WO2020253752A1 - 显示装置及电磁激励器 - Google Patents
显示装置及电磁激励器 Download PDFInfo
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- WO2020253752A1 WO2020253752A1 PCT/CN2020/096671 CN2020096671W WO2020253752A1 WO 2020253752 A1 WO2020253752 A1 WO 2020253752A1 CN 2020096671 W CN2020096671 W CN 2020096671W WO 2020253752 A1 WO2020253752 A1 WO 2020253752A1
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- display device
- electromagnetic exciter
- area
- skin
- electromagnetic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/066—Loudspeakers using the principle of inertia
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/027—Diaphragms comprising metallic materials
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
- H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
Definitions
- the present disclosure relates to electronic technology, in particular to a display device and an electromagnetic exciter.
- the present disclosure provides a display device and an electromagnetic exciter, which can improve the discrimination of the sound channel when the display device emits sound under the action of electromagnetic exciters corresponding to different sound channels, thereby improving users of electronic equipment with the display device and the electromagnetic exciter Experience.
- a first aspect of the present disclosure provides a display device, including:
- Display structure sounding substrate, at least one electromagnetic exciter and stabilizer
- the stabilizer includes: a bracket and a plurality of A sheet-shaped elastic foot extending away from the support, wherein the support is used for accommodating the first electromagnetic exciter of the at least one electromagnetic exciter, and the plurality of elastic legs are used for holding the first electromagnetic exciter The position of the exciter is stable.
- a second aspect of the present disclosure provides an electromagnetic exciter, including a stabilizer, the stabilizer includes a bracket and a plurality of sheet-shaped elastic feet extending away from the bracket, wherein the bracket is used to accommodate the electromagnetic exciter , The plurality of elastic feet are used to keep the position of the electromagnetic exciter stable.
- FIG. 3 is a schematic cross-sectional structure diagram of a display device
- FIG. 6 is a schematic diagram of a cross-sectional structure of a display device according to an embodiment of the present disclosure
- FIG. 7 is a schematic diagram of a disassembled structure of a display device according to an embodiment of the present disclosure.
- FIG. 9 is a schematic diagram of the bonding structure of the intermediate layer, the first skin and the second skin of the sounding substrate according to an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of a cross-sectional structure of an intermediate layer of a sounding substrate according to an embodiment of the present disclosure
- FIG. 11 is a schematic structural diagram of a first skin and a second skin of a sounding substrate according to an embodiment of the present disclosure
- FIG. 12 is a schematic structural diagram of an electronic device with a display device according to an embodiment of the present disclosure.
- FIG. 13 is a schematic diagram of the amplitude attenuation law of the display device according to the embodiment of the present disclosure when conducting bending waves;
- FIG. 14 is a schematic diagram of the structure of an intermediate layer of a sounding substrate according to an embodiment of the present disclosure
- FIG. 15 is a schematic structural diagram of an intermediate layer of a sounding substrate according to another embodiment of the present disclosure.
- Fig. 16 is a schematic sectional view of the stabilizer after installation according to an embodiment of the present disclosure.
- 17 is a schematic diagram of the installation structure of the stabilizer and the electromagnetic exciter according to the embodiment of the present disclosure
- FIG. 18 is a schematic structural diagram of a stabilizer of another structure according to an embodiment of the present disclosure.
- FIG. 19 is a schematic cross-sectional structure diagram of a supporting mechanism according to an embodiment of the present disclosure.
- FIG. 20 is a schematic cross-sectional structure diagram of a supporting mechanism according to another embodiment of the present disclosure.
- Figure 21 is a schematic structural diagram of a supporting mechanism according to another embodiment of the present disclosure.
- 22 is a schematic structural diagram of an implementation manner of a display device according to an embodiment of the present disclosure.
- FIG. 23 is a schematic diagram of a disassembled structure of an implementation of a display device according to an embodiment of the present disclosure.
- 24 is a schematic structural diagram of an implementation manner of a display device according to another embodiment of the present disclosure.
- Fig. 25 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
- FIG. 2 is a schematic structural diagram of another electronic device with a speaker.
- the electronic device takes a laser projection TV as an example.
- the laser projection TV 21 can project a laser beam onto a display screen 22 for users to watch.
- the video screen can also provide a sound signal to the connected external speaker 23, so that the speaker 23 can play audio.
- the speaker 23 since the speaker 23 needs to be independently arranged, the speaker 23 can achieve more sound effects through a larger volume, and accordingly, the speaker 23 of the electronic device needs to occupy more external space.
- the area of the sounding substrate 32 can be set to be equal to the area of the optical film 31 at most, the larger the area of the sounding substrate, the better the sound effects such as heavy bass, which can make the display device have better playback performance. .
- the sounding substrate 32 generates a bending wave under the action of the electromagnetic exciter 33, and the bending wave spreads around the area where the electromagnetic exciter 33 and the sounding substrate 32 are attached as the center, and covers the entire sounding substrate 32.
- the darker the color on the sounding substrate 32 the greater the amplitude of the bending wave at the position above the display device; the lighter the color, the deeper the amplitude of the bending wave at the position below the display device. The greater the amplitude.
- the frequency of bending wave A in Figure 5 is 200 Hz
- the frequency of bending wave B is 1000 Hz
- the frequency of bending wave C is 10000 Hz. It can be seen that no matter how the frequency of the bending wave changes, when the bending wave spreads in the sounding substrate, The amplitudes in all directions are not attenuated much. Even at the rightmost position far from the electromagnetic exciter 33 in the figure, the amplitude of the bending wave is basically the same as the amplitude near the electromagnetic exciter 33.
- the flexural wave generated by the sounding substrate 32 under the action of the electromagnetic exciter 33 has a more uniform amplitude distribution at all positions when propagating in the sounding substrate 32, resulting in the sounding substrate 32 as a whole emit sounds with relatively similar intensity, making the user listen
- the intuitive feeling is that all positions of the entire screen are emitting similar sounds, and it is impossible to distinguish the channels corresponding to different electromagnetic exciters, which leads to the sound channels of the display device.
- the distinction of is poor, which affects the user experience of electronic devices.
- FIGS. 6 and 7 are schematic diagrams of a cross-sectional structure of a display device according to an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of a disassembled structure of the display device according to an embodiment of the present disclosure.
- the display device is a laser TV as an example for description, but is not limited thereto.
- the display device provided by the embodiment of the present disclosure includes: a display structure 31, a sounding substrate 32 and at least one electromagnetic exciter 33. Wherein, the display structure 31 and the sounding substrate 32 are attached to one side, and at least one electromagnetic exciter 33 is attached to the other side of the sounding substrate 32.
- the surface area of the sounding substrate 32 is equal to or smaller than the surface area of the display structure 31.
- the display structure 31 of the display device is used to realize the display function of the display device, and is used to receive and display light signals.
- the display structure 31 provided by the embodiments of the present disclosure includes, but is not limited to: Liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED), laser projection hard screen, image display film or touch control function
- the diaphragm, the image display diaphragm includes, but is not limited to, a diaphragm with optical microstructures such as Fresnel, bar grid, or microlens array.
- the display structure is a rectangular structure as an example for description. In other embodiments, other structures may be adopted, for example, the display structure may also be an arc structure.
