A display module and a display device

Abstract

The present invention provides a display module and a display device, relating to the field of display technology. The display device has a small border and can meet the requirements of a narrow border. The display module includes a sound generating unit, a display panel, and a driving board; the sound generating unit includes a body area and an extending area connected to one side of the body area; the body area includes a first electrode, a support layer, a second electrode, and a first vibration film sequentially stacked on the display panel; the extending area includes a second vibration film, a first lead, and a second lead, and the second vibration film and the first vibration film are an integral structure; the second electrode is electrically connected to the second lead; the body area further includes a conductive part, which is insulated from the second electrode and electrically connected to the first lead and the first electrode respectively; the second vibration film, the first lead, and the second lead form a first connection part, and the first connection part is bonded and connected to the driving board.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display module and a display device. Background Art

[0002] Currently, a display device needs to separately provide a sound generating device (e.g., a speaker) to achieve sound output. However, users' requirements for narrow bezels of display devices are getting higher and higher, leaving less and less space for the sound generating device. Therefore, a screen sound generating display device has emerged. However, the current screen sound generating display device has a relatively wide bezel, which is difficult to meet the requirement of a narrow bezel, and thus a full screen cannot be achieved. Summary of the Invention

[0003] Embodiments of the present invention provide a display module and a display device. The display device has a small bezel, can meet the requirement of a narrow bezel, and is conducive to achieving a full screen.

[0004] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0005] On the one hand, a display module is provided, including a sound generating unit, a display panel, and a driving board. The sound generating unit is disposed on the light-emitting side of the display panel;

[0006] The sound generating unit includes a main body area and an extending area connected to one side of the main body area;

[0007] The main body area includes a first electrode, a support layer, a second electrode, and a first vibration film that are sequentially stacked on the display panel; the first electrode and the second electrode are insulated;

[0008] The extending area includes a second vibration film, a first lead, and a second lead. The second vibration film and the first vibration film are of an integral structure; the first lead and the second lead are insulated and disposed on one side of the second vibration film;

[0009] Wherein, the second electrode is electrically connected to the second lead; the main body area further includes a conductive part, which is insulated from the second electrode and electrically connected to the first lead and the first electrode respectively;

[0010] The second vibration film, the first lead, and the second lead form a first connection part, and the first connection part is bonded and connected to the driving board.

[0011] Optionally, the first electrode includes a first transparent sub-electrode and a first metal sub-electrode; the first metal sub-electrode is disposed on the side of the first transparent sub-electrode away from the display panel and is electrically connected to the first transparent sub-electrode;

[0012] Among them, the conductive part is in contact with the first metal sub - electrode.

[0013] Optionally, the second electrode includes a second transparent sub - electrode and a second metal sub - electrode; the second metal sub - electrode is disposed on a side of the second transparent sub - electrode close to the display panel and is electrically connected to the second transparent sub - electrode;

[0014] Among them, the second metal sub - electrode is connected to the second lead.

[0015] Optionally, the second metal sub - electrode, the first lead, and the second lead are disposed in the same layer.

[0016] 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 region corresponds to the display region, and the edge region corresponds to the non - display region;

[0017] The first transparent sub - electrode includes a planar electrode and is located in the central region and the edge region; the first metal sub - electrode includes an annular electrode and is located in the edge region; the first transparent sub - electrode and the first metal sub - electrode are in contact;

[0018] The sound - generating unit further includes a first insulating layer located in the body region, the first insulating layer covers the first transparent sub - electrode and the first metal sub - electrode and exposes a part of the first metal sub - electrode;

[0019] The conductive part is in contact with a part of the first metal sub - electrode that is not covered by the first insulating layer.

[0020] Optionally, the edge region includes a first region;

[0021] The second transparent sub - electrode includes a planar electrode, and the second transparent sub - electrode is located in the central region and a region of the edge region other than the first region;

[0022] The second metal sub - electrode includes an annular electrode and is located in a region of the edge region other than the first region;

[0023] The conductive part is disposed on a side of the first vibration film close to the display panel and is located in the first region.

[0024] Optionally, the second vibration film is at least connected to a part of the first vibration film located in the first region, and the conductive part is connected to the first lead.

[0025] Optionally, the sound - generating unit further includes a second insulating layer; the second insulating layer is at least located in the body region;

[0026] The positive projections of the second metal sub-electrode and the second transparent sub-electrode on the display panel are located within the positive projection of the second insulating layer on the display panel, and the positive projection of the conductive portion on the display panel does not overlap with the positive projection of the second insulating layer on the display panel.

[0027] Optionally, the display panel includes a first substrate and a second substrate disposed opposite to each other; the first substrate is disposed between the sound generating unit and the second substrate;

[0028] The display panel further includes a first polarizer, the first polarizer includes a first portion and a second portion connected to one side of the first portion; the first portion is disposed on the side of the second electrode away from the first substrate and also serves as the first vibration film; the portion of the first polarizer extending beyond the edge of the first substrate is the second portion, and the second portion also serves as the second vibration film.

[0029] Optionally, the first substrate includes a color filter substrate, and the second substrate includes an array substrate;

[0030] Or, the first substrate includes an array substrate, and the second substrate includes a color filter substrate.

