Cover plate, display module and display device

Abstract

The disclosure provides a cover plate, a display module and a display device. The cover plate comprises a substrate, at least one opening, at least one electrostatic conductive part and at least one electrostatic discharge trace. The substrate comprises a first area and a second area surrounding the first area. The substrate comprises a first surface and a second surface arranged oppositely. The at least one opening is located in the second area of the substrate. The electrostatic conductive part is arranged in the opening. The electrostatic conductive part comprises a plurality of protrusions arranged on the side wall of the opening at intervals. Each protrusion comprises a first end close to the side wall of the opening and a second end away from the side wall of the opening. The orthogonal projection of the second end on the side wall is within the orthogonal projection range of the first end on the side wall. The at least one electrostatic discharge trace is connected to the second end of the corresponding plurality of protrusions and extends to the second surface of the substrate for grounding. The physical structure is used to concentrate the tearing film static electricity. The electrostatic discharge trace is used to conduct the concentrated tearing film static electricity to the grounding point, so as to improve and reduce the effect of protecting the tearing film static electricity.

Description

Technical Field

[0001] This disclosure relates to the field of display panel technology, and in particular to a cover plate, display module, and display device. Background Technology

[0002] OLED Once-On-Cell Touch display panels, also known as DOT (Direct On Cell Touch) technology, are widely used as secondary screens in foldable display panels. Foldable display modules have cover plates on both the main and secondary screens of the display panel. At the factory, the side of the cover plate facing away from both the main and secondary screens is covered with a protective film. Typically, the cover plate of the secondary screen in a foldable display module has openings for mounting the camera module lens of a mobile phone. During subsequent electrostatic discharge (ESD) testing, the ESD effect from these openings accumulates more static electricity than in the cover plate's viewing area. Therefore, if the test point is located at the edge of the opening area, the ESD test will fail. Summary of the Invention

[0003] In view of this, the purpose of this disclosure is to provide a cover plate and display module and display device that effectively dissipates static electricity generated during film removal.

[0004] For the purposes described above, this disclosure discloses a cover plate comprising:

[0005] A substrate includes a first region and a second region disposed around the first region. In the thickness direction of the substrate, the substrate includes a first surface and a second surface disposed opposite to each other.

[0006] At least one opening is located in the second region of the substrate, and the opening penetrates the substrate along the thickness direction of the substrate;

[0007] At least one electrostatic conductive part is disposed in the corresponding opening. The electrostatic conductive part includes a plurality of protrusions that are spaced apart and surround the sidewall of the opening. The protrusions extend toward the center of the opening. Each protrusion includes a first end near the sidewall of the opening and a second end away from the sidewall of the opening. The orthographic projection of the second end on the sidewall is located within the orthographic projection range of the first end on the sidewall.

[0008] At least one electrostatic discharge trace is provided, which connects to the second end corresponding to the plurality of protrusions and extends to the second surface of the substrate, and the electrostatic discharge trace is grounded.

[0009] In one embodiment, the electrostatic discharge trace includes a first trace and a second trace, the first trace being located within the opening and connected to the second end of each of the protrusions, the first trace being electrically connected to the second trace and extending to the second surface of the substrate to ground.

[0010] In one embodiment, the first trace includes a plurality of trace segments connected end to end, and each trace segment is connected to the second end corresponding to the protrusion.

[0011] In one embodiment, the second end of the protrusion is provided with a groove, and each of the trace segments is embedded in the corresponding groove;

[0012] Preferably, the cross-section of the groove is arc-shaped.

[0013] In one embodiment, the end of the second wire in each electrostatic discharge wire furthest from the first wire is wound to form a grounding coil.

[0014] Alternatively, the end of the second trace furthest from the first trace in the at least one electrostatic discharge trace may be wound together to form a grounding coil;

[0015] Preferably, the grounding coil is located on the side of the opening away from the first region;

[0016] Preferably, the grounding coil is located between adjacent openings.

[0017] In one embodiment, the cover plate further includes a first ink layer located on the second surface of the substrate and in a second region of the substrate, and the grounding coil is located on the side of the first ink layer opposite to the substrate.

[0018] In one embodiment, the plurality of protrusions are integrally formed with the substrate.