- the display structure 31, the sounding substrate 32 and the at least one electromagnetic exciter 33 of the display device are jointly used to realize the sounding function of the display device.
- at least one electromagnetic exciter 33 includes two electromagnetic exciters, and the two electromagnetic exciters are: a first electromagnetic exciter 331 and a second electromagnetic exciter 332.
- more electromagnetic exciters may be included, and their implementation principles are similar, and will not be repeated.
- the electromagnetic exciter 331 is used to receive an electric signal corresponding to the sound to be played, and after converting the electric signal into mechanical vibration, the mechanical vibration is applied to the sounding substrate 32.
- the sounding substrate 32 generates a bending wave through modal resonance under the action of the mechanical vibration of the electromagnetic exciter 331, and the bending wave spreads in a 360-degree range around the place where the electromagnetic exciter 331 and the sounding substrate 32 are attached as the center.
- the sounding substrate 32 and the display structure 31 to which the sounding substrate 32 is bonded are reciprocated in the vertical direction of the cross-sectional view of the display device shown in FIG. 6 under the action of the bending wave propagating in the sounding substrate 32 to realize sound.
- the sounding substrate 32 provided by the embodiment of the present disclosure conducts bending waves in a 360-degree direction around the place where the electromagnetic exciter 331 and the sounding substrate 32 are attached as the center.
- the amplitude of the sounding substrate 32 to the bending wave in the first direction is
- the attenuation law is different from the amplitude attenuation law of the bending wave caused by the acoustic substrate 32 in the second direction.
- the attenuation law may be the magnitude change mode of amplitude attenuation.
- the material of the sounding substrate 32 can be set in the embodiments of the present disclosure, so that the sounding substrate 32 conducts bending waves in the first direction.
- the performance is different from the conduction performance of the sounding substrate for bending waves in the second direction. That is, the sounding substrate 32 provided by the embodiment of the present disclosure has a specific orthogonal and/or partitioned strength anisotropy mechanical structure and conduction performance.
- the sounding substrate provided by the embodiment of the present disclosure includes: a first skin 321, an intermediate layer 322 and a second skin 323.
- the first skin 321 and the second skin 323 are respectively attached to the two sides of the middle layer 322, and the surface areas of the first skin 321, the middle layer 322 and the second skin 323 are the same; in some implementations
- the first skin 321 and the second skin 323 may cover at least part of the intermediate layer 322.
- FIG. 8 is a schematic structural diagram of an intermediate layer of a sounding substrate according to an embodiment of the present disclosure.
- the middle layer of a sounding substrate 32 provided by an embodiment of the present disclosure is connected by a plurality of honeycomb cores 3221 arranged in a hexagonal shape. Except for the honeycomb cores located around the structure, the sides corresponding to the six sides of each honeycomb core 3221 are respectively connected to the corresponding side surfaces of the other six honeycomb cores.
- FIG. 9 is a schematic diagram of the bonding structure of the intermediate layer, the first skin, and the second skin of the sounding substrate according to an embodiment of the present disclosure. As shown in FIG.
- the honeycomb included in the intermediate layer 322 The cross section of the core 3221 is perpendicular to the first skin 321 and the second skin 323.
- the intermediate layer including the honeycomb core is parallel to the y direction by arranging the two parallel sides of the hexagonal honeycomb core wall, and the honeycomb core wall does not have parallel sides in the x direction, so that the sounding substrate has Different conductivity.
- the hexagonal stretch ratio of the cross section of the honeycomb core 3221 By adjusting the hexagonal stretch ratio of the cross section of the honeycomb core 3221, the conductivity in different directions is different.
- 10 is a schematic diagram of a cross-sectional structure of an intermediate layer of a sounding substrate according to an embodiment of the present disclosure.
- the stretch ratio of the hexagonal section of the honeycomb core in the x-y direction is d/L.
- the first direction is the y direction in the figure
- the second direction is the x direction in the figure
- d is the unit length of each honeycomb core in the x direction when multiple hexagonal honeycomb cores are arranged in sequence
- the unit length d Refers to: the smallest unit of length in the x direction after multiple hexagonal honeycomb cores are arranged in sequence, that is, multiple hexagonal honeycomb cores are repeatedly arranged in the x direction according to the law of unit length d; in Figure 10, the unit length d is hexagonal The shortest distance between side 3 and side 6 perpendicular to the x-axis; L is the unit length of each honeycomb core in the y direction when multiple hexagonal honeycomb cores are arranged in sequence.
- the unit length L refers to: multiple hexagons The smallest unit of length in the y direction after the honeycomb cores are arranged in sequence, that is, multiple hexagonal honeycomb cores are repeatedly arranged in the y direction according to the law of the unit length L; in Figure 10, the unit length L is the hexagonal sides 1, 6, 5 And 7 the sum of the distance in the y direction.
- the stretch ratio in the x-y direction is 0.58:1.
- all the honeycomb cores in the middle layer of the sounding substrate can be performed at a preset stretching ratio in the x direction of the hexagonal cross section. Stretching, wherein the preset stretch ratio is less than a preset threshold of 0.58:1.
- an isolation region can also be provided in the middle layer of the sounding substrate, so that the first electromagnetic exciter and the second electromagnetic exciter respectively generate and conduct bending waves by exciting the regions on both sides of the isolation region.
- an embodiment of the present disclosure also provides a stabilizer for supporting the electromagnetic exciter to prevent the electromagnetic exciter from deviating from the maximum Optimal working area, reducing the torsion movement of the electromagnetic exciter in different directions due to vibration, thereby reducing the distortion of the sound emitted by the display device under the action of the electromagnetic exciter.
- FIG. 16 is a schematic cross-sectional structure diagram of the stabilizer according to an embodiment of the present disclosure after installation
- FIG. 17 is a schematic diagram of the installation structure of the stabilizer and the electromagnetic exciter according to the embodiment of the present disclosure.
- the stabilizer 7 provided by the embodiment of the present disclosure includes a bracket 72 and a plurality of sheet-shaped elastic feet 71 extending away from the bracket 72.
- each leg 71 extends in a direction away from the bracket 72, and the leg 71 is distributed on the circumference of a first circle (not shown in FIGS. 17 and 18), and the center of the first circle is located on the axis of the bracket 72 (FIG. 17 and FIG. 18 are not marked), the first circle can be any circle whose center is on the axis of the bracket 72.
- the bracket 72 has a first fixing position (not shown in FIGS. 17 and 18).
- the axis of the first fixing position can be collinear with the axis of the bracket 72.
- the vibration output end of the electromagnetic exciter 331 passes through the first fixing position of the bracket 72.
- the fixed position abuts against the sounding substrate 32.
- the structure of the stabilizer may be referred to as a "Spider structure" due to its outwardly extending legs.
- the bracket 72 of the stabilizer has a cavity whose shape matches that of the electromagnetic exciter 331 for accommodating and fixing the electromagnetic exciter.
- the shape of the cavity is circular; when the electromagnetic exciter 331 is elliptical, the shape of the cavity is elliptical.
- the stabilizer 7 also includes at least one damping block 8.
- the first damping block of the at least one damping block 8 is provided at one end of the first leg of the plurality of legs 71, and the number of the at least one damping block 8 is less than or equal to the number of the legs 71 ,
- the damping block 8 is fixedly connected to the sounding base plate 32.
