CN116168603A

CN116168603A - Display module and display device

Info

Publication number: CN116168603A
Application number: CN202111414970.2A
Authority: CN
Inventors: 郭兴奎; 陈俊生; 臧远生; 许徐飞; 杨杰; 周如; 王一军; 杨明坤
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2023-05-26

Abstract

The invention provides a display module and a display device, relates to the technical field of display, and has a small frame and can meet the requirement of a narrow frame. The display module comprises a sound generating unit, a display panel and a driving plate; the sounding unit comprises a body area and an extension area connected with one side of the body area; the body region comprises a first electrode, a supporting layer, a second electrode and a first vibrating membrane which are sequentially laminated on the display panel; the extension area comprises a second vibrating membrane, a first lead and a second lead, and the second vibrating membrane and the first vibrating membrane are of an integrated structure; the second electrode is electrically connected with the second lead; the body region further comprises a conductive part, wherein the conductive part is insulated from the second electrode and is electrically connected with the first lead and the first electrode respectively; the second vibrating diaphragm, the first lead and the second lead form a first connecting part, and the first connecting part is in binding connection with the driving plate.

Description

Display module and display device

Technical Field

The invention relates to the technical field of display, in particular to a display module and a display device.

Background

The current display device needs to implement sound output by separately providing a sound generating device (e.g., a speaker). However, the requirements of users for narrow borders of display devices are increasing, and the space left for sound emitting devices is decreasing. Therefore, the screen sounding display device is applied, but the frame of the screen sounding display device is wider at present, and the requirement of a narrow frame is difficult to meet, so that a full screen cannot be realized.

Disclosure of Invention

The embodiment of the invention provides a display module and a display device, wherein the display device has a small frame, can meet the requirement of a narrow frame, and is beneficial to realizing a comprehensive screen.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:

in one aspect, a display module is provided, including a sound generating unit, a display panel and a driving board, where the sound generating unit is disposed on a light emitting side of the display panel;

the sound generating unit comprises a body area and an extension area connected with one side of the body area;

the body region comprises a first electrode, a supporting layer, a second electrode and a first vibrating membrane which are sequentially laminated on the display panel; the first electrode is insulated from the second electrode;

the extension area comprises a second vibrating membrane, a first lead and a second lead, and the second vibrating membrane and the first vibrating membrane are of an integrated structure; the first lead wire and the second lead wire are insulated and arranged on one side of the second vibrating membrane;

wherein the second electrode is electrically connected with the second lead; the body region further comprises a conductive part which is insulated from the second electrode and is electrically connected with the first lead and the first electrode respectively;

The second vibrating diaphragm, the first lead wire and the second lead wire form a first connecting part, and the first connecting part is in binding connection with the driving plate.

Optionally, the first electrode includes a first transparent sub-electrode and a first metal sub-electrode; the first metal sub-electrode is arranged on one side of the first transparent sub-electrode, which is far away from the display panel, and is electrically connected with the first transparent sub-electrode;

wherein the conductive part is in contact with the first metal sub-electrode.

Optionally, the second electrode includes a second transparent sub-electrode and a second metal sub-electrode; the second metal sub-electrode is arranged on one side of the second transparent sub-electrode, which is close to the display panel, and is electrically connected with the second transparent sub-electrode;

wherein the second metal sub-electrode is connected with the second lead.

Optionally, the second metal sub-electrode, the first lead and the second lead are arranged in the same layer.

Optionally, the body region includes a central region and an edge region surrounding the central region; the display panel includes a display region and a non-display region surrounding the display region; the central area corresponds to the display area, and the edge area corresponds to the non-display area;

The first transparent sub-electrode comprises a planar electrode and is positioned in the central area and the edge area; the first metal sub-electrode comprises a ring-shaped electrode and is positioned in the edge area; the first transparent sub-electrode is contacted with the first metal sub-electrode;

the sound generating unit further comprises a first insulating layer positioned in the body area, wherein the first insulating layer covers the first transparent sub-electrode and the first metal sub-electrode, and part of the first metal sub-electrode is exposed;

the conductive portion is in contact with a portion of the first metal sub-electrode not covered by the first insulating layer.

Optionally, the edge region includes a first region;

the second transparent sub-electrode comprises a planar electrode, and is positioned in the central region and the region except the first region in the edge region;

the second metal sub-electrode comprises a ring-shaped electrode and is positioned in a region except the first region in the edge region;

the conductive part is arranged on one side of the first vibrating film, which is close to the display panel, and is positioned in the first area.

Optionally, the second diaphragm is connected to at least a portion of the first diaphragm located in the first region, and the conductive portion is connected to the first lead.

Optionally, the sound generating unit further includes a second insulating layer; the second insulating layer is at least positioned in the body region;

the orthographic projection of the second metal sub-electrode and the second transparent sub-electrode on the display panel is positioned within the orthographic projection of the second insulating layer on the display panel, and the orthographic projection of the conductive part on the display panel is not overlapped with the orthographic projection of the second insulating layer on the display panel.