[0031] Optionally, the display panel includes a cover plate, a second polarizer, and a color filter substrate and an array substrate disposed opposite to each other; the cover plate is disposed on the side of the color filter substrate away from the array substrate, the second polarizer is disposed between the cover plate and the color filter substrate, and the sound generating unit is disposed on the side of the cover plate away from the array substrate.

[0032] Optionally, the display module further includes a second connection portion, and the array substrate further includes a bonding end;

[0033] Both ends of the second connection portion are respectively bonded and connected to the bonding end and the driving board.

[0034] Optionally, the first connection portion and the second connection portion are disposed on the same side of the display panel.

[0035] Optionally, the first connection portion and the second connection portion are bonded on the same side of the driving board; or, the first connection portion and the second connection portion are respectively bonded on opposite sides of the driving board.

[0036] On the other hand, a display device is provided, including: the above display module.

[0037] Embodiments of the present invention provide a display module and a display device. The display module includes a sound - generating unit, a display panel, and a driving board. The sound - generating unit is disposed on the light - emitting side of the display panel. The sound - generating unit includes a body region and an extending region connected to one side of the body region. The body region includes a first electrode, a support layer, a second electrode, and a first vibration film stacked in sequence on the display panel. The first electrode and the second electrode are insulated from each other. The extending region includes a second vibration film, a first lead, and a second lead. The second vibration film and the first vibration film are of an integral structure. The first lead and the second lead are insulated from each other and are disposed on one side of the second vibration film. Wherein, the second electrode is electrically connected to the second lead. The body region further includes a conductive portion. The conductive portion is insulated from the second electrode and is electrically connected to the first lead and the first electrode respectively. The second vibration film, the first lead, and the second lead form a first connection portion. The first connection portion is bonded to the driving board. In this display module, the sound - generating unit can be bonded to the driving board through the first connection portion formed by the second vibration film, the first lead, and the second lead, thus avoiding separately reserving a bonding area, further reducing the area that needs to be blocked by the border, meeting the requirements of a narrow border, and being beneficial to realizing a full - screen display. At the same time, the second vibration film and the first vibration film are of an integral structure, which is beneficial to realizing screen integration.

[0038] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of this application more obvious and understandable, the following specifically describes the specific embodiments of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 and Figure 2 are schematic structural diagrams of two display modules provided by embodiments of the present invention;

[0041] Figure 3 is a schematic structural diagram of a first vibration film and a second vibration film provided by an embodiment of the present invention;

[0042] Figure 4 is a schematic structural diagram of a second transparent sub - electrode provided by an embodiment of the present invention;

[0043] Figure 5 Schematic diagram of a second metal sub - electrode provided by an embodiment of the present invention;

[0044] Figure 6 Schematic diagram after successively forming a second transparent sub - electrode and a second metal sub - electrode on the basis of; Figure 3 the present invention's embodiment;

[0045] Figure 7 Schematic diagram after forming a second insulating layer on the basis of; Figure 6 the present invention's embodiment;

[0046] Figure 8 Schematic diagram of a first transparent sub - electrode provided by an embodiment of the present invention;

[0047] Figure 9 Schematic diagram of a first metal sub - electrode provided by an embodiment of the present invention;

[0048] Figure 10 Schematic diagram after forming a first metal sub - electrode on the basis of; Figure 8 the present invention's embodiment;

[0049] Figure 11 Schematic diagram after forming a first insulating layer on the basis of; Figure 10 the present invention's embodiment;

[0050] Figure 12 Schematic diagram after successively forming a support layer and an adhesive layer on the basis of; Figure 11 the present invention's embodiment;

[0051] Figure 13 Along; Figure 12 Schematic cross - sectional view of the display module in the AA' direction in;

[0052] Figure 14 Along; Figure 12 Schematic cross - sectional view of the display module in the DD' direction in;

[0053] Figure 15 、 Figure 20 、 Figure 24 Schematic diagrams of various display modules in the related art;

[0054] Figure 16 、 Figure 21 、 Figure 25 Are respectively; Figure 15 、 Figure 20 、 Figure 24 side views;

[0055] Figure 17 、 Figure 22 、Figure 26 Schematic diagrams of multiple display modules provided by embodiments of the present invention;

[0056] Figure 18 and Figure 19 are Figure 17 two side views of;

[0057] Figure 23 and Figure 27 are respectively Figure 22 and Figure 26 side views of. Detailed implementation manners

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] In the embodiments of the present invention, the same items or similar items with basically the same functions and effects are distinguished by using terms such as "first" and "second" only for clearly describing the technical solutions in the embodiments of the present invention, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0060] In the embodiments of the present invention, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0061] Embodiments of the present invention provide a display module. Referring to Figure 2 as shown, the display module includes: a sound generating unit 1, a display panel 2, and a driving board 3. The sound generating unit 1 is disposed on the light-emitting side of the display panel 2.

[0062] Combined with Figure 3 and Figure 6 as shown, the sound generating unit 1 includes a main body area 4 and an extending area 5 connected to one side of the main body area 4.

[0063] Combined with Figure 6 and Figure 10 and Figure 13 as shown, the main body area 4 includes a first electrode 11, a support layer 10, a second electrode 12, and a first vibration film 13 that are sequentially stacked on the display panel; the first electrode 11 and the second electrode 12 are insulated.