- the leg 71 may be configured to extend in the circumferential direction of the stabilizer 7 (that is, to extend away from the center of the stabilizer 7), or the leg 71 may be configured to extend in a direction away from the axis of the stabilizer 7 (also That is, the feet 71 can extend radially).
- the four legs 71 of the stabilizer 7 as shown in FIG. 17 are respectively fixed on the second skin 323 of the sounding base plate 32 by a damping block 8.
- the stabilizer can jointly form a mechanical low-pass filter position stabilizer for vibration from the flat plate, and each fulcrum of the elastic feet of the position stabilizer receives bending waves.
- the different random vibrations are maintained in a stable state after being filtered by a mechanical low-pass filter, thereby maintaining the stability of the electromagnetic exciter 331 in the bracket 72.
- Figure 18 is a schematic structural diagram of a stabilizer of other structures according to an embodiment of the present disclosure.
- Figure 18 shows a stabilizer of several other structures.
- the stabilizer can have 3 or 4 legs, and the legs can move away from the support.
- Orbital extension or radial extension Its implementation and principle are the same as those of the stabilizer shown in Fig. 17, and will not be repeated here.
- the display device sets a number of electromagnetic exciters a, b, c, d, e, and f with different excitation frequencies according to the playback performance requirements that the electronic device needs to meet to pass different electromagnetic exciters.
- the acoustic substrate is excited to generate bending waves with different resonance frequencies, thereby broadening the frequency response of the display device.
- each electromagnetic exciter as shown in the figure is mounted on the sounding substrate 32 through a stabilizer 7.
- FIG. 22 and FIG. 23 are only exemplary descriptions of the display device in an implementation manner.
- the installation methods and position setting methods of different numbers of electromagnetic exciters are all within the protection scope of the present disclosure.
- FIG. 24 is a schematic structural diagram of an implementation of a display device according to an embodiment of the present disclosure, which shows the arrangement and intensity direction of the electromagnetic exciter, the frame structure, and the buffer in the electronic device with the display device.
- the left and right channels each correspond to two electromagnetic exciters, and the two electromagnetic exciters are arranged on the same supporting structure; in schematic B, the left and right channels Each channel corresponds to two electromagnetic exciters, and the two electromagnetic exciters are arranged in the same back cover and buffer component; in diagram C, the left and right channels each correspond to three electromagnetic exciters, and three electromagnetic exciters Only one electromagnetic exciter is installed on the supporting structure; in diagram D, the left and right channels each correspond to three electromagnetic exciters, and two of the three electromagnetic exciters are arranged on the same rear Among the cover and the buffer part, another electromagnetic exciter is arranged in a back cover and the buffer part.