Optionally, the display panel includes a first substrate and a second substrate disposed opposite to each other; the first substrate is arranged between the sound generating unit and the second substrate;

the display panel further comprises a first polaroid, wherein the first polaroid comprises a first part and a second part connected with one side of the first part; the first part is arranged on one side of the second electrode away from the first substrate and also serves as the first vibrating membrane; the portion of the first polarizer extending beyond the edge of the first substrate is the second portion, and the second portion is also used as the second vibrating membrane.

Optionally, the first substrate includes a color film substrate, and the second substrate includes an array substrate;

Or, the first substrate comprises an array substrate, and the second substrate comprises a color film substrate.

Optionally, the display panel includes a cover plate, a second polarizer, and a color film substrate and an array substrate that are disposed opposite to each other; the cover plate is arranged on one side, far away from the array substrate, of the color film substrate, the second polaroid is arranged between the cover plate and the color film substrate, and the sound generating unit is arranged on one side, far away from the array substrate, of the cover plate.

Optionally, the display module further includes a second connection portion, and the array substrate further includes a binding end;

and two ends of the second connecting part are respectively connected with the binding end and the driving plate in a binding way.

Optionally, the first connection portion and the second connection portion are disposed on the same side of the display panel.

Optionally, the first connection portion and the second connection portion are bound on the same side of the driving plate; or the first connecting part and the second connecting part are respectively bound at two opposite sides of the driving plate.

In another aspect, there is provided a display apparatus including: the display module.

The embodiment of the invention provides a display module and a display device, wherein the display module comprises a sounding unit, a display panel and a driving plate, and the sounding unit is arranged on the light emitting side of the display panel; the sound generating unit comprises a body area and an extension area connected with one side of the body area; the body region comprises a first electrode, a supporting layer, a second electrode and a first vibrating membrane which are sequentially laminated on the display panel; the first electrode is insulated from the second electrode; the extension area comprises a second vibrating membrane, a first lead and a second lead, and the second vibrating membrane and the first vibrating membrane are of an integrated structure; the first lead wire and the second lead wire are insulated and arranged on one side of the second vibrating membrane; wherein the second electrode is electrically connected with the second lead; the body region further comprises a conductive portion insulated from the second electrode and electrically connected to the first lead and the first electrode, respectively; the second vibrating diaphragm, the first lead wire and the second lead wire form a first connecting part, and the first connecting part is in binding connection with the driving plate. In the display module, the sounding unit can be bound with the driving plate through the first connecting part formed by the second vibrating diaphragm, the first lead and the second lead, so that a binding area is prevented from being reserved independently, the area needing shielding of the frame is reduced, the requirement of a narrow frame can be met, and the display module is beneficial to realizing a comprehensive screen; meanwhile, the second vibrating diaphragm and the first vibrating diaphragm are of an integrated structure, so that screen integration is facilitated.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification, so that the technical means of the present application can be more clearly understood, and the following specific embodiments of the present application are specifically described below.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 and fig. 2 are schematic structural diagrams of two display modules according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first diaphragm and a second diaphragm according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second transparent sub-electrode according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second metal sub-electrode according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the second transparent sub-electrode and the second metal sub-electrode formed in sequence on the basis of fig. 3 according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of the second insulating layer formed on the basis of fig. 6 according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a first transparent sub-electrode according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first metal sub-electrode according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a structure after forming a first metal sub-electrode on the basis of FIG. 8 according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a structure after forming a first insulating layer on the basis of FIG. 10 according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of the support layer and the bonding layer formed in sequence on the basis of fig. 11 according to an embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view of the display module along the direction AA' in FIG. 12;

FIG. 14 is a schematic cross-sectional view of the display module along the DD' direction in FIG. 12;

fig. 15, 20 and 24 are schematic views of various display modules in the related art;

fig. 16, 21, 25 are side views of fig. 15, 20, 24, respectively;

fig. 17, fig. 22, and fig. 26 are schematic views of various display modules according to an embodiment of the invention;

FIGS. 18 and 19 are two side views of FIG. 17;

fig. 23 and 27 are side views of fig. 22 and 26, respectively.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without creative efforts, are within the protection scope of the invention.

In the embodiments of the present invention, the words "first," "second," and the like are used to distinguish between the same item or similar items that have substantially the same function and function, and are merely used to clearly describe the technical solutions of the embodiments of the present invention, and are not to be construed as indicating or implying relative importance or implying an order of magnitude of the indicated technical features.

In the embodiments of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

An embodiment of the present invention provides a display module, referring to fig. 2, including: the display panel comprises a sounding unit 1, a display panel 2 and a driving plate 3, wherein the sounding unit 1 is arranged on the light emitting side of the display panel 2.

As shown in fig. 3 and 6, the sound generating unit 1 includes a body region 4, and a protruding region 5 connected to one side of the body region 4.