[0064] Combined withFigure 3 and Figure 6 As shown in Figure 6 , the extending area 5 includes the second vibrating film 14, the first lead 15 and the second lead 16. The second vibrating film 14 and the first vibrating film 13 are of an integral structure. The first lead and the second lead are insulated and arranged on one side of the second vibrating film.

[0065] Among them, the second electrode is electrically connected to the second lead; combined Figure 6 , Figure 7 and Figure 14 As shown in Figure 7 and Figure 14 , the body area 4 further includes a conductive part 17. The conductive part 17 is insulated from the second electrode 12 and is electrically connected to the first lead 15 and the first electrode 11 respectively.

[0066] Combined Figure 3 and Figure 6 As shown in Figure 3 and Figure 6 , the second vibrating film 14, the first lead 15 and the second lead 16 form a first connection part 18. The first connection part is bonded and connected to the driving plate.

[0067] In the body area of the above-mentioned sound generating unit, the first electrode may include only one layer of sub-electrodes or multiple layers of sub-electrodes. For example: two layers of sub-electrodes, which is not limited here. Similarly, the second electrode may include only one layer of sub-electrodes or multiple layers of sub-electrodes. For example: two layers of sub-electrodes, which is not limited here.

[0068] In the body area of the above-mentioned sound generating unit, the specific structure of the support layer is not limited. By way of example, combined Figure 12 and Figure 13 As shown in Figure 12 and Figure 13 , the support layer 10 may include a plurality of independently arranged spacer parts 36. A gap 37 is provided between adjacent spacer parts 36, so as to jointly form a vibration cavity with the first electrode and the second electrode on both sides of the support layer. The shape of the spacer part is not limited here. By way of example, the shape of the spacer part may be a cylinder, a frustum, a truncated cone or a prism, etc. The cross-section of the spacer part may be a circle, a trapezoid or a triangle, etc. Figure 12 Taking the cross-section of the spacer part as a circle as an example for illustration, it should be noted that the cross-section of the spacer part refers to the cross-section along the Figure 12 OB direction shown in Figure 12 .

[0069] The first vibration membrane and the second vibration membrane are an integrated structure, that is, they can be formed at one time using the same process. The specific formation process is not limited here. For example, they can be formed by a room temperature sputtering process. It should be noted that since the second vibration membrane is bound to the driving plate, the second vibration membrane needs to have a certain flexibility, which is conducive to binding. The specific materials, thicknesses, etc. of the first vibration membrane and the second vibration membrane are not limited here. For example, the materials of the first vibration membrane and the second vibration membrane can be flexible films such as PET (Polyethylene Terephthalate) film. The first vibration membrane and the second vibration membrane can be provided separately, or can also be shared with the polarizer of the display panel, which is not limited here.

[0070] In order to reduce the number of patterning processes and reduce costs, the first lead and the second lead are arranged on the same layer, where the same layer arrangement refers to the formation by a single patterning process. A single patterning process refers to a process of forming the required layer structure through a single exposure. A single patterning process includes processes such as masking, exposure, development, etching and stripping. It should be noted that since the adhesion between the first lead and the second lead and the second vibration membrane is respectively weak, if the first lead and the second lead are formed directly on the second vibration membrane, undesirable phenomena such as peeling are prone to occur. In order to improve the adhesion and enhance stability, a buffer material such as silicon nitride can be first arranged on the second vibration membrane, and then the first lead and the second lead can be formed; at the same time, a room temperature sputtering process can be used to form the second vibration membrane.

[0071] The second vibration membrane, the first lead and the second lead constitute a first connection portion, which can be directly bound and connected to the driving board, thereby replacing the flexible printed circuit (FPC) of the related technology, while no binding area is reserved, reducing the frame.

[0072] The specific position, material and structure of the conductive part are not limited, as long as it can electrically connect the first lead and the second electrode.

[0073] The above-mentioned sound-emitting unit belongs to an electrostatic ultrasonic transducer, which is the structural basis for realizing directional sound emission. It uses electric field force to make the diaphragm vibrate to emit ultrasound. When the above-mentioned sound-emitting unit is working, a certain bias voltage will be applied to the first electrode and the second electrode, and an AC audio signal will be superimposed at the same time; the above-mentioned bias voltage overlaps with the original bias voltage of the first electrode and the second electrode, thereby forming an alternating pulsating electric field. Under the action of the electrostatic force of the alternating electric field, the first vibration membrane vibrates and then emits ultrasound. Based on the nonlinear acoustic effect, audible audio can be continuously demodulated during the propagation of ultrasound; at the same time, because ultrasonic propagation has super strong directivity, the demodulated audible audio also has super strong directivity, thereby realizing directional sound emission of the display panel.

[0074] The display panel can be a rigid display panel or a flexible display panel (i.e., bendable and foldable); its type can be a liquid crystal display panel such as TN (Twisted Nematic), VA (Vertical Alignment), IPS (In-Plane Switching), or ADS (Advanced Super Dimension Switch), or it can also be an OLED (Organic Light-Emitting Diode) display panel; or it can also be a Micro LED display panel or a Mini LED display panel, which is not limited here.

