的缓冲区，以暗态形式显示，避免显示区向非显示区过渡发生显示异常。
在具体设置上述连接线时，可以使连接线位于上述伪像素区的背侧，从而连接线无需制作与有效显示区的背侧，有利于提高有效显示区的显示效果。
当翻折非显示部时，可以使非显示部沿伪像素翻折，从而可以使有效显示区具有较好的显示效果，边缘区域不易出现变形等缺陷。
具体设置上述信号线和连接线时，信号线和连接线的连接方式不限，可以使信号线和连接线同层设置，且直接连接信号线和连接线。也可以使信号线和连接线不同层设置，在显示区或者非显示部设置过孔，信号线和连接线通过过孔连接。
在具体设置显示模组时，可以使所有非显示部均翻折至显示区的背侧。从而实现显示模组的无边框化，有利于实现显示模组的联屏显示。此外，由于相邻的非显示部之间具有开口，因此，在显示模组的拐角区域不易出现应力集中的情况，显示模组的可靠性较高。
在具体设置上述开口时，开口的形状不做具体限制，该开口可以为缝隙或者槽口，当开口为缝隙时，缝隙的具体延伸方向不做限制，只需在拐角区域，使相邻的非显示部断开。当开口为槽口时，槽口的具体形状不限，可以为U型槽、V型槽或者矩形槽，或者为其它形状的槽口，用户可以根据线路布局或者简化制作工艺等需求进行选择。
在具体设置开口的结构时，可以使显示区与一层非显示部叠置，即翻折后的非显示部之间不存在相交叠的区域。该方案可以进一步的减少相邻的非显示部之间的应力，提高显示模组的可靠性。
第二方面，本申请还提供了一种显示装置，该显示装置包括上述任一技术方案中的显示模组，该显示装置的屏占比较高，可靠性较好，且有利于实现无边框结构。
具体的，上述显示装置可以包括至少两个显示模组，由于上述显示模组至少两个非显示部翻折至显示区背侧，从而有利于实现显示模组的拼接，因此，该显示装置的显示模组拼接显示，有利于根据需求增大显示面积。
附图说明
图1为现有技术中柔性显示模组的一种结构示意图；
图2为现有技术中柔性显示模组的一种侧面结构示意图；
图3为本申请实施例中显示模组的一种展开结构示意图；
图4为本申请实施例中显示模组的一种俯视结构示意图；
图5为本申请实施例中显示模组的一种侧面结构示意图；
图6为本申请实施例中显示模组拼接显示的一种结构示意图；
图7为本申请实施例中显示模组拼接显示的另一种结构示意图；
图8为本申请实施例中显示模组的另一种展开结构示意图；
图9为本申请实施例中显示模组的一种俯视结构示意图；
图10为本申请实施例中显示模组的一种局部剖面结构示意图；
图11为本申请实施例中显示模组的另一种展开结构示意图；
图12为本申请实施例中显示模组的一种背侧结构示意图；
图13为本申请实施例中显示模组拼接显示的另一种结构示意图；
图14为本申请实施例中显示模组的另一种展开结构示意图；
图15为本申请实施例中显示模组的另一种展开结构示意图；
图16为本申请实施例中显示模组的一种背侧结构示意图；
图17为本申请实施例中显示模组的另一种展开结构示意图；
图18为本申请实施例中显示模组的一种背侧结构示意图；
图19为本申请实施例中显示模组的另一种局部剖面结构示意图；
图20为本申请实施例中显示模组的另一种展开结构示意图；
图21为本申请实施例中显示模组的制备步骤示意图；
图22为本申请实施例中显示模组的制备步骤示意图。
附图标记：
现有技术部分：
01-显示区；                              02-非显示区；
021-第一侧非显示区；                     03-信号走线；
04-芯片；                                05-柔性电路板；
本申请部分：
1-显示区；                               11-连接线；
12-有效显示区；                          13-伪像素区；
2-非显示区；                             21-非显示部；
211-第一非显示部；                       212-第二非显示部；
22-信号线；                              3-阵列基板行驱动电路；