As shown in fig. 6, 10 and 13, the body region 4 includes a first electrode 11, a support layer 10, a second electrode 12 and a first vibration film 13 sequentially stacked over the display panel; the first electrode 11 and the second electrode 12 are insulated.

As shown in fig. 3 and 6, the extension region 5 includes a second diaphragm 14, a first lead 15, and a second lead 16, the second diaphragm 14 and the first diaphragm 13 being of a unitary structure; the first lead and the second lead are insulated and disposed on one side of the second diaphragm.

Wherein the second electrode is electrically connected with the second lead; as shown in connection with fig. 6, 7 and 14, the body region 4 further comprises a conductive portion 17, the conductive portion 17 being insulated from the second electrode 12 and electrically connected to the first lead 15 and the first electrode 11, respectively.

As shown in fig. 3 and 6, the second diaphragm 14, the first lead 15, and the second lead 16 constitute a first connection portion 18, which is bonded to the driving board.

In the body region of the above sound generating unit, the first electrode may include only one layer of sub-electrodes, or include multiple layers of sub-electrodes, for example: two layers of sub-electrodes are not limited herein. Similarly, the second electrode may include only one layer of sub-electrode, or include multiple layers of sub-electrode, for example: two layers of sub-electrodes are not limited herein.

In the body region of the above-mentioned sound generating unit, the specific structure of the supporting layer is not limited, and as an example, as shown in fig. 12 and 13, the supporting layer 10 may include a plurality of independently disposed spacers 36, and gaps 37 are disposed between adjacent spacers 36, so as to form a vibration cavity together with the first electrode and the second electrode at both sides of the supporting layer. Here, the shape of the spacer is not limited, and the spacer may be cylindrical, stepped, truncated cone, prismatic, or the like, and the cross section of the spacer may be circular, trapezoidal, triangular, or the like, as an example. Fig. 12 is a view of the spacer in a circular cross section, and the cross section of the spacer is a cross section along the OB direction shown in fig. 12.

The first vibrating diaphragm and the second vibrating diaphragm are of an integrated structure, and can be formed at one time by adopting the same process. The specific forming process is not limited herein, and may be formed by a normal temperature sputtering process, for example. It should be noted that, since the second diaphragm is bound to the driving plate, the second diaphragm needs to have a certain flexibility, so that the binding is facilitated. Specific materials, thicknesses, and the like of the first diaphragm and the second diaphragm are not limited herein. For example, the materials of the first and second diaphragms may be flexible films such as PET (Polyethylene Terephthalate ) films. The first and second diaphragms may be provided separately or may be used in common with a polarizer of a display panel, which is not limited herein.

In order to reduce the number of patterning processes and reduce the cost, the first lead and the second lead are arranged in the same layer, wherein the same layer is formed by adopting one patterning process. The one-time patterning process refers to a process of forming a desired layer structure through one exposure. The primary patterning process comprises masking, exposing, developing, etching, stripping and the like. Since the first lead and the second lead have weak adhesion to the second diaphragm, if the first lead and the second lead are directly formed on the second diaphragm, the first lead and the second lead are likely to be peeled off. In order to improve the adhesion and stability, a buffer material such as silicon nitride may be first disposed on the second vibration film, and then the first lead and the second lead may be formed; meanwhile, the second vibrating film can be formed by adopting a normal-temperature sputtering process.

The first connecting part is formed by the second vibrating diaphragm, the first lead and the second lead, and can be directly bound and connected with the driving plate, so that a flexible circuit board (Flexible Printed Circuit, FPC) of the related technology is replaced, a binding area is not required to be reserved, and the frame is reduced.

The specific position, material and structure of the conductive portion are not limited as long as the conductive portion serves to electrically connect the first lead and the second electrode.

The sound generating unit belongs to an electrostatic ultrasonic transducer, and the electrostatic ultrasonic transducer is a structural basis for realizing directional sound generation and utilizes electric field force to vibrate a vibrating diaphragm so as to generate ultrasonic waves. When the sounding unit works, a certain bias voltage is applied to the first electrode and the second electrode, and an alternating current audio signal is superposed; the bias voltage is overlapped with the original bias voltages of the first electrode and the second electrode, so that an alternating pulsating electric field is formed. Under the action of electrostatic force of alternating electric field, the first vibrating diaphragm vibrates, and then ultrasonic is emitted. Based on nonlinear acoustic effect, audible sound can be continuously demodulated in the ultrasonic propagation process; meanwhile, the ultrasonic propagation has super-strong directivity, so that the demodulated audible audio also has super-strong directivity, and the directional sounding of the display panel is realized.

The display panel may be a rigid display panel or a flexible display panel (i.e., bendable and foldable); the type of the display panel may be a liquid crystal display panel such as a TN (Twisted Nematic), VA (Vertical Alignment), IPS (In-Plane Switching) or ADS (Advanced Super Dimension Switch, advanced super-dimensional field Switching) type, or may also be an OLED (Organic Light-Emitting Diode) display panel; alternatively, the display panel may be a Micro LED display panel or a Mini LED display panel, which is not limited herein.