[0075] The above-mentioned driving board can include a PCB (Printed Circuit Board), and the driving board can provide signals to the first electrode and the second electrode respectively through the first connection part.

[0076] In this display module, the sound generating unit can be bound to the driving board through the first connection part composed of the second vibration film, the first lead wire, and the second lead wire, so as to avoid separately reserving a binding area, thereby reducing the area that needs to be blocked by the border, meeting the requirements of a narrow border, and being conducive to realizing a full-screen; at the same time, the second vibration film and the first vibration film are an integrated structure, which is conducive to realizing screen integration.

[0077] Figure 1 It is a schematic structural diagram of a display module in the related art, including a liquid crystal panel 61, a PCB board 52, an FPC board 51, a sound generating driving structure 56, and a vibration structure 57, wherein the sound generating driving structure 56 and the vibration structure 57 form a sound generating component; Figure 1 In the shown structure, an additional FPC board 51 and a reserved binding area are required to transmit control signals to the sound generating driving structure. In the subsequent process, area C0 needs to be blocked; Figure 2 It is a schematic structural diagram of a display module provided by the present application. The sound generating unit can be bound to the driving board through the first connection part composed of the second vibration film, the first lead wire, and the second lead wire, so as to avoid separately reserving a binding area, and only area C1 needs to be blocked. Figure 1 and Figure 2 By direct comparison, it can be obtained that Figure 2 the area that needs to be blocked in the shown structure is reduced, the border is narrow, and at the same time, screen integration is realized.

[0078] It should be noted that, in order to more clearly reflect the invention points and facilitate drawing, Figure 2In it, the structure of the sound - generating unit located between the first vibrating film and the display panel is marked as N. For the specific structure of this part, reference can be made to Figure 13 and Figure 14 as shown. Additionally, Figure 18 、 Figure 19 、 Figure 23 and Figure 27 In, for the specific structure marked as N, reference can be made to Figure 13 and Figure 14 as shown, and no further detailed description will be given hereafter.

[0079] Figure 3 is a schematic structural diagram of the first vibrating film and the second vibrating film; Figure 4 is a schematic structural diagram of the second transparent sub - electrode; Figure 5 is a schematic structural diagram of the second metal sub - electrode; Figure 6 is a schematic structural diagram after successively forming the second transparent sub - electrode and the second metal sub - electrode on the basis of Figure 3 , Figure 6 is a schematic structural diagram looking at the first vibrating film along the light - emitting direction; Figure 7 is a schematic structural diagram after forming the second insulating layer on the basis of Figure 6 , Figure 7 is a schematic structural diagram looking at the first vibrating film along the light - emitting direction.

[0080] Figure 8 is a schematic structural diagram of the first transparent sub - electrode; Figure 9 is a schematic structural diagram of the first metal sub - electrode; Figure 10 is a schematic structural diagram after forming the first metal sub - electrode on the basis of Figure 8 , Figure 10 is a schematic structural diagram looking at the first transparent sub - electrode along the reverse direction of the light - emitting direction; Figure 11 In Figure 10 after forming the first insulating layer on the basis of, Figure 11 is a schematic structural diagram looking at the first transparent sub - electrode along the reverse direction of the light - emitting direction; Figure 12 In Figure 11 after successively forming the support layer and the bonding layer on the basis of, Figure 12 is a schematic structural diagram looking at the first transparent sub - electrode along the reverse direction of the light - emitting direction.

[0081] Additionally, the structures shown in Figure 7 and Figure 12 can be formed separately, and then the side where the second insulating layer is set is bonded to the side where the bonding layer is set in Figure 7 to form the sound - generating unit shown in Figure 12 and Figure 13 and Figure 14 .

[0082] Optionally, in order to improve the directional sound emission effect as much as possible while minimizing the impact on the display effect of the display panel, in combination with Figure 10 and Figure 13 As shown, 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 portion is in contact with the first metal sub-electrode.

[0083] The shapes of the first transparent sub-electrode and the first metal sub-electrode are not limited. Since the first transparent sub-electrode has a high light transmittance, it can be provided over the entire display area of the display panel with reference to Figure 8 As shown. The first metal sub-electrode has a poor light transmittance and can affect the display effect. It can be correspondingly provided in the non-display area of the display panel. At this time, the first metal sub-electrode can be provided in a square shape as shown in Figure 9 ; or, it can be correspondingly provided in the area between adjacent sub-pixels in the display area of the display panel. At this time, the first metal sub-electrode can be provided in a mesh shape.

[0084] The materials of the first transparent sub-electrode and the first metal sub-electrode are not limited. By way of example, the material of the first transparent sub-electrode may include ITO (Indium Tin Oxide); the material of the first metal sub-electrode may include conductive metals such as copper, silver, or aluminum.

[0085] Optionally, in order to improve the directional sound emission effect as much as possible while minimizing the impact on the display effect of the display panel, in combination with Figure 6 and Figure 13 As shown, 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 a side of the second transparent sub-electrode 121 close to 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 wire.

[0086] The shapes of the second transparent sub-electrode and the second metal sub-electrode are not limited. Since the second transparent sub-electrode has a high light transmittance, it can be provided over the entire display area of the display panel. The second metal sub-electrode has a poor light transmittance and can affect the display effect. It can be correspondingly provided in the non-display area of the display panel. At this time, the second metal sub-electrode can be provided in a square shape; or, it can be correspondingly provided in the area between adjacent sub-pixels in the display area of the display panel. At this time, the second metal sub-electrode can be provided in a mesh shape.