- FIG. 25 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
- an electronic device 20 provided by an embodiment of the present disclosure includes: a display device 2001 as described in any of the embodiments in FIGS. 6-24 .
- the electronic devices include but are not limited to the following devices: mobile phones, tablet computers, desktop computers, televisions, and other electrical appliances with display screens, such as washing machines, refrigerators, etc.
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- Electromagnetism (AREA)
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Abstract
本公开提供一种显示装置及电磁激励器,显示装置包括显示结构、发声基板、至少一个电磁激励器和稳定器;其中,发声基板的一面和显示结构贴合设置,电磁激励器通过稳定器固定贴合在发声基板的另一面;稳定器包括:支架和多个向远离所述支架方向延伸的弹性支脚。通过稳定器将电磁激励器固定设置在发声基板上,并且支架容纳电磁激励器,当电磁激励器在振动的过程中,支脚能够保持电磁激励器的位置稳定,避免长时间工作状态下电磁激励器的位置偏移。
Description
交叉引用
本申请要求于2019年6月17日提交中国专利局的、申请号为201910523147.1、申请名称为“显示装置及电磁激励器”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。
本公开涉及电子技术,尤其涉及一种显示装置及电磁激励器。
随着电子技术的不断发展以及客户需求的不断提高,电子设备不断向大尺寸、轻薄化的方向发展。电子设备,例如手机、平板电脑、电视等,需要在内部设置扬声器等发声装置的同时保证整体更加轻薄。由于受到电子设备内部空间的局限,留给扬声器的安装位置空间较小,使得电子设备中安装的扬声器通常仅能满足普通的播放功能,不能实现更多的重低音等音效效果,导致了扬声器的播放性能较差。
发明内容
本公开提供一种显示装置及电磁激励器,能够提高显示装置在不同声道对应的电磁激励器作用下发声时对于声道的区分度,进而提高具有显示装置及电磁激励器的电子设备的用户体验。
本公开第一方面提供一种显示装置,包括:
显示结构、发声基板、至少一个电磁激励器和稳定器;
其中,所述发声基板的一面和所述显示结构贴合设置,所述至少一个电磁激励器通过所述稳定器固定贴合在所述发声基板的另一面;所述稳定器包括:支架和多个向远离所述支架方向延伸的片状弹性支脚,其中所述支架用于容纳所述至少一个电磁激励器中的第一电磁激励器,多个所述弹性支脚用于保持所述第一电磁激励器的位置稳定。
本公开第二方面提供一种电磁激励器,包括稳定器,所述稳定器包括支架和多个向远离所述支架方向延伸的片状弹性支脚,其中所述支架用于容纳所述电磁激励器,多个所述弹性支脚用于保持所述电磁激励器的位置稳定。
为了更清楚地说明本公开实施例或相关技术中的技术方案,下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为一种具有扬声器的电子设备的结构示意图;
图2为另一种具有扬声器的电子设备的结构示意图;
图3为一种显示装置的剖面结构示意图;
图4为一种显示装置的拆解结构示意图;
图5为一种显示装置在电磁激励器作用下产生的弯曲波在传播时的振幅分布示意图;
图6为根据本公开实施例的显示装置的剖面结构示意图;
图7为根据本公开实施例的显示装置的拆解结构示意图;
图8为根据本公开实施例的发声基板的中间层的结构示意图;
图9为根据本公开实施例的发声基板的中间层、第一蒙皮以及第二蒙皮的贴合结构示意图;
图10为根据本公开实施例的发声基板的中间层剖面结构示意图;
图11为根据本公开实施例的发声基板的第一蒙皮和第二蒙皮的结构示意图;
图12为根据本公开实施例的具有显示装置的电子设备的结构示意图;
图13为根据本公开实施例的显示装置传导弯曲波时的振幅衰减规律示意图;
图14为根据本公开实施例的发声基板的中间层的结构示意图;
图15为根据本公开另一实施例的发声基板的中间层的结构示意图;
图16为根据本公开实施例的稳定器安装后的剖面结构示意图;
图17为根据本公开实施例的稳定器与电磁激励器的安装结构示意图;
图18为根据本公开实施例的其他结构的稳定器的结构示意图;
图19为根据本公开实施例的支撑机构的剖面结构示意图;
图20为根据本公开另一实施例的支撑机构的剖面结构示意图;
图21为根据本公开另一实施例的支撑机构的结构示意图;
图22为根据本公开实施例的显示装置的实现方式的结构示意图;
图23为根据本公开实施例的显示装置的实现方式的拆解结构示意图;
图24为根据本公开另一实施例的显示装置的实现方式的结构示意图;
图25为根据本公开实施例的电子设备的结构示意图。
提供示例性实施例以使本公开是透彻的且将本公开的范围完全传达给本领域技术人员。为了透彻理解本公开实施例,阐述了许多具体细节,例如具体组件,具体设备和具体方法的示例。对本领域技术人员显而易见的是,不需要采用具体细节,示例性实施例可以以许多不同的形式来体现,并且都不应被解释为限制本公开的范围。在一些示例性实施例中,公知过程、公知的设备结构和公知技术并未详细描述。
在本申请使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本申请。在本文中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。术语“包括”、“包含”和“具有”或者其任何其他变体,意在涵盖非排他性的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地包括对于这些过程、方法、产品或设备固有的其他步骤或单元。除非明确标识为执行顺序,否则本文描述的方法步骤、过程和操作不应被解释为必须以所讨论或图示的特定顺序执行。还应理解可以采用附加步骤或替代步骤。
尽管本文可以使用术语第一,第二,第三等来描述各种元件、组件、区域、层和/或部分,但是这些元件、组件、区域、层和/或部分不应受这些术语的限制。这些术语仅可用于区分一元件、组件、区域、层或部分与另一元件、组件、区域、层或部分。除非上下文明确指出,否则本文中使用的诸如“第一”、“第二”和其他数字之类的术语并不暗示顺序或次序。因此,在不脱离示例性实施例的教导的情况下,下面讨论的第一元件,第一 组件,第一区域,第一层或第一部分可以被称为第二元件,第二组件,第二区域,第二层或第二部分。
为了方便起见,在本文中可以使用空间相对术语,例如“内部”、“外部”、“之下”、“下方”、“下部”、“上方”、“上部”等。用于描述图中所示的一个元件或特征与另一个或多个元件或特征的关系。空间相对术语除了附图中描绘的方位之外,还可以意图涵盖使用或操作中的设备的不同方位。例如,如果附图中的装置被翻转,则被描述为在其他元件或特征“之下”或“下方”的元件将被重新定向在其他元件或特征“之上”。因此,示例性术语“在...下”可以包括上和下两个相对方位。可以其他方式(旋转90度或其他方向)为设备定向,由此解释本文所用的空间相对描述语。