4-信号走线；                             5-驱动芯片；
6-柔性电路板；                           7-开口；
8-过孔。
具体实施方式
以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所 有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
本申请实施例提供的显示模组可以应用于显示装置，上述显示装置可以为手机、平板电脑或者电纸书等常见的移动终端，或者其它电子显示设置，如笔记本电脑、电视机或者设备显示屏等。上述显示装置的显示模组具有柔性，为柔性显示模组，具体可以为有源矩阵有机电致发光二极管(Active Matrix Organic Light Emitting Display，简称AMOLED)。
显示模组包括显示区和非显示区，通常需要将驱动电路、驱动芯片以及防护结构以及封装结构设置于非显示区。因此，为了保证显示模组的正常工作，当非显示区的尺寸减小到一定程度后，就难以继续减小。但是现在对显示装置的屏占比的要求越来越高，因此，对非显示区占显示屏的比例需要进一步的减少。现有技术中，可以将非显示区设置有驱动芯片和柔性电路板等结构的一侧翻折至显示区的背侧，以减少该侧非显示区的占比。以显示模组为矩形显示模组为例，将一侧翻折后，其余三侧还会占用一定的屏幕面积。为提高显示模组的屏占比，本申请提供了一种显示模组及显示装置。为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。
本申请提供了一种显示装置，该显示装置的显示模组如图3-图5所示，图3示出了一种显示模组的俯视结构示意图，图4示出了一种显示模组翻折后的俯视结构示意图，图5示出了一种显示模组的侧面结构示意图，该显示模组包括显示区1和非显示区2，其中，显示区2为多边形的显示区2，非显示区2位于显示区1的周侧，非显示区2包括多个非显示部21，,非显示部21与显示区1的侧边一一对应。该显示模组可以为有源矩阵有机电致发光二极管(Active Matrix Organic Light Emitting Display，简称AMOLED)。其中，显示区1占据显示模组的大部分面积，用于显示画面，主要包括像素电路和有机发光二极管阵列，从而为显示画面提供器件支撑。显示区1四周的非显示区2主要用于安装驱动器件和可靠性结构，以及设计显示模组的走线，从而为显示区1提供驱动信号和可靠性防护。显示模组的左右两侧的非显示部21可以设计阵列基板行驱动(Gate Driver on Array，简称GOA)电路3，实现逐行扫描；在显示模组底部的非显示部21可以设计信号走线4及安装外围驱动器件，上述外围驱动器件可以为驱动芯片5(IC)和柔性电路板6(Flexible Printed Circuit，简称FPC)等，该区域为外部引线连接(Outer Lead Bonding，简称OLB)区域，实现逐列扫描，从而实现显示模组的显示功能。该显示模组的多个非显示部21中，至少两个非显示部21翻折至显示区1的背侧，一方面，由于翻折至显示区1背侧的非显示部21的数量较多，可以提高显示模组的屏占比；另一方面，由于非显示部21翻折至显示区1，从而无需考虑减小边框的问题，可以将翻折至显示区1背侧的非显示部21设计的较宽，从而可以使非显示部21的设计空间不受限制，信号线宽度、可靠性器件尺寸和水氧防护路径设计可以从信赖性角度出发，从而可以提高显示屏的可靠性。
如图3和图4所示，以显示模组为矩形显示模组为例，该显示模组的显示区1包括四个侧边，显示模组包括四个非显示部21，其中，相对的两个非显示部21分别为第一非显示部211和第二非显示部212，上述第一非显示部211和第二非显示部212翻折至显示区1背侧。该方案中，一方面可以提高显示模组的屏占比，另一方面，还有利于进行显示模组拼接，实现联屏显示，例如两联屏、三联屏或者多联屏。如图6和图7所示，图6和图7分别示出了两个显示模组拼接显示和三个显示模组拼接显示的情况，相邻的显示模组之间未显示的区域面积较小，拼接显示的效果较好。