[0087] The materials of the second transparent sub - electrode and the second metal sub - electrode are not limited. For example, the material of the second transparent sub - electrode may include ITO (Indium Tin Oxide); the material of the second metal sub - electrode may include conductive metals such as copper, silver, or aluminum.

[0088] Optionally, in order to reduce the number of patterning processes and lower the production cost, the second metal sub - electrode, the first lead, and the second lead are arranged on the same layer. That is, the second metal sub - electrode, the first lead, and the second lead can be formed by one patterning process. At this time, the second metal sub - electrode, the first lead, and the second lead can all be made of conductive metals such as copper, silver, or aluminum.

[0089] Optionally, referring to Figure 3 As shown, the body region 4 includes a central region 41 and a peripheral region 42 surrounding the central region 41; the display panel includes a display region and a non - display region surrounding the display region; the central region corresponds to the display region, and the peripheral region corresponds to the non - display region.

[0090] Combined with Figure 3 and Figure 8 As shown, the first transparent sub - electrode 111 includes a planar electrode and is located in the central region and the peripheral region; combined with Figure 3 and Figure 9 As shown, the first metal sub - electrode 112 includes an annular electrode and is located in the peripheral region; combined with Figure 10 and Figure 13 As shown, the first transparent sub - electrode 111 and the first metal sub - electrode 112 are in contact with each other. Combined with Figure 11 , Figure 12 and Figure 13 As shown, the sound - generating unit further includes a first insulating layer 19 located in the body region. The first insulating layer 19 covers the first transparent sub - electrode 111 and the first metal sub - electrode 112 and exposes a part of the first metal sub - electrode; referring to Figure 14 As shown, the conductive portion 17 is in contact with the portion of the first metal sub - electrode 112 that is not covered by the first insulating layer 19 ( Figure 12 marked as M in

[0091] The display region of the display panel refers to the region for realizing display, and the non - display region is generally used for arranging driving circuits, etc.

[0092] Referring to Figure 12 As shown, the portion of the first metal sub - electrode 112 that is not covered by the first insulating layer 19 is marked as M. Referring to Figure 14 As shown, the conductive portion 17 can be in direct contact with M, so that the conductive portion is electrically connected to the first metal electrode.

[0093] The structure of the above - mentioned first electrode is simple, easy to implement, and has a low manufacturing cost.

[0094] Further optionally, in combination with Figure 3 - 6 As shown, the edge region 42 includes a first region 43; the second transparent sub-electrode 121 includes a planar electrode, the second transparent sub-electrode 121 is located in the central region 41 and the region of the edge region 42 other than the first region 43; the second metal sub-electrode 122 includes an annular electrode and is located in the region of the edge region 42 other than the first region 43; the conductive portion 17 is disposed on the side of the first vibrating film close to the display panel and is located in the first region 43.

[0095] Referring to Figure 5 As shown, the above-mentioned second metal sub-electrode 122 is not provided in the first region 43, that is, the second metal sub-electrode is an annular electrode with a notch.

[0096] The material of the above-mentioned conductive portion is not limited. By way of example, it can be made of a conductive adhesive, and the conductive adhesive can be doped with conductive particles.

[0097] It should be noted that the position of the portion of the first metal sub-electrode not covered by the first insulating layer can be correspondingly set with the first region, which can simplify the structure of the conductive portion and is beneficial to reducing the manufacturing difficulty. Of course, if the position of the portion of the first metal sub-electrode not covered by the first insulating layer does not correspond to the first region, the electrical connection between the conductive portion and the first metal sub-electrode can be achieved through structures such as wiring.

[0098] In order to simplify the structures of the first lead and the second lead, referring to Figure 6 As shown, the second vibrating film is at least connected to the portion of the first vibrating film located in the first region, and the conductive portion 17 is connected to the first lead 15.

[0099] Referring to Figure 6 As shown, the second lead 16 can be disposed on the left and right sides of the first lead 16. At the same time, the second lead 16 is directly connected to the second metal sub-electrode 122.

[0100] Further optionally, in combination with Figure 7 and Figure 13 As shown, the sound generating unit further includes a second insulating layer 20; the second insulating layer 20 is at least located in the body region 4; of course, referring to Figure 7 As shown, in order to prevent the first lead 15 and the second lead 16 from affecting each other, the second insulating layer 20 can also be disposed between the first lead 15 and the second lead 16.

[0101] Referring to Figure 14 As shown, 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, 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.

[0102] In this way, on the side of the conductive part away from the first vibrating membrane, the second insulating layer is not provided, so that it is in direct contact with the first metal sub-electrode; at the same time, the second insulating layer isolates the conductive part from the second metal sub-electrode and the second transparent sub-electrode respectively, thereby avoiding electrical connection between the conductive part and any one of the second metal sub-electrode and the second transparent sub-electrode, and further improving the quality and stability of the product.