[0019] Based on the same inventive concept, this disclosure also provides a display module, which includes:

[0020] The display panel includes a main screen and a sub-screen arranged opposite to each other;

[0021] The cover plate assembly includes a first cover plate and a second cover plate, wherein the first cover plate is located at the light-emitting side of the sub-screen and the second cover plate is located at the light-emitting side of the main screen, and the first cover plate is the cover plate described above.

[0022] In one embodiment, the hardness of the first cover plate is greater than that of the second cover plate;

[0023] Preferably, the first cover plate is a rigid cover plate.

[0024] Preferably, the second cover plate is a flexible cover plate.

[0025] Based on the same inventive concept, this disclosure also provides a display device, which includes the display module as described above.

[0026] Compared with the prior art, the cover plate, display module, and display device provided in this disclosure gather static electricity accumulated at the opening through a physical structure. For example, by setting an electrostatic conductive part, the static electricity accumulated at the opening is gathered at the second end of the protrusion in the electrostatic conductive part, wherein the second end of the protrusion away from the side wall is a tip. This design utilizes the characteristics of tip discharge to further gather the static electricity accumulated at the opening to the second end of the protrusion, and conducts the gathered peeling static electricity to the grounding point through the electrostatic discharge line, thereby improving and reducing the effect of peeling static electricity of the protective film. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram illustrating the state of the protective film being removed from the cover plate in the prior art;

[0029] Figure 2 Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 1 ;

[0030] Figure 3 Schematic diagram of the first surface of the cover plate provided in the embodiments of this application Figure 1 ;

[0031] Figure 4 Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 2 ;

[0032] Figure 5 Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 3 ;

[0033] Figure 6 Schematic diagram of the first surface of the cover plate provided in the embodiments of this application Figure 2 ;

[0034] Figure 7 A schematic diagram of the first surface of the cover plate provided in an embodiment of this application;

[0035] Figure 8 This is a schematic cross-sectional view of the protrusion provided in an embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the display module provided in the embodiments of this application in a folded state;

[0037] Figure 10This is a schematic diagram of the display module provided in the embodiment of this application in the unfolded state. Detailed Implementation

[0038] The following description, with reference to the accompanying drawings, illustrates preferred embodiments of the present invention, demonstrating its implementability. These embodiments provide a complete overview of the invention for those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0039] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of components is appropriately exaggerated in some places in the drawings.

[0040] Furthermore, the following descriptions of the embodiments of the invention are made with reference to the accompanying illustrations, illustrating specific embodiments in which the invention can be implemented. Directional terms used in this invention, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "side," are merely directional references to the accompanying drawings. Therefore, the use of directional terms is for better and clearer explanation and understanding of the invention, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] When a component is described as being "on" another component, the component may be placed directly on the other component; alternatively, an intermediate component may exist on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "installed to" or "connected to" another component, both can be understood as being directly "installed" or "connected" to, or indirectly "installed to" or "connected to" another component via an intermediate component.

[0042] refer to Figure 1 , Figure 1The illustration shows the protective film being peeled off the cover in existing technology. In related technologies, taking inward-folding display products, such as inward-folding mobile phones, as an example, after the phone is unfolded, display panels are distributed on both the front and back. The portion of the display panel on the front can be called the main screen, and the portion on the back can be called the secondary screen. The secondary screen is smaller than the main screen. After the phone is folded in half, the main screen is bent and located inside the phone, and only the secondary screen is used for external display. That is, even after the phone is folded in half, information can still be obtained or the phone can still be operated through the secondary screen. To protect the display panel, cover plates are installed on the light-emitting sides of the main screen and sub-screen of the display panel to protect them. The cover plate on the sub-screen has an opening 200 for mounting the camera module lens of the mobile phone. After the display module leaves the factory, a protective film 100 is applied to the side of the cover plate away from the display panel to prevent the display panel from being scratched. However, during the subsequent removal of the protective film, the static electricity accumulation at the opening 200 is more than that at the display area C of the display panel. When the test point is located at the edge of the opening area, the static electricity test for removing the film will result in a failure. To improve this situation, the raw materials of the protective film are improved by increasing the metal powder content of the adhesive surface. However, after the metal powder content of the adhesive surface of the protective film is increased, its adhesion decreases, which will cause the protective film to fall off. Another issue is that the improvement is easy to reach a bottleneck, especially with this type of cover plate with a sub-screen opening, it still cannot pass the certification standards of some end customers.