The driving board may include a PCB (Printed Circuit Board ) that may supply signals to the first and second electrodes, respectively, through the first connection portion.

In the display module, the sounding unit can be bound with the driving plate through the first connecting part formed by the second vibrating diaphragm, the first lead and the second lead, so that a binding area is prevented from being reserved independently, the area needing shielding of the frame is reduced, the requirement of a narrow frame can be met, and the full-face screen is realized; meanwhile, the second vibrating diaphragm and the first vibrating diaphragm are of an integrated structure, so that screen integration is facilitated.

Fig. 1 is a schematic structural diagram of a display module of the related art, which includes a liquid crystal panel 61, a PCB board 52, an FPC board 51, a sound driving structure 56 and a vibration structure 57, wherein the sound driving structure 56 and the vibration structure 57 form a sound assembly; in the structure shown in fig. 1, an FPC board 51 and a reserved binding area are required to be additionally arranged to realize transmission of control signals to the sounding driving structure, and in the structure, an area C0 is required to be shielded in a subsequent process; fig. 2 is a schematic structural diagram of a display module provided by the application, and the sounding unit can be bound with the driving board through a first connection portion formed by a second vibrating diaphragm, a first lead and a second lead, so that a binding area is prevented from being reserved independently, and only an area C1 is required to be shielded. Comparing fig. 1 and fig. 2 can directly show that the area to be shielded in the structure shown in fig. 2 is reduced, the frame is narrow, and meanwhile, the screen integration is realized.

In fig. 2, the structure of the sound generating unit between the first diaphragm and the display panel is denoted by N, and the specific structure of this portion may be shown with reference to fig. 13 and 14. In addition, in fig. 18, 19, 23 and 27, a specific structure denoted by N may be shown with reference to fig. 13 and 14, and will not be described in detail later.

Fig. 3 is a schematic structural view of a first diaphragm and a second diaphragm; FIG. 4 is a schematic diagram of a second transparent sub-electrode; FIG. 5 is a schematic diagram of a second metal sub-electrode; fig. 6 is a schematic structural view after forming a second transparent sub-electrode and a second metal sub-electrode in sequence on the basis of fig. 3, and fig. 6 is a schematic structural view looking at the first vibrating membrane along the light emitting direction; fig. 7 is a schematic structural view after forming the second insulating layer on the basis of fig. 6, and fig. 7 is a schematic structural view looking toward the first diaphragm in the light emitting direction.

FIG. 8 is a schematic view of the structure of a first transparent sub-electrode; FIG. 9 is a schematic diagram of a first metal sub-electrode; fig. 10 is a schematic structural view after forming the first metal sub-electrode on the basis of fig. 8, and fig. 10 is a schematic structural view looking into the first transparent sub-electrode in a direction opposite to the light emitting direction; fig. 11 is a schematic structural view of the first insulating layer formed on the basis of fig. 10, and fig. 11 is a schematic structural view of the first transparent sub-electrode viewed in a direction opposite to the light emitting direction; fig. 12 is a schematic structural view of the support layer and the adhesive layer formed in this order on the basis of fig. 11, and fig. 12 is a schematic structural view of the first transparent sub-electrode viewed in the direction opposite to the light emitting direction.

In addition, the structures shown in fig. 7 and 12 may be formed, respectively, and then the side of fig. 7 where the second insulating layer is provided and the side of fig. 12 where the adhesive layer is provided are bonded together, thereby forming the sound emitting unit shown in fig. 13 and 14.

Optionally, in order to enhance the directional sound production effect as much as possible while avoiding the influence on the display effect of the display panel as much as possible, as shown in conjunction with fig. 10 and 13, the first electrode 11 includes a first transparent sub-electrode 111 and a first metal sub-electrode 112; the first metal sub-electrode 112 is disposed on a side of the first transparent sub-electrode 111 away from the display panel 2 and is electrically connected to the first transparent sub-electrode; wherein the conductive part is in contact with the first metal sub-electrode.

The shapes of the first transparent sub-electrode and the first metal sub-electrode are not limited. Since the first transparent sub-electrode has high light transmittance, it may be disposed corresponding to the entire display area of the display panel as shown in fig. 8. The poor light transmittance of the first metal sub-electrode can affect the display effect, and can be correspondingly arranged in a non-display area of the display panel, and at this time, the first metal sub-electrode can be arranged in a shape of a Chinese character 'kou' as shown in fig. 9; alternatively, the first metal sub-electrodes may be disposed in a mesh shape in correspondence with the regions between adjacent sub-pixels in the display area of the display panel.

The materials of the first transparent sub-electrode and the first metal sub-electrode are not limited. Illustratively, the material of the first transparent sub-electrode may include ITO (Indium Tin Oxide); the material of the first metal sub-electrode may include a conductive metal such as copper, silver, or aluminum.