在一些技术中,电子设备可以采用“平板发声技术”,即在显示屏幕所显示画面的后方设置电磁激励器,使得显示屏幕在电磁激励器的作用下,可以通过模态共振发出的弯曲波进行发声。也就说,电子设备中的显示屏幕既能够用于显示,又能够用于代替扬声器发声。因此,电子设备中不需要再为扬声器设置安装位置,以实现电子设备更加轻薄化的设计。
但是,采用“平板发声技术”,即使显示屏幕在不同声道对应的多个电磁激励器的作用下发声,用户也无法明显区分显示屏幕的发声所对应的声道,导致了显示屏幕在发声时的声道的区分度较差,进而影响了电子设备的用户体验。
图1为一种具有扬声器的电子设备的结构示意图,该电子设备以电视机为例,如图1所示,该电视机11包括:显示屏幕12和扬声器13;其中,扬声器13设置在电视机11内部的显示屏幕12后方。扬声器13通常设置在用户观看显示屏幕12方向的左右两侧,提供左右声道声音。
尽管由于电子技术的不断进步,越来越多的电子设备中的关键组件如显示屏幕、基础框架等均能够以较小的厚度实现,可以降低电子设备的整体厚度,但是随着市场上用户对于电子设备的需求逐渐向轻薄化的方向发展,在如图1所示的显示装置11内部,除了设置一些用于显示的装置,给扬声器13预留的空间仍然越来越小。电视机的生产商为了使得电视更轻薄,只能够减少扬声器13的重低音等功能,以减小扬声器13在电视机11中所占的空间,导致电视机11中安装的扬声器13仅能满足普通的播放功能,不能实现更多的音效效果,降低了扬声器13的播放性能。
激光投影电视等电子设备为了追求更好的影音效果,通常会设置独立的投影屏幕,并设置独立的音箱作为扬声器。图2为另一种具有扬声器的电子设备的结构示意图,该电子设备以激光投影电视为例,如图2所示,该激光投影电视21既可以将激光光束投射到显示屏幕22上供用户观看视频画面,还可以向连接的外置扬声器23提供声音信号,使得扬声器23播放音频。如图2所示,由于扬声器23需要独立设置,因此扬声器23可以通过较大的体积实现更多的音效效果,则相应地,电子设备的扬声器23需要占用更多外部空间。
如图1和如图2所示的电子设备中,扬声器除了存在位置局限性等问题,无论是电子设备内置的扬声器,还是外接的扬声器,扬声器所播放的声音均来自于显示屏幕之外,不具备良好的视听重放效果。
因此,相关技术中,在电子设备中应用“可发声屏幕”。例如,可参考图3和图4, 图3为一种显示装置的剖面结构示意图;图4为一种显示装置的拆解结构示意图。其中,该显示装置包括:光学膜片31、发声基板32和电磁激励器33。光学膜片31可用于接收并显示视频或图像内容;在电磁激励器33的作用下,发声基板32通过模态共振发出的弯曲波进行发声。即电子设备中的显示装置既能够用于显示,又能够用于代替扬声器发声。因此,电子设备中不需要再为扬声器设置安装位置,也不需要用户再外接扬声器,从而实现电子设备更加轻薄化的设计。同时,由于发声基板32的面积最大可设置为等于光学膜片31的面积,而发声基板的面积越大,带来的例如重低音等音效效果越好,可以使得显示装置具有较优的播放性能。
但是,在如图3和图4所示的显示装置中,由于发声基板32是整体设置的,因此无论设置多少个电磁激励器33,每个电磁激励器33均是通过作用同一个发声基板32使得发声基板32通过模态共振发出的弯曲波而发声。图5为一种显示装置在电磁激励器作用下产生的弯曲波在传播时的振幅分布示意图,结合图5,以弯曲波在发声基板32中传播的振幅示意图为例来进行说明。发声基板32在电磁激励器33作用下产生弯曲波,该弯曲波以电磁激励器33和发声基板32贴合处为中心向四周扩散,并覆盖整个发声基板32。图中发声基板32上的颜色越深,表示该位置处弯曲波的振幅向所示显示装置的上方的振幅越大;颜色越浅,表示该位置处弯曲波的振幅向所示显示装置的下方的振幅越大。
图5中的弯曲波A的频率为200Hz,弯曲波B的频率为1000Hz,弯曲波C的频率为10000Hz,可以看出,无论弯曲波的频率如何变化,弯曲波在发声基板中扩散时,向各个方向的振幅均衰减不大,即使在图中远离电磁激励器33的最右侧位置,弯曲波的振幅与电磁激励器33附近的振幅也基本相同。也就是说发声基板32在电磁激励器33的作用下产生的弯曲波,在发声基板32中传播时所有位置的振幅分布较为均匀,导致了发声基板32整体均发出强度较为相似声音,使得用户听到显示装置所发出的声音时,带来的直观感受是整个屏幕的所有位置都在发出相似的声音,而无法区分不同电磁激励器所对应的声道,导致了显示装置在发声时的声道的区分度较差,进而影响了电子设备的用户体验。
因此,本公开提供一种显示装置及电磁激励器,通过设置的发声基板在传导电磁激励器所产生的弯曲波时,能够在不同传播方向具有不同的振幅衰减,从而提高显示装置在被不同声道对应的电磁激励器作用下发声时对于声道的区分度,进而提高了具有该显示装置及电磁激励器的电子设备的用户体验。
下面以具体的实施例对本公开的技术方案进行详细说明。下面这几个具体的实施例可以相互结合,对于相同或相似的概念或过程,在某些实施例省略。
图6为根据本公开实施例的显示装置的剖面结构示意图;图7为根据本公开实施例的显示装置的拆解结构示意图。在如图6和图7所示的实施例中,以显示装置为激光电视为例进行说明,而非对其进行限定。
本公开实施例提供的显示装置包括:显示结构31、发声基板32和至少一个电磁激励器33。其中,显示结构31和发声基板32的一侧贴合设置,至少一个电磁激励器33贴合设置在发声基板32的另一侧。所述发声基板32的表面积等于或小于所述显示结构31的表面积。
第一方面,该显示装置的显示结构31用于实现显示装置的显示功能,用于接收并显示光信号。本公开实施例提供的显示结构31包括但不限于:液晶显示器(Liquid Crystal Display,LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)、激光投影硬屏、图像显示膜片或触摸控制功能膜片,所述图像显示膜片包括但不限于具有菲涅尔、条栅或微透镜阵列等光学微结构的膜片。本公开实施例中以显示结构为矩形结构为示例进行说明,在其他实施例中,可以采用其他的结构,如,所述显示结构还可以是弧形结构。
第二方面,该显示装置的显示结构31、发声基板32和至少一个电磁激励器33共同用于实现显示装置的发声功能。在如图6和图7所示的示例中,至少一个电磁激励器33包括两个电磁激励器,所述两个电磁激励器为:第一电磁激励器331和第二电磁激励器332。在其他实施方式中,可包括更多个电磁激励器,其实现原理是类似,不再赘述。以电磁激励器331为例,电磁激励器331用于接收待播放的声音对应的电信号,并将电信号转换为机械振动后,将机械振动作用于发声基板32上。发声基板32在电磁激励器331的机械振动的作用下通过模态共振产生弯曲波,该弯曲波以电磁激励器331和发声基板32贴合处为中心向四周360度的方向范围扩散。发声基板32以及发声基板32所贴合的显示结构31在发声基板32中传播的弯曲波的作用下,以图6所示显示装置的剖面图的上下方向往复振动从而实现发声。
本公开实施例提供的发声基板32,在以电磁激励器331和发声基板32贴合处为中心向四周360度的方向传导弯曲波时,发声基板32对于弯曲波在第一方向所造成的振幅衰减规律,与发声基板32对于该弯曲波在第二方向所造成的振幅衰减规律不同。其中,所述衰减规律可以是振幅衰减的大小变化方式。
在一些实施例中,为了实现发声基板32在传导弯曲波时不同方向的振幅衰减规律不同,本公开实施例中可以通过发声基板32的材料设置,使得发声基板在第一方向对于弯曲波的传导性能,与发声基板在第二方向对于弯曲波的传导性能不同。即,本公开实施例提供的发声基板32具有特定的正交和/或分区强度各向异性的力学结构及传导性能。