[0103] It should be noted that the sound generating unit may further include Figure 12 and Figure 13 the bonding layer 35 shown in the figure. The bonding layer 35 may be provided in the area of the edge region 42 other than the first region 43. It may be continuously provided, or may be intermittently provided as shown in Figure 12 the figure; in order to facilitate the vibration of the first vibrating membrane, intermittent setting may be adopted. The material of the bonding layer may be OCA (Optically Clear Adhesive).

[0104] In one or more embodiments, in combination with Figure 18 , Figure 19 and Figure 23 shown in the figure, the display panel includes a first substrate 21 and a second substrate 22 which are oppositely arranged; the first substrate is arranged between the sound generating unit and the second substrate.

[0105] In combination with Figure 18 , Figure 19 and Figure 23 shown in the figure, the display panel further includes a first polarizer 23. The first polarizer 23 includes a first part 231 and a second part 232 connected to one side of the first part 231; the first part is arranged on the side of the second electrode away from the first substrate and also serves as the first vibrating membrane; the part of the first polarizer extending out of the edge of the first substrate is the second part, and the second part also serves as the second vibrating membrane.

[0106] The above-mentioned first polarizer may include a polarizing layer and protective layers provided on both sides of the polarizing layer. The polarizing layer may be made of PVA (Polyvinyl Alcohol), and the protective layers may be made of TAC (Triacetyl Cellulose). This kind of polarizer can be bent, and conductive structures such as leads can be provided on the surface. One end of the second part of the first polarizer bound to the driving board can be made into a shape similar to that of an FPC.

[0107] Of course, the above-mentioned display panel further includes another polarizer ( Figure 18 , Figure 19 and Figure 23 marked as 230) provided on the side of the second substrate away from the first substrate. Other structures included in the display panel will not be described in detail here. For details, reference can be made to related technologies.

[0108] The above display panel can be applied to a liquid crystal display panel, wherein one of the first substrate and the second substrate is a color filter substrate (also known as a CF substrate), and the other is an array substrate (also known as a TFT substrate). In the above display module, the first part of the first polarizer is multiplexed as the first vibration film, and the second part is multiplexed as the second vibration film, so that there is no need to additionally provide the first vibration film and the second vibration film, greatly simplifying the structure and reducing the manufacturing cost; at the same time, the thickness of the product can also be reduced, which is beneficial to the improvement of portability.

[0109] Optionally, referring to Figure 18 and Figure 19 as shown, the first substrate includes a color filter substrate, and the second substrate includes an array substrate. In this display panel, referring to Figure 18 and Figure 19 as shown, one side of the second substrate 22 extends out of the first substrate 21. The part of the second substrate that extends out of the first substrate is used to arrange the chip unit 24, the bonding end 25, etc. The chip unit may include an IC (Integrated Circuit). The bonding end 25 can be bonded and connected to the driving board 3 through the second connecting part 31 (for example: an FPC board), so as to facilitate the driving board to transmit driving signals to the display panel.

[0110] Figure 15 and Figure 16 is a display module in the related art. Combining Figure 15 and Figure 16 , an additional bonding area needs to be reserved on the side of the color filter substrate 551 away from the array substrate 552, and at the same time, the first FPC board 51 is provided, so that the PCB board 52 can provide driving signals to the sound generating unit through the first FPC board 51. Figure 15 and Figure 16 In, the area to be blocked is area E. Figure 15 and Figure 16 In, an IC unit 54 and a second FPC board can also be provided on the array substrate 552. The PCB board 52 provides driving signals to the array substrate 552 through the second FPC board 53; a first POL (polarizer) layer 58 is also provided on the side of the sound generating driving structure 56 away from the display panel, and a second POL (polarizer) layer 59 is also provided on the side of the array substrate 552 away from the color filter substrate 551. In addition, Figure 15 In, the specific structure marked as 55 can be referred to Figure 16 as shown.

[0111] Figure 17 - 19 is a display module provided by an embodiment of the present invention. Figure 18 and Figure 19 In, the second part 232 of the first polarizer 23 is directly bonded to the driving board 3, so as to avoid reserving a bonding area and setting an FPC. The blocked area is area F. ComparingFigure 16 and Figure 18 the occlusion area is significantly reduced, thus achieving an extremely narrow bezel and at the same time realizing screen integration. In addition, Figure 17 the specific structure marked as 5 in Figure 18 and Figure 19 is shown as follows.

[0112] Alternatively, optionally, the first substrate includes an array substrate, and the second substrate includes a color filter substrate. The display panel belongs to the type of panel with the array substrate inverted. As shown in Figure 22 and Figure 23 one side of the first substrate 21 extends out of the second substrate 22. The part of the first substrate that extends out of the second substrate is used to set the chip unit 24, the bonding end 25, etc. The chip unit may include an IC (Integrated Circuit). The bonding end 25 can be bonded and connected to the driving board 3 through the second connecting part 31 (for example: FPC board), so as to facilitate the driving board to transmit driving signals to the display panel.