Optionally, in order to enhance the directional sound production effect as much as possible while avoiding the influence on the display effect of the display panel as much as possible, as shown in conjunction with fig. 6 and 13, the second electrode 12 includes a second transparent sub-electrode 121 and a second metal sub-electrode 122; the second metal sub-electrode 122 is disposed on one side of the second transparent sub-electrode 121 near the display panel 2 and is electrically connected to the second transparent sub-electrode; wherein the second metal sub-electrode is connected to the second lead.

The shapes of the second transparent sub-electrode and the second metal sub-electrode are not limited. The second transparent sub-electrode has high light transmittance and can be arranged corresponding to the whole display area of the display panel. The poor light transmittance of the second metal sub-electrode can affect the display effect and can be correspondingly arranged in a non-display area of the display panel, and at the moment, the second metal sub-electrode can be arranged in a shape of a Chinese character kou; alternatively, the second metal sub-electrodes may be disposed in a mesh shape in correspondence with the regions between adjacent sub-pixels in the display area of the display panel.

The materials of the second transparent sub-electrode and the second metal sub-electrode are not limited. Illustratively, the material of the second transparent sub-electrode may include ITO (Indium Tin Oxide); the material of the second metal sub-electrode may include a conductive metal such as copper, silver, or aluminum.

Optionally, in order to reduce the number of patterning processes and reduce the production cost, the second metal sub-electrode, the first lead and the second lead are arranged in the same layer. That is, the second metal sub-electrode, the first lead, and the second lead may be formed using a one-time patterning process. In this case, the second metal sub-electrode, the first lead and the second lead may be made of conductive metal such as copper, silver or aluminum.

Alternatively, referring to fig. 3, the body region 4 includes a central region 41 and an edge region 42 surrounding the central region 41; the display panel comprises a display area and a non-display area surrounding the display area; the center region corresponds to the display region and the edge region corresponds to the non-display region.

As shown in fig. 3 and 8, the first transparent sub-electrode 111 includes a planar electrode and is located at a central region and an edge region; as shown in fig. 3 and 9, the first metal sub-electrode 112 includes a ring electrode and is located in an edge region; as shown in fig. 10 and 13, the first transparent sub-electrode 111 is in contact with the first metal sub-electrode 112. As shown in fig. 11, 12 and 13, the sound generating unit further includes a first insulating layer 19 located in the body region, the first insulating layer 19 covering the first transparent sub-electrode 111 and the first metal sub-electrode 112 and exposing a portion of the first metal sub-electrode; referring to fig. 14, the conductive portion 17 is in contact with a portion (denoted by M in fig. 12) of the first metal sub-electrode 112 not covered with the first insulating layer 19.

The display area of the display panel refers to an area for realizing display, and the non-display area is generally used for setting a driving circuit or the like.

Referring to fig. 12, a portion of the first metal sub-electrode 112 not covered by the first insulating layer 19 is denoted as M, and referring to fig. 14, the conductive portion 17 may be in direct contact with M such that the conductive portion is electrically connected to the first metal sub-electrode.

The first electrode has the advantages of simple structure, easy realization and low manufacturing cost.

Further alternatively, as shown in connection with fig. 3-6, the edge region 42 includes a first region 43; the second transparent sub-electrode 121 includes a planar electrode, and the second transparent sub-electrode 121 is located in the central region 41 and the region other than the first region 43 in the edge region 42; the second metal sub-electrode 122 includes a ring-shaped electrode and is located in a region other than the first region 43 in the edge region 42; the conductive portion 17 is disposed on a side of the first diaphragm adjacent to the display panel and is located in the first region 43.

Referring to fig. 5, the second metal sub-electrode 122 is not disposed in the first region 43, i.e., the second metal sub-electrode is a ring-shaped electrode with a notch.

The material of the conductive portion is not limited, and may be, for example, a conductive paste, which may be doped with conductive particles.

It should be noted that, the position of the part of the first metal sub-electrode, which is not covered by the first insulating layer, may be set corresponding to the first region, so that the structure of the conductive portion may be simplified, which is beneficial to reducing the manufacturing difficulty. Of course, if the position of the part of the first metal sub-electrode not covered by the first insulating layer does not correspond to the first region, the conductive part and the first metal sub-electrode may be electrically connected by a structure such as a trace.

In order to simplify the structures of the first and second leads, referring to fig. 6, the second diaphragm is connected to at least a portion of the first diaphragm located in the first region, and the conductive portion 17 is connected to the first lead 15.

Referring to fig. 6, the second lead 16 may be disposed at both left and right sides of the first lead 16 while the second lead 16 is directly connected to the second metal sub-electrode 122.