请参考图8和图9，图8示出了显示模组的展开结构示意图，图9示出了显示模组相邻的非显示部21翻折至显示区1的背侧的结构示意图，当翻折至显示区1背侧的非显示部21中，包括相邻的非显示部21时，为了减小相邻的非显示部21之间的相互拉扯的拉力，减少相邻的非显示部21之间应力集中，可以在翻折至显示区1的背侧的非显示部12中，每相邻的两个非显示部21之间设置开口7，即相邻的非显示部21之间具有未连接的部分，且该未连接的部分位于非显示区2的边缘区域，从而将非显示部21翻折至显示区1背侧时，相邻的非显示部21之间的拉扯力较小，不易造成应力集中，从而有利于提高显示模组的可靠性。请参考图10，示出了本申请实施例显示模组的部分剖面结构示意图，通常，非显示部21会设置信号线22，且相邻的非显示部的信号线22需要进行电连接，具体可以在相邻的非显示部的信号线22之间设置连接线，该连接线位于显示区的背侧。
具体的实施例中，显示模组的显示区1的侧边数量不做限制，显示区1可以包括四个侧边、五个侧边或者六个侧边等，均适用本申请的技术方案。上述翻折至显示区1背侧的非显示部21可以相邻也可以不相邻。翻折至显示区1背侧的非显示部21的具体数量也不做具体限制，当翻折至显示区1背侧的非显示部21数量越多时，显示模组的屏占比越高。
请参考图11和图12，图11示出了显示模组的一种展开结构示意图，图12示出了显示模组的所有非显示部21均翻折至显示区1背侧的背面结构示意图。该方案中，显示模组的所有非显示部21均翻折至显示区1的背侧，则可以实现显示模组的无边框结构，从而有利于使屏占比最大化，且有利于显示模组从各个侧边进行拼接显示且拼接效果较好，如图13所示，为一种显示模组拼接的结构示意图，该方案中的显示模组均为无边框显示模组，从而拼接后相邻的显示模组之间的未显示区域尺寸较小，且可以根据需求选择拼接方式。
在具体设置上述开口7时，使开口7从非显示区2远离显示区1的边缘向显示区1延伸，可以未延伸至显示区1边缘，如图11所示；也可以延伸至显示区1的边缘，请参考图14，使相邻的非显示部21完全断开，不存在连接的部分，从而翻折至显示区1的背侧时，相邻的非显示部21完全不存在拉扯力。由于非显示部21与显示区1的各个侧边相连，从而相邻的非显示部21之间的开口7与显示区1的拐角区域相对，从而本申请实施例中，在显示模组的拐角区域不会出现应力集中，有利于在实现显示模组无边框化的同时，提高显示模组的可靠性。
具体设置上述开口7时，开口7的具体形式不做限制，可以在相邻的非显示部21之间设置缝隙，也可以在相邻的非显示部21之间设置槽口。如图14所示，示出了显示模组的一种展开结构示意图，为在相邻的非显示部21之间设置缝隙的结构示意图，该方案中，非显示区2的面积较大，从而具有较多的空间进行布线以及其他结构的设计，此外，该方案的制作工艺较为简单。当开口7为缝隙时，缝隙的具体延伸方向不做限制，只需在拐角区域，使相邻的非显示部21断开。如图15所示，示出了显示模组的一种展开结构示意图，为在相邻的非显示部21之间设置槽口的结构示意图，该方案中，可以减少相邻的非显示部21翻折至显示区1背侧后交叠区域的面积，提高非显示部21翻折后固定连接的可靠性，有利于进一步的提高显示模组的可靠性。
当上述开口7为槽口时，槽口的具体形状不限，可以为U型槽、V型槽或者矩形槽，或者为其它形状的槽口，本申请不做限制，用户可以根据线路布局或者简化制作工艺等需求进行选择。
请参考图15和图16，图16示出了显示模组的显示区1背侧仅固定一层非显示部21的背面结构示意图。该方案中，可以通过合理设计开口7的形状，使相邻的非显示部21翻折至显示区1背侧后，相互避让，可以使仅一层非显示部21与显示区1叠置，还可以是至少两层非显示部21与显示区1叠置。其中，当显示模组仅一层非显示部21与显示区1叠置，即翻折至显示区1背侧的非显示部21之间无交叠，则可以减少翻折后非显示部21之间的干扰，从而提高显示模组的可靠性。请参考图17和图18，图17示出了显示模组展开的结构示意图，图18示出了显示模组的显示区1背侧仅固定一层非显示部21的背面结构示意图。