[0043] Based on the above reasons, this application provides a cover plate 10, a display module, and a display device. The cover plate 10 includes a substrate 11, at least one opening 13, at least one electrostatic conductive portion 15, and at least one electrostatic discharge trace 14. The cover plate 10 includes a first region A and a second region B surrounding the first region A. In the thickness direction of the substrate 11, the substrate 11 includes a first surface 111 and a second surface 112 disposed opposite to each other. At least one opening 13 is located in the second region B of the substrate 11 and penetrates the substrate 11 along the thickness direction. The electrostatic conductive portion 15 is disposed in the corresponding opening 13. The electrostatic conductive portion 15 includes a plurality of protrusions 151, which are spaced apart and surround the sidewall 131 of the opening 13. The protrusions 151 are oriented towards the center of the opening 13. Each protrusion 151 includes a first end 1511 near the sidewall 131 of the opening 13 and a second end 1512 away from the sidewall 131 of the opening 13. The orthographic projection of the second end 1512 on the sidewall 131 is within the orthographic projection range of the first end 1511 on the sidewall 131. The electrostatic discharge line 14 connects the second ends 1512 of the corresponding protrusions 151 and extends to the second surface 112 of the substrate 11. The electrostatic discharge line 14 is grounded. In this embodiment, by providing the electrostatic conductive part 15, the static electricity accumulated at the opening 13 is gathered in the second end 1512 of the protrusion 151 in the electrostatic conductive part 15, and the gathered film-peeling static electricity is conducted to the grounding point through the electrostatic discharge line 14, thereby improving and reducing the effect of peeling static electricity of the protective film.

[0044] refer to Figures 9-10 , Figure 9 This is a schematic diagram of the display module provided in the embodiments of this application in a folded state; Figure 10 This is a schematic diagram of the display module provided in the embodiment of this application in its unfolded state. With the rapid development of display technology, various novel display devices have emerged. This display module includes a main screen 22 and a sub-screen 21, which are located on opposite sides of the display panel 20. The main screen 22 can be folded. In the unfolded state, the main screen 22 displays information. In the folded state, the main screen 22 is hidden inside the display module and can be displayed through the sub-screen 21. It should be noted that the sub-screen 21 is always located on the back side of the display module, opposite to the main screen 22, and cannot be unfolded or folded.

[0045] The sub-screen portion 21 of the display panel 20 is equipped with a camera module lens. In this embodiment, by setting the camera module lens in the sub-screen portion 21, the normal operation of the camera module lens will not be affected whether the display panel 20 is unfolded or folded.

[0046] Next, let's combine Figures 2-8 To describe the cover plate 10 provided in the embodiments of this application, Figure 2Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 1 ; Figure 3 Schematic diagram of the first surface of the cover plate provided in the embodiments of this application Figure 1 ; Figure 4 Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 2 ; Figure 5 Schematic diagram of the second surface of the cover plate provided in the embodiments of this application Figure 3 ; Figure 6 Schematic diagram of the first surface of the cover plate provided in the embodiments of this application Figure 2 ; Figure 7 A schematic diagram of the first surface of the cover plate provided in an embodiment of this application; Figure 8 This is a schematic cross-sectional view of the protrusion provided in an embodiment of this application.

[0047] The cover plate 10 is mainly installed on the light-emitting side of the sub-screen 21 of the display panel 20, and is used to protect the sub-screen of the display panel 20.

[0048] Furthermore, the cover plate 10 includes a substrate 11, which includes a first region A and a second region B surrounding the first region A. It should be noted that, in this embodiment, the first region A can be a window region, which corresponds to the display area of ​​the sub-screen 21, and the second region B can be a non-window region, which corresponds to the non-display area of ​​the sub-screen 21. The non-window region is provided with at least one opening 13 corresponding to the camera module lens of the sub-screen 21, and the opening 13 penetrates the substrate 11 along the thickness direction of the substrate 11.

[0049] Furthermore, in the thickness direction of the substrate 11, the substrate 11 includes a first surface 111 and a second surface 112 disposed opposite to each other, wherein the first surface 111 is the side surface close to the sub-screen portion 21, and the second surface 112 is the side surface away from the sub-screen portion 21.

[0050] For example, the projection of the opening 13 onto the substrate 11 is circular, arc-shaped, or quadrilateral.

[0051] As an optional implementation, the number of openings 13 included in the cover plate 10 provided in this embodiment is not specifically limited. It can be one, two, three or even more, and can be set according to the number of lenses required by the camera module in the display module.