Further alternatively, as shown in connection with fig. 7 and 13, the sound generating unit further comprises a second insulating layer 20; the second insulating layer 20 is at least located in the body region 4; of course, as shown with reference to fig. 7, in order to avoid the first and second leads 15 and 16 from affecting each other, the second insulating layer 20 may also be disposed between the first and second leads 15 and 16.

Referring to fig. 14, the orthographic projections of the second metal sub-electrode 122 and the second transparent sub-electrode 121 on the display panel are located within the orthographic projection of the second insulating layer 20 on the display panel, respectively, and the orthographic projection of the conductive portion 17 on the display panel does not overlap with the orthographic projection of the second insulating layer 20 on the display panel.

Thus, the side of the conductive part far away from the first vibrating membrane is not provided with the second insulating layer, so that the conductive part is in direct contact with the first metal sub-electrode; meanwhile, the second insulating layer isolates the conductive part from the second metal sub-electrode and the second transparent sub-electrode respectively, so that the conductive part is prevented from being electrically connected with any one of the second metal sub-electrode and the second transparent sub-electrode, and further the quality and the stability of a product are improved.

It should be noted that, the sound generating unit may further include the adhesive layer 35 shown in fig. 12 and 13, and the adhesive layer 35 may be disposed in an area other than the first area 43 in the edge area 42, which may be continuously disposed, or may be intermittently disposed as shown in fig. 12; to facilitate the vibration of the first diaphragm, a discontinuous arrangement may be employed. The material of the bonding layer can adopt OCA (Optically Clear Adhesive, optical adhesive).

In one or more embodiments, as shown in connection with fig. 18, 19 and 23, the display panel includes a first substrate 21 and a second substrate 22 disposed opposite to each other; the first substrate is disposed between the sound generating unit and the second substrate.

As shown in fig. 18, 19 and 23, the display panel further includes a first polarizer 23, the first polarizer 23 including a first portion 231, and a second portion 232 connected to one side of the first portion 231; the first part is arranged on one side of the second electrode away from the first substrate and also serves as a first vibrating membrane; the part of the first polarizer extending out of the edge of the first substrate is a second part, and the second part also serves as a second vibrating membrane.

The first polarizer may include a polarizing layer, and protective layers disposed on two sides of the polarizing layer, wherein the polarizing layer may be made of PVA (Polyvinyl Alcohol ), and the protective layers may be made of TAC (Triacetyl Cellulose, cellulose triacetate). The polarizer can be bent, and conductive structures such as leads and the like can be arranged on the surface of the polarizer. One end of the second portion of the first polarizer, which is bound to the driving plate, may be shaped like an FPC.

Of course, the display panel further includes another polarizing plate (labeled 230 in fig. 18, 19 and 23) disposed on a side of the second substrate away from the first substrate. Other structures included in the display panel are not described in detail herein, and reference may be made to the related art for details.

The display panel can be applied to a liquid crystal display panel, wherein one of the first substrate and the second substrate is a color film substrate (also called a CF substrate), and the other is an array substrate (also called a TFT substrate). In the display module, the first part of the first polaroid is multiplexed into the first vibrating membrane, and the second part of the first polaroid is multiplexed into the second vibrating membrane, so that the first vibrating membrane and the second vibrating membrane are not required to be additionally arranged, the structure is greatly simplified, and the manufacturing cost is reduced; meanwhile, the thickness of the product can be reduced, and the portability is improved.

Alternatively, referring to fig. 18 and 19, the first substrate includes a color film substrate, and the second substrate includes an array substrate. In the display panel, referring to fig. 18 and 19, one side of the second substrate 22 protrudes from the first substrate 21, and a portion of the second substrate protruding from the first substrate is used for disposing a chip unit 24, and a bonding terminal 25, etc., the chip unit may include an IC (Integrated Circuit ), and the bonding terminal 25 may be bonded to the driving board 3 through a second connection part 31 (e.g., FPC board), thereby facilitating the driving board to transmit a driving signal to the display panel.

Fig. 15 and 16 are related art display modules, and in combination with fig. 15 and 16, a binding area needs to be additionally reserved on a side of the color film substrate 551 away from the array substrate 552, and a first FPC board 51 is disposed, so that a driving signal is provided to the sound generating unit by the PCB board 52 through the first FPC board 51. In fig. 15 and 16, the area to be masked is the E area. In fig. 15 and 16, an IC unit 54 and a second FPC board may be further disposed on the array substrate 552, and the PCB board 52 provides driving signals to the array substrate 552 through the second FPC board 53; the sounding driving structure 56 is further provided with a first POL (polarization) layer 58 at a side far from the display panel, and the array substrate 552 is further provided with a second POL (polarization) layer 59 at a side far from the color film substrate 551. In addition, a specific structure denoted by 55 in fig. 15 can be shown with reference to fig. 16.