在一些实施例中,如图6和图7所示,本公开实施例提供的发声基板包括:第一蒙皮321、中间层322和第二蒙皮323。在一些实施例中,第一蒙皮321和第二蒙皮323分别贴合设置在中间层322两侧面,第一蒙皮321、中间层322和第二蒙皮323的表面积相同;在一些实施例中,第一蒙皮321和第二蒙皮323可以覆盖中间层322的至少部分。
例如,图8为根据本公开实施例的发声基板的中间层的结构示意图,如图8所示,本公开实施例提供的发声基板32的中间层由多个呈六角形排列的蜂窝芯3221连接而成,除了位于该结构四周的蜂窝芯,每个蜂窝芯3221的六个边对应的侧面,分别与其他六个蜂窝芯的对应的侧面相连接。并且,图9为根据本公开实施例的发声基板的中间层、第一蒙皮以及第二蒙皮的贴合结构示意图,如图9所示,在发声基板中,中间层322所包括的蜂窝芯3221的截面与第一蒙皮321和第二蒙皮323垂直设置。在一些实施例中,包括蜂窝芯的中间层通过设置六角形蜂窝芯壁的两个平行边与y方向平行,在x方向蜂窝芯壁不存在平行边,使得发声基板在x方向与y方向具有不同传导性能。通过调整蜂窝芯3221截面的六角形拉伸比,实现不同方向的传导性能不同。图10为根据本公开实施例的发声基板的中间层剖面结构示意图。如图10所示,蜂窝芯的六角形截面在x-y方向的拉伸比为d/L。记第一方向为图中的y方向、第二方向为图中的x方向;则d为多个六角形蜂窝芯依次排列时,x方向上每个蜂窝芯的单位长度,所述单位长度d指:多个六角形蜂窝芯依次排列后在x方向的最小长度单位,即多个六角形蜂窝芯在x方向上按照单位长度d的规 律重复排列;在图10中单位长度d为六角形的与x轴垂直的边③和边⑥之间的最短距离;L为多个六角形蜂窝芯依次排列时,y方向上每个蜂窝芯的单位长度,所述单位长度L指:多个六角形蜂窝芯依次排列后在y方向的最小长度单位,即多个六角形蜂窝芯在y方向上按照单位长度L的规律重复排列;在图10中单位长度L为六角形的边①、⑥、⑤和⑦在y方向的距离之和。
由于对于标准的六角形,在x-y方向的拉伸比为0.58:1。则在本公开实施例中,为了使得发声基板在不同方向的传导性能不同,则可以将发声基板的中间层中的所有蜂窝芯,均以截面六角形的x方向按预设的拉伸比进行拉伸,其中该预设的拉伸比小于预设阈值0.58:1。
拉伸比d/L越小,说明如图10所示的蜂窝芯的六角形界面沿y方向的平行壁分布更密集,刚度更强,因此容易通过振动而传导弯曲波;也说明在x方向上六角形蜂窝芯壁的夹角更大,刚度更弱,因此容易吸收弯曲波振动的传导。
因此,如图10所示的中间层通过蜂窝芯拉伸比的设置,实现了发声基板在x方向和y方向的传导性能不同,进而发声基板在传导弯曲波时,在x方向和y方向的振幅衰减规律不同。如图10所示的实施例中,当x-y方向的拉伸比小于0.58:1时,发声基板在x方向对于弯曲波的传导性能弱于其在y方向对于弯曲波的传导性能,能够造成设置如图10所示中间层的发声基板在传输弯曲波时,弯曲波在x方向的振幅衰减大小,大于弯曲波在y方向的振幅衰减大小。
由于第一蒙皮和第二蒙皮贴合在中间层两侧设置,因此为了配合中间层在x-y方向上的传导性能,本公开实施例提供的中间层中,对于第一蒙皮和第二蒙皮的纤维也进行相应的设置。
例如,图11为根据本公开实施例的发声基板的第一蒙皮和第二蒙皮的结构示意图,如图11所示的蒙皮表面纤维结构示意图,该蒙皮可以是上述实施例中的第一蒙皮,或者第二蒙皮。如图11所示的蒙皮结构为x-y方向上的交织纤维结构,其中,平行于y方向且垂直于x方向的纤维的密度,大于平行于x方向且垂直于y方向的纤维的密度。
或者,在本公开实施例提供的另一种第一蒙皮和第二蒙皮的结构中,可以不设置平行于x方向且垂直于y方向的纤维,即,第一蒙皮和第二蒙皮为单向纤维结构,所有纤维的方向均平行于y方向且垂直于x方向设置。
因此,如图11所示的第一蒙皮和第二蒙皮的结构,能够配合中间层传导,使得发声基板在传导弯曲波时,x方向和y方向的振幅衰减规律不同。如图11所示的实施例中,第一蒙皮和第二蒙皮的纤维在y方向具有更密集的平行纤维分布,其刚度更强,因此更加容易通过振动而传导弯曲波;而第一蒙皮和第二蒙皮的纤维在x方向平行纤维分布的较为稀疏,其刚度更弱,因此不容易通过振动而传导弯曲波。因此,能够使得设置有如图10所示中间层以及设置有如图11所示的第一蒙皮和第二蒙皮的发声基板在传输弯曲波时,弯曲波在x方向的振幅衰减大小,大于弯曲波在y方向的振幅衰减大小。
在一些实施例中,所述蜂窝芯的材质可以是纸质、芳纶、金属、或其它复合材料。
在一些实施例中,第一蒙皮和第二蒙皮的材质包括但不限于玻璃纤维、碳纤维、玻璃-碳混合纤维、塑料、轻质铝等。
在一些实施例中,第一蒙皮和第二蒙皮厚度可以相同或不同,第一蒙皮和第二蒙皮的 厚度范围可以为:0.1~0.5mm;或者,第一蒙皮和第二蒙皮的厚度范围可以为0.18~0.36mm。
在如图6-11所示的实施例中,以第一方向和第二方向为相互垂直的x-y方向为例进行说明。在实际应用场景中,由于电子设备所播放的声音的左右声道设置的需求,本公开所述的x-y方向,在一些实施例中,y方向可以是电子设备的上下方向,x方向可以是电子设备的左右方向。
图12为根据本公开实施例的具有显示装置的电子设备的结构示意图,如图12所示的电子设备包括如图6-11任一项所述的显示装置。用户能够通过显示装置的显示结构31观看所显示的内容,同时,由于电子设备所播放的声音需要以左右声道进行设置,因此,以用户观看方向为中心,在显示装置同一高度的左侧设置第一电磁激励器331,在显示装置同一高度的右侧设置第二电磁激励器332。
对于如图12所示的电子设备使用如图6-11中任一所述的显示装置时,x方向为图12中用户观看方向的左右两侧,y方向为图12中用户观看方向的上下两侧。
图13为根据本公开实施例的显示装置传导弯曲波时的振幅衰减规律示意图,如图13示出了如图12所示的屏幕中,在第一电磁激励器331的激励下,发声基板32各方向的振幅衰减大小。其中,在x-y方向上,记图中x=0,y=0的P(0,0)点为第一电磁激励器331贴合发声基板32的位置,则发声基板32在第一电磁激励器331作用下产生的弯曲波以P点为中心向四周扩散,并且发声基板在P点的振幅最大。将某一时刻P点的振幅记为100%×D,则弯曲波在发声基板32中以P点为中心向四周360度进行扩散时,振幅逐渐衰减,从100%×D逐渐衰减为90%×D、80%×D……。尤其单独针对x方向和y方向,表面波在这两个方向传导时,由于中间层的蜂窝芯的拉伸比小于预设阈值且第一蒙皮和第二蒙皮在y方向的纤维密度大于x方向的纤维密度,因此,P点处的振幅在x方向的振幅衰减数值以及衰减速度,大于P点处的振幅在y方向的振幅衰减数值以及衰减速度。
对于如图12所示的电子设备,电磁激励器331和电磁激励器332激励并通过发声基板传播的弯曲波在上下方向传导时衰减较小,而在左右方向传导时衰减较大。因此,由于左侧的电磁激励器331激励发声基板32得到的弯曲波向右侧传播时很快衰减,使得左侧的弯曲波强度大于右侧的弯曲波强度,此时用户能够听到屏幕左侧的声音大于屏幕右侧的声音,从而能够分辨出电磁激励器331对应的左声道的声音。同样地,由于右侧的电磁激励器332激励发声基板32得到的弯曲波向左侧传播时很快衰减,使得右侧的弯曲波强度大于左侧的弯曲波强度,此时用户能够听到屏幕右侧的声音大于屏幕左侧的声音,从而能够分辨出电磁激励器332对应的右声道的声音。
因此,综上,在本公开实施例提供显示装置中,通过发声基板中间层蜂窝芯拉伸比的设置,以及第一蒙皮和第二蒙皮纤维方向的设置,使得发声基板在传导电磁激励器所产生的弯曲波时,能够在不同的传播方向的具有不同的振幅衰减,提高了显示装置在被不同声道对应的电磁激励器作用下发声时,显示装置对于声道的区分度,进而提高了具有该显示装置的电子设备的用户体验。