[0052] refer to Figure 7 In one embodiment, the cover plate 10 further includes at least one electrostatic conductive part 15 disposed in each opening 13, which focuses the static electricity accumulated at the opening 13.

[0053] Specifically, the electrostatic conductive part 15 includes a plurality of protrusions 151, which are spaced apart and arranged around the sidewall 131 of the opening 13. The protrusions 151 extend toward the center of the opening 13. Each protrusion 151 includes a first end 1511 connected to the sidewall 131 of the opening 13 and a second end 1512 away from the sidewall 131 of the opening 13. The orthographic projection of the second end 1512 on the sidewall 131 is within the orthographic projection range of the first end 1511 on the sidewall 131. Alternatively, each protrusion 151 can be understood as being conical, with the end of the protrusion 151 away from the sidewall 131 (the second end 1512) being a pointed tip. This design utilizes the characteristics of tip discharge to concentrate the static electricity accumulated at the opening 13 to the second end 1512 (the pointed tip) of the protrusion 151.

[0054] For example, multiple protrusions 151 are integrally formed with the substrate 11. This can be understood as forming multiple protrusions 151 during the process of opening the hole 13 in the substrate 11, or as bonding multiple protrusions 151 to the sidewall 131 of the opening 13. This can be understood as bonding multiple protrusions 151 to the sidewall 131 of the opening 13 after the substrate 11 opens the hole 13.

[0055] For example, the substrate is a glass substrate.

[0056] refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 In one embodiment, the cover plate 10 further includes at least one electrostatic discharge line 14. The electrostatic discharge line 14 is connected to the second end 1512 of the plurality of protrusions 151 and extends to the second surface 112 of the substrate 11. The electrostatic discharge line 14 is grounded. Specifically, the electrostatic discharge line 14 is connected to the second end 1512 of the plurality of protrusions 151 and extends to the second area B of the cover plate 10 and is grounded. It can be understood that the electrostatic discharge line 14 is connected to the second end 1512 of each protrusion 151 and conducts the static electricity focused on the second end 1512 of the protrusion 151 to the outside of the opening 13 and grounded. In this embodiment, by setting the electrostatic discharge line 14, the static electricity generated by the opening 13 can be discharged. For example, the electrostatic discharge line 14 conducts the static electricity gathered at the second end 1512 (tip) of the protrusion 151 to ground, thereby improving and reducing the static electricity when the protective film is peeled off.

[0057] refer to Figure 7In one specific embodiment, the electrostatic discharge trace 14 includes a first trace 141 and a second trace 142. The first trace 141 is located inside the opening 13 and is connected to a plurality of protrusions 151. The second trace 142 is connected to the first trace 141 and extends to the second surface 112 of the substrate 11 and is grounded. It can be understood that the static electricity of the second end 1512 of the protrusion 151 is conducted to the first trace 141, and the static electricity is discharged to the outside of the opening 13 and grounded through the second trace 142 connected to the first trace 141.

[0058] refer to Figure 7 and Figure 8 In one specific embodiment, the first trace 141 includes multiple trace segments 1411 connected end-to-end. Each trace segment 1411 is connected to a corresponding protrusion 151. In this embodiment, the second end 1512 of the protrusion 151, which is gathered at both ends, is led out to the outside of the opening 13 through the second trace 142. The second end 1512 of the protrusion 151 is provided with a groove, and the trace segment 1411 is embedded in the corresponding groove. In this embodiment, by providing a groove at the second end 1512 of the protrusion 151, the contact area between the trace segment 1411 and the second end 1512 of the protrusion 151 can be increased, thereby reducing the contact resistance between them and enhancing the conductivity. On the other hand, placing the trace end in the groove has a concealing effect.

[0059] refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 In one specific embodiment, a grounding coil 143 is provided at the end of the second trace 142 away from the first trace 141. By providing the grounding coil 143, the grounding area of ​​the second trace 142 can be increased, which is beneficial for the discharge of static electricity.