Fig. 17-19 are schematic views of a display module according to an embodiment of the present invention, in fig. 18 and 19, the second portion 232 of the first polarizer 23 is directly bound to the driving board 3, so as to avoid reserving a binding area and setting an FPC, and the shielding area is an F area, and compared with fig. 16 and 18, the shielding area is greatly reduced, so that an extremely narrow frame is realized, and meanwhile, screen integration is realized. In addition, a specific structure denoted by 5 in fig. 17 can be shown with reference to fig. 18 and 19.

Alternatively, the first substrate includes an array substrate, and the second substrate includes a color film substrate. The display panel belongs to a panel with an array substrate reversely arranged, and as shown in fig. 22 and 23, one side of the first substrate 21 extends out of the second substrate 22, a part of the first substrate extending out of the second substrate is used for setting a chip unit 24, and a binding end 25, etc., the chip unit may include an IC (Integrated Circuit ), and the binding end 25 may be in binding connection with the driving board 3 through a second connection part 31 (for example, an FPC board), so that the driving board is convenient for transmitting driving signals to the display panel.

Fig. 20 and 21 are related art display modules, and in combination with fig. 20 and 21, a binding area needs to be additionally reserved on one side of the array substrate 552 away from the color film substrate 551, and meanwhile, a first FPC board 51 is provided, so that the PCB board 52 provides a driving signal to the sound generating unit through the first FPC board 51. In fig. 20 and 21, the region to be masked is the E1 region. In fig. 20 and 21, an IC unit 54 and a second FPC board may be further disposed on the array substrate 552, and the PCB board 52 provides driving signals to the array substrate 552 through the second FPC board 53; the sounding driving structure 56 is further provided with a first POL (polarization) layer 58 on a side far from the display panel, and the array substrate 552 is further provided with a second POL (polarization) layer 59 on a side far from the color film substrate 551. In addition, a specific structure denoted by 55 in fig. 20 can be shown with reference to fig. 21.

Fig. 22 and fig. 23 are schematic views of a display module according to an embodiment of the present invention, in fig. 23, a second portion 232 of a first polarizing plate 23 is directly bound with a driving plate 3, so as to avoid reserving a binding area and setting an FPC, and a shielding area is an F1 area, and compared with fig. 21 and fig. 23, the shielding area is greatly reduced, so that an extremely narrow frame is realized, and meanwhile, screen integration is realized. In addition, a specific structure denoted by 5 in fig. 22 can be shown with reference to fig. 23.

In one or more embodiments, referring to fig. 26 and 27, the display panel includes a cover plate 27, a second polarizer 28, and color film substrates 29 and array substrates 30 disposed opposite to each other; the cover plate 27 is disposed on a side of the color film substrate 29 away from the array substrate 20, the second polarizer 28 is disposed between the cover plate 27 and the color film substrate 29, and the sounding unit (not labeled in fig. 27) is disposed on a side of the cover plate 27 away from the array substrate 29. As shown in fig. 26 and 27, a color film substrate 29 is extended from one side of the array substrate 30, a portion of the array substrate 30 extending from the color film substrate 29 is used to provide a chip unit 24, and a binding end 25, etc., the chip unit may include an IC (Integrated Circuit ), and the binding end 25 may be bound and connected with the driving board 3 through a second connection part 31 (e.g., FPC board), so that the driving board is convenient for transmitting driving signals to the display panel.

Fig. 24 and 25 are related art display modules, and in combination with fig. 24 and 25, a binding area needs to be additionally reserved on one side of the glass cover plate 60 away from the color film substrate 551, and meanwhile, a first FPC board 51 is provided, so that the PCB board 52 provides a driving signal for the sound generating unit through the first FPC board 51. In fig. 24 and 25, the region to be masked is the E2 region. In fig. 24 and 25, an IC unit 54 and a second FPC board may be further disposed on the array substrate 552, and the PCB board 52 provides driving signals to the array substrate 552 through the second FPC board 53; the side of the sounding driving structure 56 away from the display panel is further provided with a vibrating structure 57, the side of the glass cover plate 60 close to the color film substrate 551 is further provided with a first POL (polarization) layer 58, and the side of the array substrate 552 away from the color film substrate 551 is further provided with a second POL (polarization) layer 59. In addition, a specific structure denoted by 55 in fig. 24 can be shown with reference to fig. 25.

Fig. 26 and fig. 27 are diagrams showing a display module according to an embodiment of the present invention, in fig. 27, the second vibration film 14 is directly bound with the driving board 3, so as to avoid reserving a binding area and setting an FPC, and a shielding area is an F2 area, compared with fig. 25 and fig. 27, the shielding area is greatly reduced, thereby realizing an extremely narrow frame and simultaneously realizing screen integration. In addition, a specific structure denoted by 5 in fig. 26 can be shown with reference to fig. 27.

Referring to fig. 27, the display panel may further include an ink light shielding layer 40 disposed between the cover plate 27 and the second polarizer 28, and another polarizer (denoted as 230 in fig. 27) disposed on a side of the second substrate remote from the first substrate. Other structures included in the display panel are not described in detail herein, and reference may be made to the related art for details.