[0113] Figure 20 and Figure 21 is a display module in the related art. As shown in Figure 20 and Figure 21 an additional bonding area needs to be reserved on the side of the array substrate 552 away from the color filter substrate 551, and at the same time, the first FPC board 51 is set, so as to realize that the PCB board 52 provides driving signals to the sound generating unit through the first FPC board 51. Figure 20 and Figure 21 in the area to be occluded is the E1 area. Figure 20 and Figure 21 in, an IC unit 54 and a second FPC board can also be set on the array substrate 552. The PCB board 52 provides driving signals to the array substrate 552 through the second FPC board 53; a first POL (polarizer) layer 58 is also set on the side of the sound generating driving structure 56 away from the display panel, and a second POL (polarizer) layer 59 is also set on the side of the array substrate 552 away from the color filter substrate 551. In addition, Figure 20 the specific structure marked as 55 in Figure 21 is shown as follows.

[0114] Figure 22 and Figure 23 is a display module provided by an embodiment of the present invention. Figure 23 in, the second part 232 of the first polarizer 23 is directly bonded to the driving board 3, thus avoiding reserving a bonding area and setting an FPC. The occlusion area is the F1 area. Comparing Figure 21 and Figure 23 the occlusion area is significantly reduced, thus achieving an extremely narrow bezel and at the same time realizing screen integration. In addition, Figure 22The specific structure marked as 5 can be referred to Figure 23 as shown.

[0115] In one or more embodiments, referring to Figure 26 and 27 as shown, the display panel includes a cover plate 27, a second polarizer 28, and a color filter substrate 29 and an array substrate 30 which are oppositely arranged; the cover plate 27 is arranged on the side of the color filter substrate 29 away from the array substrate 20, the second polarizer 28 is arranged between the cover plate 27 and the color filter substrate 29, and the sound generating unit ( Figure 27 not marked) is arranged on the side of the cover plate 27 away from the array substrate 29. Combining Figure 26 and Figure 27 as shown, one side of the array substrate 30 extends out of the color filter substrate 29. The part of the array substrate 30 extending out of the color filter substrate 29 is used to arrange the chip unit 24, the bonding end 25, etc. The chip unit may include an IC (Integrated Circuit), and the bonding end 25 can be bonded and connected to the driving board 3 through a second connecting part 31 (for example: an FPC board), so as to facilitate the driving board to transmit driving signals to the display panel.

[0116] Figure 24 and Figure 25 show a display module in the related art. Combining Figure 24 and Figure 25 , an additional bonding area needs to be reserved on the side of the glass cover plate 60 away from the color filter substrate 551, and at the same time, a first FPC board 51 is set, so that the PCB board 52 provides driving signals to the sound generating unit through the first FPC board 51. Figure 24 and Figure 25 , the area to be blocked is area E2. Figure 24 and Figure 25 , an IC unit 54 and a second FPC board can also be set on the array substrate 552; a vibration structure 57 is further set on the side of the sound generating driving structure 56 away from the display panel, a first POL (polarizer) layer 58 is further set on the side of the glass cover plate 60 close to the color filter substrate 551, and a second POL (polarizer) layer 59 is further set on the side of the array substrate 552 away from the color filter substrate 551. In addition, Figure 24 the specific structure marked as 55 can be referred to Figure 25 as shown.

[0117] Figure 26 and Figure 27 show a display module provided by an embodiment of the present invention. Figure 27 , the second vibration film 14 is directly bonded to the driving board 3, so as to avoid reserving a bonding area and setting an FPC, and the blocked area is area F2. Comparing Figure 25 andFigure 27 , the occlusion area is significantly reduced, thus achieving an extremely narrow bezel and simultaneously realizing screen integration. Additionally, Figure 26 The specific structure marked as 5 in Figure 27 is shown as follows.

[0118] Referring to Figure 27 shown in the figure, 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 ([[]] Figure 27 marked as 230) disposed on the side of the second substrate away from the first substrate. Other structures included in the display panel will not be elaborated here in detail. Specifically, reference may be made to related technologies.

[0119] Optionally, referring to Figure 18 , Figure 19 , Figure 23 , Figure 27 shown in the figure, the display module further includes a second connection portion 31, and the array substrate further includes a bonding end 25; both ends of the second connection portion 31 are respectively bonded and connected to the bonding end 25 and the driving board 3, thereby enabling the driving board to provide driving signals to the array substrate.

[0120] The above-mentioned second connection portion 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 on different sides, which is not limited here.

[0121] Optionally, for the convenience of bonding and further reducing the bezel, the first connection portion and the second connection portion are disposed on the same side of the display panel, that is, referring to Figure 18 , Figure 19 , Figure 23 , Figure 27 shown in the figure, the first connection portion (including the second vibration film 14) and the second connection portion 31 are disposed on the left side of the display panel

[0122] Optionally, referring to Figure 19 shown in the figure, the first connection portion ([[]] Figure 19 not marked) and the second connection portion 31 are bonded on the same side of the driving board 3, that is, single-sided bonding; or, referring to Figure 18 shown in the figure, the first connection portion ([[]] Figure 19 not marked) and the second connection portion 31 are respectively bonded on opposite sides of the driving board 3, that is, double-sided bonding.

[0123] It should be noted that if the driving board is bent to the back of the display panel, single-sided bonding can be selected, which is beneficial for bending. If the driving board is not bent to the back of the display panel, double-sided bonding can be selected to facilitate the routing design of the driving board.