[0060] refer to Figure 2 , Figure 5 and Figure 7In an optional embodiment, the end of the second trace 142 in each electrostatic discharge trace 14 that is away from the first trace 141 is wound to form a grounding coil 143. That is, the number of grounding coils 143 in this application can be the same as the number of the second trace 142 (or the number of openings 13 can be the same). For example, when there is one opening 13 on the substrate 11, the substrate 11 needs one electrostatic discharge trace 14. Then, only one grounding coil 143 is provided on the second surface 112 of the substrate 11, and the grounding coil 143 is located on the side of the opening 13 away from the first region A. If there are two other openings 13 on the substrate 11, the cover plate 10 includes two electrostatic discharge traces 14. The end of the second trace 142 in each electrostatic discharge trace 14 that is away from the first trace 141 is wound to form a grounding coil 143. Then, the second surface 112 of the substrate 11 is provided with two grounding coils 143. This embodiment can be applied to the case where multiple grounding points are reserved on the display panel 20.

[0061] refer to Figure 2 , Figure 4 and Figure 7 In an optional embodiment, the second line 142 of at least one electrostatic discharge line 14 is wound together at the end away from the first line 141 to form a grounding coil 143. In this embodiment, regardless of how many openings 13 are provided on the substrate 11, the second line 142 of the electrostatic discharge line 14 corresponding to each opening 13 is wound together at the end away from the first line 141 to form a grounding coil 143. That is, only one grounding coil 143 is provided on the second surface 112 of the cover plate 10. Furthermore, the grounding coil is located between adjacent openings 13. This embodiment can be applied to the case where there is only one grounding point reserved on the display panel 20.

[0062] refer to Figure 2 , Figure 4 and Figure 5 In one embodiment, the cover plate 10 further includes a first ink layer 16, which is located on the second surface 112 of the cover plate 10 and in the second region B of the cover plate 10. In this embodiment, by setting the second ink layer, the edge area (second region B) of the main screen portion 22 of the display panel 20 is light-shielded, thereby reducing the risk of light transmission after the cover plate 10 is assembled to the display screen. The grounding coil 143 is located on the side of the first ink layer 16 away from the substrate 11. The ink layer can shield the electrostatic discharge trace 14, preventing the user from seeing the electrostatic discharge trace 14 from the first surface 111 of the cover plate 10.

[0063] Next, combine Figures 2-10 The present application describes a display module provided in an embodiment, which includes a display panel 20, a support structure, a polarizer, an adhesive layer, a cover plate 10 assembly, and a protective film.

[0064] refer to Figure 9 and Figure 10 The display panel 20 includes a main screen 22 and a secondary screen 21, which are located on opposite sides of the display panel 20. The main screen 22 includes a first display area and a second display area. The main screen 22 is foldable. In the unfolded state, the main screen 22 displays information; in the folded state, the main screen 22 is hidden inside the display module and can be displayed through the secondary screen 21. The main screen 22 cannot be unfolded or folded.

[0065] The display panel 20 is used to display images, and it may specifically include a substrate, an array layer, and a light-emitting device layer stacked sequentially. The display panel 20 may specifically be an OLED (Organic Light-Emitting Diode) screen, a Liquid Crystal Display (LCD) screen, or a Micro-LED screen, etc. This application does not limit the specific structure of the display panel 20.

[0066] In the thickness direction of the display panel 20, the display panel 20 includes a first side and a second side disposed opposite to each other, wherein the first side is the light-emitting side of the display panel 20 and the second side is the backlight side of the display panel 20.

[0067] The support structure 40 is located on the backlight side of the display panel 20. The main screen 22 and the sub-screen 21 share the support structure. The display panel 20 is bent after manufacturing so that the main screen 22 and the sub-screen 21 are located on opposite sides of the display module, which helps to improve production efficiency.

[0068] A polarizer (not shown in the attached diagram) is located on the side of the display panel 20 away from the supporting structure; it can also be understood as the polarizer being located on the light-emitting side of the display panel 20. The main screen 22 and the sub-screen 21 share the same polarizer. The display panel 20 is bent after fabrication, so that the main screen 22 and the sub-screen 21 are located on opposite sides of the display module, which helps to improve production efficiency.

[0069] The cover plate 10 assembly is disposed on the first side (light-emitting side) of the display panel 20. The cover plate 10 assembly is further disposed on the side of the polarizer away from the display panel 20. The cover plate 10 assembly is used to protect the display panel 20. Specifically, the cover plate 10 assembly includes a first cover plate 10 and a second cover plate 30. The first cover plate 10 is located on the light-emitting side of the sub-screen 21, and the second cover plate 30 is located on the light-emitting side of the main screen 22. The first cover plate 10 mainly protects the sub-screen 21, and the second cover plate 30 mainly protects the main screen 22. The first cover plate 10 can be the cover plate 10 described above.