在上述如图12和图13所示实施例的基础上,为了更进一步地增加使得弯曲波在x方向传播时的振幅衰减大小,使用户能够更加明确地区分左右声道,本公开的一些实施例中,还可以在发声基板的中间层中设置隔离区,使得第一电磁激励器和第二电磁激励器分别通过激励隔离区两侧的区域产生并传导弯曲波。
图14为根据本公开实施例的发声基板的中间层的结构示意图,如图14所示的实施例中提供的发声基板32的中间层依次包括:左侧第一电磁激励器331对应的第一区域、隔离区域和右侧第二电磁激励器332对应的第二区域。其中,第一区域、第二区域和隔离区域均由呈六角形排列的蜂窝芯组成。特别地,用于组成第一区域和第二区域的蜂窝芯的拉伸比,大于用于组成隔离区域的蜂窝芯的拉伸比。
结合如图10所示的上述分析可知,当中间层隔离区域的蜂窝芯拉伸比越小时,发声基板在x方向上传导弯曲波时,振幅的衰减越大。对于设置如图14中发声基板的电子设备,左侧的电磁激励器331激励发声基板32的第一区域得到的弯曲波向右侧传播过程中,经过隔离区域时,弯曲波的振幅会比没有隔离区的有更多的衰减,从而使得左侧第一区域的弯曲波强度明显大于右侧第二区域的弯曲波强度,进而使得用户能够明显听到屏幕左侧的声音,而基本听不到屏幕右侧的声音,由此能够更加清晰地分辨出电磁激励器331对应的左声道的声音。同样地,当右侧的电磁激励器332激励发声基板32的第二区域得到的弯曲波在向左侧传播过程中,经过隔离区域时,弯曲波的振幅会更多地衰减,从而使得右侧第二区域的弯曲波强度明显大于左侧第一区域的弯曲波强度,进而使得用户能够明显地听到屏幕右侧的声音,而基本听不到屏幕左侧的声音,由此能够更加清晰地分辨出电磁激励器332对应的右声道的声音。
图15为根据本公开实施例的发声基板的中间层的结构示意图,如图15所示的实施例中提供的发声基板32与图14所示发声基板32的结构类似,所不同在于在隔离区域的蜂窝芯中填充泡沫阻尼材料,同样地,隔离区域的泡沫阻尼材料用于增加发声基板在x方向上传导弯曲波时振幅的衰减。
在一些实施例中,在上述如图6到图15所示的任一实施例的基础上,本公开实施例还提供一种用于支撑电磁激励器的稳定器,以防止电磁激励器偏离最佳工作区域,减小电磁激励器由于振动而在不同方向的扭摆运动,从而减少,显示装置在电磁激励器作用下发出声音的失真。
下面参照图16和图17,其中图16为根据本公开实施例的稳定器安装后的剖面结构示意图,图17为根据本公开实施例的稳定器与电磁激励器的安装结构示意图。
如图17所示,本公开实施例提供的稳定器7包括:支架72和多个向远离支架72方向延伸的片状弹性支脚71。其中,每个支脚71向远离支架72的方向回旋延伸,支脚71分布在第一圆(图17和图18均未标出)的圆周上,该第一圆的圆心位于支架72的轴线(图17和图18均未标出)上,该第一圆可以是圆心位于支架72的轴线上的任一圆。支架72具有第一固定位(图17和图18中未标出),该第一固定位的轴线可以与支架72的轴线共线,电磁激励器331的振动输出端穿过支架72的第一固定位与发声基板32抵接。
在一些实施例中,所述稳定器由于其向外延伸的支脚,该结构又可被称为“Spider结构”。以电磁激励器331为例,稳定器的支架72具有腔室,所述腔室的形状与电磁激励器331的相匹配,用于容纳并固定电磁激励器。则当电磁激励器331为圆形时,所述腔室的形状为圆形;当电磁激励器331为椭圆形时,所述腔室的形状为椭圆形。
稳定器7还包括至少一个阻尼块8,至少一块阻尼块8中的第一阻尼块设置在多个支脚71中第一支脚的一端,该至少一个阻尼块8的数目小于或等于支脚71的数目,阻尼块8与发声基板32固定连接。该支脚71可以配置为沿稳定器7的周向延伸(也即是向远离 稳定器7的中心处回旋延伸),或者,该支脚71可以配置为沿远离稳定器7的轴线的方向延伸(也即是支脚71可以辐射延伸)。
如图17中所示的稳定器7的四个支脚71分别通过一阻尼块8固定于发声基板32的第二蒙皮323之上。
由于向外延伸的支脚71和阻尼块8具有较低的弹性系数,因此,稳定器能够对来自平板的振动共同构成机械低通滤波位置稳定器,位置稳定器弹性支脚各支点分别收到弯曲波的不同随机振动,经机械低通滤波器滤波后保持稳定状态,进而保持位于支架72中的电磁激励器331的稳定。
由于电磁激励器331的振动输出端穿过稳定器7与发声基板32抵接,阻尼块8与发声基板32固定连接,因此,该稳定器7可以使电磁激励器331与发声基板32处于相对稳定的状态,并保证电磁激励器331不会产生轴向旋转。进一步的,该稳定器7的结构使得该稳定器7具有机械低通滤波器(类似于减震器)的功能,从而使得振动传导至稳定器7的支脚72后被过滤,不会影响电磁激励器331自身的振动。该电磁激励器331有驱动线圈管和磁极器件,该磁极器件可以产生磁场,驱动线圈管在磁场中心可以产生较大电动力,以使驱动线圈管致动。该稳定器7可以防止电磁型激励器的驱动线圈管因发声基板的振动影响,而偏离磁场中心,从而保证该电磁型激励器处于最佳工作状态,并且稳定器7可以保证电磁型激励器不会产生轴向扭摆,从而大幅度的减少发声基板的声音失真。
图18为根据本公开实施例的其他结构的稳定器的结构示意图,图18示出了几种其他结构的稳定器,其中,稳定器可具有3或4个支脚,并且支脚可以向远离支架的方向回旋延伸或者辐射延伸。其实现方式与原理与图17所示稳定器相同,不再赘述。
在上述各实施例的基础上,本公开所提供的显示装置还包括支撑机构,以对显示装置进行支撑。例如,支撑机构可以是显示装置的屏幕框架。
图19为根据本公开实施例的支撑机构的剖面结构示意图,其中,发声基板32和显示结构31的边缘处被悬吊结构6包裹后,由支撑机构5进行固定,所述悬吊结构6用于容纳发声基板32和显示结构31,所述悬吊结构6可以是发泡胶条。支撑机构5在发声基板32靠近电磁激励器一侧,还包括:第一支撑结构501和第二支撑结构502,以共同将电磁激励器支撑并固定在发声基板32一侧。
图20为根据本公开另一实施例的支撑机构的剖面结构示意图,图21为根据本公开另一实施例的支撑机构的结构示意图。如图20和图21所示,本公开实施例提供的支撑机构包括:后盖503、缓冲部件504和密封缓冲材料505。所述缓冲部件504为声音阻尼隔离圈,可以通过EVA发泡材料实现。
在上述实施例的基础上,本公开实施例还提供一种显示装置在工程应用中的实现方式,可参照图22和图23,其中,图22为根据本公开实施例的显示装置实现方式的结构示意图,图23为根据本公开实施例的显示装置实现方式的拆解结构示意图。图23示出了实际的具有显示装置的电子设备中,电磁激励器、边框结构以及缓冲件的设置方式。如图22所示的示例中,显示装置根据电子设备需要满足的播放性能要求,设置多个不同激励频率的电磁激励器a、b、c、d、e、f,以通过不同的电磁激励器激励发声基板产生不同共振频率的弯曲波,从而展宽显示装置的频率响应。
其中,本公开实施例中提供的显示装置的发声基板在图中所示的x方向和y方向的传 导性能不同,进而发声基板在传导弯曲波时,在x方向和y方向的振幅衰减规律不同。其中,图中显示装置的左声道对应x负方向的电磁激励器a,c和d,即电磁激励器a,c和d可用于激励显示装置产生左声道信号对应的弯曲波;图中显示装置右声道对应x正方向的电磁激励器b,e和f,即电磁激励器b,e和f可用于激励显示装置产生右声道声音信号对应的弯曲波。不同性能的电磁激励器呈斜线排列,y方向上端的电磁激励器距离显示装置的边界更近。左声道对应的电磁激励器和右声道对应的电磁激励器在显示装置上总体呈“v”形排列规律。