[0124] An embodiment of the present invention further provides a display device, including the above-mentioned display module. The display device can be a rigid display device or a flexible display device (i.e., bendable and foldable). Its type can be a liquid crystal display device such as TN (Twisted Nematic), VA (Vertical Alignment), IPS (In-Plane Switching), or ADS (Advanced Super Dimension Switch); or, it can also be an OLED (Organic Light-Emitting Diode) display device; or, it can also be a Micro LED display device or a Mini LED display device, as well as any product or component with a display function, such as a television, digital camera, mobile phone, tablet computer, etc., including these display devices. The display device has a narrow border and can achieve a full-screen and screen integration.

[0125] As used herein, the terms "one embodiment", "an embodiment", or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. In addition, please note that the examples of the phrase "in one embodiment" herein do not necessarily all refer to the same embodiment.

[0126] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that, It includes a sound generating unit, a display panel, and a driving board. The sound generating unit is disposed on the light-emitting side of the display panel; The sound generating unit includes a body region and an extending region connected to one side of the body region; The body region includes a first electrode, a support layer, a second electrode, and a first vibration film that are sequentially stacked on the display panel; the first electrode and the second electrode are insulated; The extending region includes a second vibration film, a first lead, and a second lead. The second vibration film and the first vibration film are of an integral structure; the first lead and the second lead are insulated and disposed on one side of the second vibration film; Wherein, the second electrode is electrically connected to the second lead; the body region further includes a conductive portion that is insulated from the second electrode and is respectively electrically connected to the first lead and the first electrode; The second vibration film, the first lead, and the second lead form a first connection portion, and the first connection portion is bonded and connected to the driving board.

2. The display module according to claim 1, wherein The first electrode includes a first transparent sub-electrode and a first metal sub-electrode; the first metal sub-electrode is disposed on the side of the first transparent sub-electrode away from the display panel and is electrically connected to the first transparent sub-electrode; Wherein, the conductive portion is in contact with the first metal sub-electrode.

3. The display module according to claim 2, wherein The second electrode includes a second transparent sub-electrode and a second metal sub-electrode; the second metal sub-electrode is disposed on the side of the second transparent sub-electrode close to the display panel and is electrically connected to the second transparent sub-electrode; Wherein, the second metal sub-electrode is connected to the second lead.

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

5. The display module according to claim 3, wherein, The body region includes a central region and a peripheral region surrounding the central region; the display panel includes a display region and a non-display region surrounding the display region; the central region corresponds to the display region, and the peripheral region corresponds to the non-display region; The first transparent sub-electrode includes a planar electrode and is located in the central region and the peripheral region; the first metal sub-electrode includes an annular electrode and is located in the peripheral region; the first transparent sub-electrode and the first metal sub-electrode are in contact; The sound generating unit further includes a first insulating layer located in the body region. The first insulating layer covers the first transparent sub-electrode and the first metal sub-electrode and exposes a part of the first metal sub-electrode; The conductive portion is in contact with the part of the first metal sub-electrode not covered by the first insulating layer.

6. The display module according to claim 5, wherein, The peripheral region includes a first region; The second transparent sub-electrode includes a planar electrode. The second transparent sub-electrode is located in the central region and the region of the peripheral region except the first region; The second metal sub-electrode includes an annular electrode and is located in the region of the peripheral region except the first region; The conductive portion is disposed on the side of the first vibration film close to the display panel and is located in the first region.

7. The display module according to claim 6, characterized in that, The second vibration film is at least connected to the part of the first vibration film located in the first region, and the conductive portion is connected to the first lead.

8. The display module according to claim 6, wherein The sound generating unit further includes a second insulating layer; the second insulating layer is at least located in the body region; The positive projections of the second metal sub-electrode and the second transparent sub-electrode on the display panel are located within the positive projection of the second insulating layer on the display panel, and the positive projection of the conductive portion on the display panel does not overlap with the positive projection of the second insulating layer on the display panel.

9. The display module according to claim 1, wherein The display panel includes a first substrate and a second substrate disposed opposite to each other; the first substrate is disposed between the sound generating unit and the second substrate; The display panel further includes a first polarizer, the first polarizer includes a first portion and a second portion connected to one side of the first portion; the first portion is disposed on the side of the second electrode away from the first substrate and also serves as the first vibration film; the portion of the first polarizer extending beyond the edge of the first substrate is the second portion, and the second portion also serves as the second vibration film.

10. The display module according to claim 9, wherein The first substrate includes a color filter substrate, and the second substrate includes an array substrate; Alternatively, the first substrate includes an array substrate, and the second substrate includes a color filter substrate.

11. The display module according to claim 1, wherein The display panel includes a cover plate, a second polarizer, and a color filter substrate and an array substrate disposed opposite to each other; the cover plate is disposed on the side of the color filter substrate away from the array substrate, the second polarizer is disposed between the cover plate and the color filter substrate, and the sound generating unit is disposed on the side of the cover plate away from the array substrate.

12. The display module according to any one of claims 10-11, characterized in that, The display module further includes a second connecting portion, and the array substrate further includes a bonding end; Both ends of the second connecting portion are respectively bonded and connected to the bonding end and the driving board.

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

14. The display module according to claim 12, wherein The first connecting portion and the second connecting portion are bonded on the same side of the driving board; or, the first connecting portion and the second connecting portion are respectively bonded on opposite sides of the driving board.

15. A display device, characterized in that, Including the display module according to any one of claims 1-14.

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