[0070] A protective film is set on the side of the cover plate 10 away from the display panel 20. By setting the protective film, the back of the display module can be prevented from being scratched during transportation. A protective film can be attached to the cover plate 10 assembly of the display module. Specifically, the protective film includes a first protective film and a second protective film. The first protective film is set on the side of the first cover plate 10 away from the sub-screen 21, and the second protective film is set on the side of the second cover plate 30 away from the main screen 22.

[0071] It should also be noted that the protective film in this embodiment will be removed during subsequent use. However, during the removal of the protective film, static electricity will be generated due to the friction between the protective film and the cover plate 10. At the same time, the first cover plate 10 in the cover plate 10 assembly is provided with an opening 13, and the static electricity accumulation in the opening 13 is greater than that in the display area. When the test point is located at the edge of the hole area, the static electricity test of film removal will result in an NG (Not Acceptable) situation. Therefore, in this embodiment, an electrostatic conductive part 15 is provided in the opening 13 to focus the static electricity accumulated at the opening 13, so that the focused static electricity can be led out of the opening 13 and grounded through the static electricity release line 14 during the subsequent film removal process.

[0072] refer to Figures 2-6 Specifically, in this embodiment, the first cover plate 10 includes a substrate 11, which includes a first region A and a second region B surrounding the first region A. It should be noted that in this embodiment, the first region A can be a viewing area corresponding to the display area of ​​the sub-screen 21, and the second region B can be a non-viewing area corresponding to the non-display area of ​​the sub-screen 21. The non-viewing area is provided with at least one opening 13 corresponding to the camera module lens of the sub-screen 21, and the opening 13 penetrates the substrate 11 along its thickness direction.

[0073] Furthermore, in the thickness direction of the substrate 11, the substrate 11 includes a first surface 111 and a second surface 112 disposed opposite to each other, wherein the first surface 111 is the side surface close to the sub-screen portion 21, and the second surface 112 is the side surface away from the sub-screen portion 21.

[0074] For example, the projection of the opening 13 onto the substrate 11 is circular, arc-shaped, or quadrilateral.

[0075] As an optional implementation, the number of openings 13 included in the first cover plate 10 provided in this embodiment is not specifically limited. It can be one, two, three or even more, and can be set according to the number of lenses required by the camera module in the display module.

[0076] refer to Figure 7 In one embodiment, the first cover plate 10 further includes at least one electrostatic conductive part 15 disposed in each opening 13, which focuses the static electricity accumulated at the opening 13.

[0077] Specifically, the electrostatic conductive part 15 includes a plurality of protrusions 151, which are spaced apart and arranged around the sidewall 131 of the opening 13. The protrusions 151 extend toward the center of the opening 13. Each protrusion 151 includes a first end 1511 connected to the sidewall 131 of the opening 13 and a second end 1512 away from the sidewall 131 of the opening 13. The orthographic projection of the second end 1512 on the sidewall 131 is within the orthographic projection range of the first end 1511 on the sidewall 131. Alternatively, each protrusion 151 can be understood as being conical, with the end of the protrusion 151 away from the sidewall 131 (the second end 1512) being a pointed tip. This design utilizes the characteristics of tip discharge to concentrate the static electricity accumulated at the opening 13 to the second end 1512 (the pointed tip) of the protrusion 151.

[0078] For example, multiple protrusions 151 are integrally formed with the substrate 11. This can be understood as forming multiple protrusions 151 during the process of opening the hole 13 in the substrate 11, or as bonding multiple protrusions 151 to the sidewall 131 of the opening 13. This can be understood as bonding multiple protrusions 151 to the sidewall 131 of the opening 13 after the substrate 11 opens the hole 13.

[0079] refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 In one embodiment, the first cover plate 10 further includes at least one electrostatic discharge line 14. The electrostatic discharge line 14 is connected to the second ends 1512 of the plurality of protrusions 151 and extends to the second surface 112 of the substrate 11. Specifically, the electrostatic discharge line 14 is connected to the second ends 1512 of the plurality of protrusions 151 and extends to the second area B of the cover plate 10 and grounded. It can be understood that the electrostatic discharge line 14 is connected to the second ends 1512 of each protrusion 151 and conducts the static electricity focused on the second ends 1512 of the protrusion 151 to the outside of the opening 13 and grounded. In this embodiment, by setting the electrostatic discharge line 14, the static electricity generated by the opening 13 can be discharged. For example, the electrostatic discharge line 14 conducts the static electricity gathered on the second ends 1512 (tip) of the protrusion 151 to ground, thereby improving and reducing the static electricity when the protective film is peeled off.