有关图22中显示装置的结构可参照图23所示,其中,显示装置的显示结构31和发声基板32贴合设置,并且二者的边缘处被悬吊结构(发泡双面胶条)6包裹后,由支撑机构5进行固定。同时,对于电磁激励器a和电磁激励器b,通过第一支撑结构501进行固定,第一支撑结构501的两侧设置在支撑机构5较长的两边之间,第一支撑结构501与电磁激励器的连接方式可参照图19所示。对于电磁激励器c、d,以及电磁激励器e、f,通过后盖503和缓冲部件504进行固定,后盖503和缓冲部件504与电磁激励器的连接方式可参照图21所示。此外,如图中所示的每个电磁激励器均通过稳定器7安装在发声基板32之上。
如图22和如图23所示的实施例仅为显示装置在一种实现方式中的示例性说明,对于不同数量的电磁激励器的安装方式、位置设置方式,均在本公开的保护范围之内,例如,图24为根据本公开实施例的显示装置的实现方式的结构示意图,其示出了具有显示装置的电子设备中,电磁激励器、边框结构以及缓冲件的设置方式以及强度方向。
如图24所示,在示意图A中,左声道和右声道各对应两个电磁激励器,并且两个电磁激励器设置在同一支撑结构上;在示意图B中,左声道和右声道各对应两个电磁激励器,并且两个电磁激励器设置在同一后盖和缓冲部件中;在示意图C中,左声道和右声道各对应三个电磁激励器,并且三个电磁激励器中仅一个电磁激励器设置在支撑结构上;在示意图D中,左声道和右声道各对应三个电磁激励器,并且三个电磁激励器中的两个电磁激励器设置在同一后盖和缓冲部件中,另一个电磁激励器设置在一个后盖和缓冲部件中。
此外,图25为根据本公开实施例的电子设备的结构示意图,如图25所示,本公开实施例提供的电子设备20包括:如图6-24中任一实施例所述的显示装置2001。其中,所述电子设备包括但不限于以下设备:手机、平板电脑、台式电脑、电视机,以及其他具有显示屏幕的电器,例如:洗衣机、冰箱等。
出于说明和描述的目的,提供了前述实施例,而非旨在穷举或限制本公开。具体实施例的各个元件或特征通常不限于该具体实施例,而是在适用情况下即使未具体示出或描述也可在所选实施例中使用或互换。同样也可以许多形式变型,这种变型不被认为是脱离本公开,而且所有这样的修改被涵盖在本公开的范围内。
Claims (18)
- 一种显示装置,包括:显示结构、发声基板、至少一个电磁激励器和稳定器;其中,所述发声基板的一面和所述显示结构贴合设置,所述至少一个电磁激励器通过所述稳定器固定贴合在所述发声基板的另一面;所述稳定器包括:支架和多个向远离所述支架方向延伸的弹性支脚,其中所述支架用于容纳所述至少一个电磁激励器中的第一电磁激励器,多个所述弹性支脚用于保持所述第一电磁激励器的位置稳定。
- 根据权利要求1所述的显示装置,其中所述多个支脚分布在第一圆的圆周上,所述第一圆的圆心位于所述支架的轴线上。
- 根据权利要求2所述的显示装置,其中所述支架具有第一固定位,所述第一固定位的轴线与所述支架的轴线共线,所述第一电磁激励器的振动输出端穿过所述支架的第一固定位与所述发声基板抵接。
- 根据权利要求1所述的显示装置,其中所述支架具有腔室,所述腔室的形状与所述第一电磁激励器相匹配。
- 根据权利要求1所述的显示装置,还包括:至少一个阻尼块,所述至少一个阻尼块中的第一阻尼块设置在所述多个支脚中第一支脚的一端,所述第一阻尼块固定在所述发声基板上。
- 根据权利要求5所述的显示装置,其中所述至少一个阻尼块的数目小于或者等于所述多个支脚的数目。
- 根据权利要求1所述的显示装置,其中所述至少一个支脚配置为向远离所述支架的方向回旋延伸或者辐射延伸。
- 根据权利要求1所述的显示装置,其中所述发声基板包括:第一蒙皮、第二蒙皮和中间层,所述第一蒙皮和所述第二蒙皮分别贴合设置在所述中间层两侧面。
- 根据权利要求8所述的显示装置,其中所述中间层由多个蜂窝芯连接而成,所述蜂窝芯的截面呈六角形。
- 根据权利要求9所述的显示装置,其中所述多个蜂窝芯的截面的六角形按预设的拉伸比进行拉伸,所述预设的拉伸比小于预设阈值。
- 根据权利要求8所述的显示装置,其中所述第一蒙皮和所述第二蒙皮为交织纤维结构,所述交织纤维结构在不同方向上的纤维密度不同。
- 根据权利要求8所述的显示装置,其中所述第一蒙皮的厚度和所述第二蒙皮的厚度不同。
- 根据权利要求8所述的显示装置,其中所述至少一个电磁激励器包括:第一电磁激励器和第二电磁激励器;所述中间层包括:第一区域、隔离区域和第二区域,其中,所述第一区域和第二区域用于传导弯曲波,所述隔离区域用于衰减所述第一区域和所述第二区域之间的弯曲波的振幅;所述第一电磁激励器用于向所述第一区域发送磁励信号,所述第一区域用于接收并传导所述磁励信号产生的弯曲波,使得所述第一区域对应的发声基板和显示结构振动发声;所述第二电磁激励器用于向所述第二区域发送磁励信号,所述第二区域用于接收并传导所述磁励信号产生的弯曲波,使得所述第二区域对应的发声基板和显示结构振动发声。
- 根据权利要求13所述的显示装置,其中所述第一区域、所述第二区域和所述隔离区域均由呈六角形排列的蜂窝芯组成,且用于组成所述第一区域和所述第二区域的蜂窝芯的拉伸比,大于用于组成所述隔离区域的蜂窝芯的拉伸比。
- 根据权利要求14所述的显示装置,其中在组成所述隔离区域的所述蜂窝芯中填充泡沫阻尼材料。
- 根据权利要求1所述的显示装置,还包括:悬吊结构、以及支撑机构;所述悬吊结构用于容纳所述发声基板和所述显示结构;所述支撑机构用于支撑并覆盖所述至少一个电磁激励器和所述悬吊结构之间的空间。
- 一种电磁激励器,包括稳定器,所述稳定器包括:支架和多个向远离所述支架方向延伸的片状弹性支脚,其中所述支架用于容纳所述电磁激励器,多个所述弹性支脚用于保持所述电磁激励器的位置稳定。
- 根据权利要求17所述的电磁激励器,还包括:至少一个阻尼块,所述至少一个阻尼块中的第一阻尼块设置在所述多个弹性支脚的第一弹性支脚的一端。
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| CN113115185A (zh) * | 2021-04-07 | 2021-07-13 | 国光电器股份有限公司 | 激励器 |
| CN217718365U (zh) * | 2022-03-21 | 2022-11-01 | 海信视像科技股份有限公司 | 显示设备 |
| DE202023106219U1 (de) * | 2023-10-27 | 2025-01-31 | Schwarz Gmbh | Übertragungsvorrichtung eines eine Anregungseinheit und eine Aufnahmeeinheit aufweisenden Körperschallwandlers und System zur Übertragung von Schwingungen |
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| CN215187358U (zh) | 2021-12-14 |
| CN112104958A (zh) | 2020-12-18 |
| US20210243511A1 (en) | 2021-08-05 |
| EP3972287A1 (en) | 2022-03-23 |
| US11564023B2 (en) | 2023-01-24 |
| CN116744190A (zh) | 2023-09-12 |
| CN112104958B (zh) | 2023-05-05 |
| EP3972287A4 (en) | 2022-08-31 |
| EP3972287B1 (en) | 2026-03-04 |
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