请参考图19，分别示出了本申请实施例显示模组的部分剖面结构示意图。本申请实施例中，在具体制作信号线22和连接线11时，可以在非显示区2制作信号线22，再在显示区1的拐角区域的背侧制作连接线11，再将信号线22和连接线11电连接，从而可以使相邻的非显示部21之间实现电连接。本申请实施例中，虽然在相邻的非显示部21设置有开口7，但是相邻的非显示部21之间仍然可以进行连接的走线设计。
请参考图19，在具体实现信号线22和连接线11的连接时，可以使信号线22和连接线11同层设置并实现电连接。请参考图17，在另一种实施例中，可以使信号线22与连接线11不同层设置，通过在信号线22与连接线11之间设置过孔8实现电连接，以实现显示模组的布线设计。
请参考图20，示出了显示模组一种展开结构示意图。本申请实施例中，显示区1包括有效显示区12和伪像素区13(Dummy像素区)，上述伪像素区位于有效显示区12与非显示部21之间。伪像素区13作为有效显示区12与非显示区2的缓冲区，以暗态形式显示，避免显示区1向非显示区2过渡发生显示异常。
设置连接线11时，可以在伪像素区13设置连接线11，从而无需在有效显示区12设置连接线11，有利于提高有效显示区12的显示效果。
当然，该伪像素区13可以不翻折至显示区1的背侧，也可以翻折至显示区1的背侧，或者显示模组在伪像素区13进行翻折，即非显示部21沿伪像素区13翻折，也即非显示部21翻折后，伪像素区13位于侧面，从而可以保证显示区1的有效显示区12未受到翻折结构的影响，且非显示部21可以完全翻折至显示区1的背侧。
本申请还提供了一种AMOLED显示模组的制备方法，请参考图21，具体包括以下步骤：
步骤S101，制备显示模组基板；具体包括步骤S1011～步骤S1014，请参考图22：
步骤S1011，设计基板的显示区电路、外围驱动电路、OLB布局、可靠性器件和结构、开口的位置及形状；步骤S1012，将液态PI材料涂布在玻璃衬底上高温固化成柔性基底，通过黄光工艺制备出柔性的AMOLED阵列基板；步骤S1013，采用精细掩模版工艺定义像素单元和电极；步骤S1014，在OLED上用沉积有机/无机复合层，对AMOLED基板进行封装，完成AMOLED基板的制备。
步骤S102，切割和剥离显示模组基板；
通过激光或刀轮等工具对基板进行显示模组基板切割和非显示区的开口切割，使用激光加热玻璃衬底上热释放胶，将显示模组基板与玻璃衬底分离。
步骤S103，组装显示模组：
在显示模组基板出光面的一侧完成偏光片、触摸屏等膜层的贴合，经过OLB工程， 将IC及FPC的连接脚与基板的端子做脚对脚结合，再完成强化背板及表面盖板的组装。
步骤S104，将非显示部翻折至显示区背侧。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种显示模组，其特征在于，包括多边形的显示区和与所述显示区的侧边一一对应的非显示部，至少两个所述非显示部翻折至所述显示区的背侧；
    当翻折至所述显示区背侧的非显示部中包含相邻的所述非显示部时，每相邻的两个所述非显示部之间具有开口，且相邻的所述非显示部的信号线之间具有连接线，所述连接线位于所述显示区的背侧。
  2. 根据权利要求1所述的显示模组，其特征在于，所述显示区包括有效显示区和伪像素区，所述伪像素区位于所述有效显示区与所述非显示部之间。
  3. 根据权利要求2所述的显示模组，其特征在于，所述连接线设置于所述伪像素区的背侧。
  4. 根据权利要求2所述的显示模组，其特征在于，所述非显示部沿所述伪像素区翻折至所述显示区的背侧。
  5. 根据权利要求1所述的显示模组，其特征在于，所述非显示部中具有的信号线与显示区背侧设置的连接线不同层、且信号线与所述连接线之间通过过孔连接。
  6. 根据权利要求1所述的显示模组，其特征在于，所述非显示部均翻折至所述显示区的背侧。
  7. 根据权利要求1所述的显示模组，其特征在于，所述开口包括缝隙或者槽口。
  8. 根据权利要求1所述的显示模组，其特征在于，翻折至所述显示区背侧的所述非显示部之间无交叠。
  9. 一种显示装置，其特征在于，包括如权利要求1～8任一项所述的显示模组。
  10. 根据权利要求9所述的显示装置，其特征在于，包括至少两个显示模组，所述至少两个显示模组拼接显示。
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