[0080] In one specific embodiment, the electrostatic discharge trace 14 includes a first trace 141 and a second trace 142. The first trace 141 is located inside the opening 13 and is connected to a plurality of protrusions 151. The second trace 142 is connected to the first trace 141 and extends to the second surface 112 of the substrate 11 and is grounded. It can be understood that the static electricity of the second end 1512 of the protrusion 151 is conducted to the first trace 141, and the static electricity is discharged to the outside of the opening 13 and grounded through the second trace 142 connected to the first trace 141.

[0081] refer to Figure 8 In one specific embodiment, the first trace 141 includes multiple trace segments 1411 connected end-to-end. Each trace segment 1411 is connected to a corresponding protrusion 151. In this embodiment, the second end 1512 of the protrusion 151, which is gathered at both ends, is led out to the outside of the opening 13 through the second trace 142. The second end 1512 of the protrusion 151 is provided with a groove, and the trace segment 1411 is embedded in the corresponding groove. In this embodiment, by providing a groove at the second end 1512 of the protrusion 151, the contact area between the trace segment 1411 and the second end 1512 of the protrusion 151 can be increased, thereby reducing the contact resistance between them and enhancing the conductivity. On the other hand, placing the trace end in the groove has a concealing effect.

[0082] refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 In one specific embodiment, a grounding coil 143 is provided at the end of the second trace 142 away from the first trace 141. By providing the grounding coil 143, the grounding area of ​​the second trace 142 can be increased, which is beneficial for the discharge of static electricity.

[0083] refer to Figure 2 , Figure 5 and Figure 7 In an optional embodiment, the end of the second trace 142 in each electrostatic discharge trace 14 that is away from the first trace 141 is wound to form a grounding coil 143. That is, the number of grounding coils 143 in this application can be the same as the number of the second trace 142 (or the number of openings 13 can be the same). For example, when there is one opening 13 on the substrate 11, the substrate 11 needs one electrostatic discharge trace 14. Then, only one grounding coil 143 is provided on the second surface 112 of the substrate 11, and the grounding coil 143 is located on the side of the opening 13 away from the first region A. If there are two other openings 13 on the substrate 11, the cover plate 10 includes two electrostatic discharge traces 14. The end of the second trace 142 in each electrostatic discharge trace 14 that is away from the first trace 141 is wound to form a grounding coil 143. Then, the second surface 112 of the substrate 11 is provided with two grounding coils 143. This embodiment can be applied to the case where multiple grounding points are reserved on the display panel 20.

[0084] refer to Figure 2 , Figure 4 and Figure 7In an optional embodiment, the second line 142 of at least one electrostatic discharge line 14 is wound together at the end away from the first line 141 to form a grounding coil 143. In this embodiment, regardless of how many openings 13 are provided on the substrate 11, the second line 142 of the electrostatic discharge line 14 corresponding to each opening 13 is wound together at the end away from the first line 141 to form a grounding coil 143. That is, only one grounding coil 143 is provided on the second surface 112 of the cover plate 10. Furthermore, the grounding coil is located between adjacent openings 13. This embodiment can be applied to the case where there is only one grounding point reserved on the display panel 20.

[0085] refer to Figure 2 , Figure 4 and Figure 5 In one embodiment, the first cover plate 10 further includes a first ink layer 16, which is located on the second surface 112 of the cover plate 10 and in the second region B of the cover plate 10. In this embodiment, by setting the second ink layer, the edge area (second region B) of the main screen portion 22 of the display panel 20 is shielded, thereby reducing the risk of light transmission after the cover plate 10 is assembled to the display screen. The grounding coil 143 is located on the side of the first ink layer 16 away from the substrate 11. The ink layer can shield the electrostatic discharge trace 14, preventing the user from seeing the electrostatic discharge trace 14 from the first surface 111 of the cover plate 10.

[0086] refer to Figure 10 In one embodiment, a second cover plate 30 is disposed on the light-emitting side of the main screen portion 22 to protect the main screen portion 22 of the display panel 20. The cover plate 30 includes a third area and a fourth area surrounding the third area. It should be noted that in this embodiment, the third area corresponds to the display area of ​​the main screen portion 22, and the fourth area corresponds to the bezel area of ​​the main screen portion 22.