Optionally, referring to fig. 18, 19, 23, and 27, the display module further includes a second connection portion 31, and the array substrate further includes a binding end 25; two ends of the second connection part 31 are respectively connected with the binding end 25 and the driving plate 3 in a binding way, so that the driving plate provides driving signals for the array substrate.

The second connection part may include an FPC. The second connection portion and the first connection portion may be disposed on the same side of the display module, or may be disposed on different sides, which is not limited herein.

Optionally, to facilitate binding while further reducing the frame, the first and second connection portions are disposed on the same side of the display panel, i.e., as shown with reference to fig. 18, 19, 23, and 27, the first and second connection portions (including the second diaphragm 14) and 31 are disposed on the left side of the display panel

Alternatively, referring to fig. 19, the first connection part (not labeled in fig. 19) and the second connection part 31 are bound on the same side of the driving board 3, i.e., single-sided binding; alternatively, referring to fig. 18, the first connection part (not labeled in fig. 19) and the second connection part 31 are respectively bound at opposite sides of the driving plate 3, i.e., double-sided binding.

It should be noted that if the driving plate is bent to the back of the display panel, one-sided binding may be selected, thereby facilitating bending. If the driving plate is not bent to the back of the display panel, double-sided binding can be selected to facilitate the wiring design of the driving plate.

The embodiment of the invention also provides a display device which comprises the display module. The display device may be a rigid display device or a flexible display device (i.e., bendable and foldable). The type thereof may be a liquid crystal display device of TN (Twisted Nematic), VA (Vertical Alignment ), IPS (In-Plane Switching) or ADS (Advanced Super Dimension Switch, advanced super-dimensional field Switching) type, or the like; alternatively, an OLED (Organic Light-Emitting Diode) display device may be used; alternatively, the display device may be a Micro LED display device or a Mini LED display device, and any product or component having a display function, such as a television, a digital camera, a mobile phone, a tablet computer, or the like, including these display devices. The display device has narrow frame, and can realize comprehensive screen and screen integration.

Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Furthermore, it is noted that the word examples "in one embodiment" herein do not necessarily all refer to the same embodiment.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the present application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. The display module is characterized by comprising a sound generating unit, a display panel and a driving plate, wherein the sound generating unit is arranged on the light emitting side of the display panel;

wherein the second electrode is electrically connected with the second lead; the body region further comprises a conductive portion insulated from the second electrode and electrically connected to the first lead and the first electrode, respectively;

2. The display module of claim 1, wherein the first electrode comprises a first transparent sub-electrode and a first metal sub-electrode; the first metal sub-electrode is arranged on one side of the first transparent sub-electrode far away from the display panel and is electrically connected with the first transparent sub-electrode;

Wherein the conductive part is in contact with the first metal sub-electrode.

3. The display module of claim 2, wherein the second electrode comprises a second transparent sub-electrode and a second metal sub-electrode; the second metal sub-electrode is arranged on one side of the second transparent sub-electrode, which is close to the display panel, and is electrically connected with the second transparent sub-electrode;

wherein the second metal sub-electrode is connected with the second lead.

4. A display module according to claim 3, wherein the second metal sub-electrode, the first lead and the second lead are arranged in the same layer.

5. A display module according to claim 3, wherein the body region comprises a central region and an edge region surrounding the central region; the display panel includes a display region and a non-display region surrounding the display region; the central area corresponds to the display area, and the edge area corresponds to the non-display area;

6. The display module of claim 5, wherein the edge region comprises a first region;

7. The display module of claim 6, wherein the second diaphragm is connected to at least a portion of the first diaphragm located in the first region, and the conductive portion is connected to the first lead.

8. The display module of claim 6, wherein the sound generating unit further comprises a second insulating layer; the second insulating layer is at least positioned in the body region;

9. The display module of claim 1, wherein the display panel comprises a first substrate and a second substrate disposed opposite to each other; the first substrate is arranged between the sound generating unit and the second substrate;

10. The display module of claim 9, wherein the first substrate comprises a color film substrate and the second substrate comprises an array substrate;

11. The display module of claim 1, wherein the display panel comprises a cover plate, a second polarizer, and a color film substrate and an array substrate which are oppositely arranged; the cover plate is arranged on one side, far away from the array substrate, of the color film substrate, the second polaroid is arranged between the cover plate and the color film substrate, and the sounding unit is arranged on one side, far away from the array substrate, of the cover plate.

12. The display module of any one of claims 9-11, wherein the display module further comprises a second connection portion, and the array substrate further comprises a binding end;

13. The display module of claim 12, wherein the first connection portion and the second connection portion are disposed on a same side of the display panel.

14. The display module assembly of claim 12, wherein the first connection portion and the second connection portion are bound on a same side of the drive plate; or the first connecting part and the second connecting part are respectively bound at two opposite sides of the driving plate.

15. A display device comprising the display module of any one of claims 1-14.