[0087] In one embodiment, a second ink layer (not shown in the figure) is provided on the side surface of the second cover plate 30 near the main screen portion 22 and in the fourth region of the second cover plate 30. The second ink layer surrounds the third region of the second cover plate 30. In this embodiment, by providing the second ink layer, the edge area (fourth region) of the main screen portion 22 of the display panel 20 is light-shielded, thereby reducing the risk of light transmission after the cover plate 10 is assembled to the display screen.

[0088] In one embodiment, the hardness of the first cover plate 10 is greater than that of the second cover plate 30. For example, the first cover plate 10 is a rigid cover plate 10 and the second cover plate 30 is a flexible cover plate 10, thereby enabling the display panel 20 to have good bending ability.

[0089] In one embodiment, the display module further includes an adhesive layer (not shown in the drawings), which is located on the side of the polarizer facing away from the display panel 20, and connects the polarizer and the cover plate 10 by means of the adhesive layer. The adhesive layer includes a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is located between the sub-shield and the first cover plate 10, and the second adhesive layer is located between the main shield and the second cover plate 30.

[0090] Based on the same inventive concept, this disclosure also provides a display device, which includes the technical effects of the display module in any of the above embodiments. The explanations of the same or corresponding structures and terms as in the above embodiments will not be repeated here.

[0091] The display device provided in this application embodiment can be applied to mobile phones, or to any electronic product with display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This application embodiment does not make any special limitations on these.

[0092] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0093] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A cover plate, characterized in that, include: A substrate includes a first region and a second region disposed around the first region. In the thickness direction of the substrate, the substrate includes a first surface and a second surface disposed opposite to each other. At least one opening is located in the second region of the substrate, and the opening penetrates the substrate along the thickness direction of the substrate; At least one electrostatic conductive part is disposed in the corresponding opening. The electrostatic conductive part includes a plurality of protrusions that are spaced apart and surround the sidewall of the opening. The protrusions extend toward the center of the opening. Each protrusion includes a first end near the sidewall of the opening and a second end away from the sidewall of the opening. The orthographic projection of the second end on the sidewall is located within the orthographic projection range of the first end on the sidewall. At least one electrostatic discharge trace is provided, which connects to the second end corresponding to the plurality of protrusions and extends to the second surface of the substrate, and the electrostatic discharge trace is grounded.

2. The cover plate as described in claim 1, characterized in that, The electrostatic discharge trace includes a first trace and a second trace. The first trace is located inside the opening and connects to the second end of each of the protrusions. The first trace is electrically connected to the second trace, and the second trace extends to the second surface of the substrate and is grounded.

3. The cover plate as described in claim 2, characterized in that, The first trace includes multiple trace segments connected end to end, and each trace segment is connected to the second end of the corresponding protrusion.

4. The cover plate as described in claim 3, characterized in that, The second end of the protrusion is provided with a groove, and each of the wiring segments is embedded in the corresponding groove; Preferably, the cross-section of the groove is arc-shaped.

5. The cover plate as described in claim 2, characterized in that, In each of the electrostatic discharge lines, the end of the second line furthest from the first line is wound to form a grounding coil. Alternatively, the end of the second trace furthest from the first trace in the at least one electrostatic discharge trace may be wound together to form a grounding coil; Preferably, the grounding coil is located on the side of the opening away from the first region; Preferably, the grounding coil is located between adjacent openings.

6. The cover plate as described in claim 5, characterized in that, The cover plate further includes a first ink layer located on the second surface of the substrate and in the second region of the substrate, and the grounding coil is located on the side of the first ink layer away from the substrate.

7. The cover plate as claimed in claim 1, characterized in that, The plurality of protrusions are integrally formed with the substrate.

8. A display module, characterized in that, include: The display panel includes a main screen and a sub-screen arranged opposite to each other; A cover plate assembly includes a first cover plate and a second cover plate, wherein the first cover plate is located at the light-emitting side of the sub-screen and the second cover plate is located at the light-emitting side of the main screen, and the first cover plate includes the cover plate as described in any one of claims 1-7.

9. The display module as described in claim 8, characterized in that, The hardness of the first cover plate is greater than that of the second cover plate; Preferably, the first cover plate is a rigid cover plate. Preferably, the second cover plate is a flexible cover plate.

10. A display device, characterized in that, Includes the display module as described in claim 8 or 9.

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