Cover plate and display module

Abstract

The invention discloses a cover plate and a display module, the cover plate comprises a window area and a frame area arranged on the periphery of the window area, and the cover plate further comprises a cover plate body located in the window area and the frame area; the electrostatic protection part is arranged on one side of the cover plate body and located in the frame area; the shading layer is arranged on the side, away from the cover plate body, of the electrostatic protection part, the orthographic projection of the shading layer on the cover plate body covers part of orthographic projection of the electrostatic protection part on the cover plate body, and meanwhile part of the electrostatic protection part is exposed from the shading layer to serve as an electrostatic discharge part of the electrostatic protection part. According to the display module, the cover plate comprises the electrostatic protection part, the electrostatic protection part is located in the frame area, and therefore the antistatic capacity of the display module can be improved on the premise that the display function is guaranteed, in addition, the shading layer is further arranged to cover part of the electrostatic protection part, and the shading layer can protect the electrostatic protection part while shading light.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a cover plate and a display module. Background Art

[0002] With the development and popularization of display technology in recent years, display modules have been applied to various electronic devices, such as mobile phones, tablet computers or other portable electronic devices.

[0003] However, the inventor of the present application has discovered that the product quality of current display modules needs to be further improved. Summary of the invention

[0004] The present application provides a cover plate and a display module, which can improve the anti-static ability of the cover plate.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a cover plate, the cover plate includes a window area and a frame area arranged outside the window area, and the cover plate also includes:

[0006] A cover body, located in the window area and the frame area;

[0007] An electrostatic protection member is disposed on one side of the cover body and located in the frame area;

[0008] A shading layer is arranged on the side of the electrostatic protection member facing away from the cover body, wherein the orthographic projection of the shading layer on the cover body covers a portion of the orthographic projection of the electrostatic protection member on the cover body, and at the same time, a portion of the electrostatic protection member is exposed from the shading layer to serve as an electrostatic release portion of the electrostatic protection member.

[0009] According to an embodiment of the present application, a surface of the cover body is provided with a groove located in the border area, and the electrostatic protection element is arranged in the groove;

[0010] Preferably, the thickness of the electrostatic protection element is greater than or equal to the depth of the groove;

[0011] Preferably, the thickness of the cover plate body is in the range of 600-700um, and the depth of the groove does not exceed 30um.

[0012] According to an embodiment of the present application, the electrostatic protection element and the light shielding layer are both arranged around the display area;

[0013] Preferably, the material of the light-shielding layer includes ink.

[0014] According to one embodiment of the present application, an anti-oxidation layer is formed on the surface of the electrostatic release portion, and the material of the anti-oxidation layer includes a conductive material;

[0015] Preferably, the material of the anti-oxidation layer includes nickel-gold.

[0016] According to an embodiment of the present application, the material of the electrostatic protection element includes at least one of indium tin oxide, titanium, aluminum, and copper;

[0017] Preferably, the material of the electrostatic release portion includes indium tin oxide, or the electrostatic release portion includes a titanium layer, an aluminum layer and a titanium layer stacked in sequence, or the material of the electrostatic release portion includes copper foil.

[0018] According to an embodiment of the present application, the frame area includes a first sub-area and a second sub-area located on the upper and lower sides of the window area, and a third sub-area and a fourth sub-area located on the left and right sides of the window area, wherein the electrostatic release portion is located in the fourth sub-area;

[0019] Preferably, the number of the electrostatic release parts is multiple;

[0020] Preferably, the number of the electrostatic release parts is two, and the two electrostatic release parts are arranged at intervals in the fourth sub-area.

[0021] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a display module, comprising a screen body and a cover plate as described in any one of the above items, wherein the cover plate is arranged on the light emitting surface side of the screen body.

[0022] According to one embodiment of the present application, the screen body includes a display portion, a bonding portion, and a bending portion connecting the display portion and the bonding portion, which are arranged relatively and spaced apart. The display module also includes a composite tape, which is arranged between the display portion and the bonding portion. The composite tape includes a first adhesive layer and a first conductive layer which are stacked, wherein the first conductive layer is grounded, and the electrostatic release portion is electrically connected to the first conductive layer.

[0023] According to an embodiment of the present application, the orthographic projection of the first conductive layer on the first adhesive layer covers and extends outside the first adhesive layer, so that the first conductive layer is directly electrically connected to the electrostatic release unit.

[0024] According to an embodiment of the present application, the display module further includes:

[0025] A flexible circuit board, one end of which is bonded to the bonding portion, and the other end of which extends to a side of the composite tape away from the display portion, wherein the flexible circuit board is provided with a first grounding point electrically connected to the first conductive layer in the composite tape;

[0026] The insulating tape is arranged on a side of the flexible circuit board away from the composite tape, and the insulating tape comprises a second conductive layer, and the second conductive layer electrically connects the first grounding point on the flexible circuit board with the electrostatic release portion.

[0027] The beneficial effect of the present application is that the present application sets a cover plate including an electrostatic protection component, and the electrostatic protection component is located in the frame area, so that while the static electricity on the cover plate is released by the electrostatic protection component, the normal display of the display module can be guaranteed, thereby improving the anti-static ability of the display module while ensuring the display function. In addition, the present application also sets a shading layer to cover the part of the electrostatic protection component, so that the shading layer can protect the electrostatic protection component while shading. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0029] Figure 1 It is a structural schematic diagram of an embodiment of a display module of the present application;

[0030] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle cover plate when viewed from above;

[0031] Figure 3 In one embodiment Figure 2 Schematic diagram of the cross-section structure along the AA section line;

[0032] Figure 4 yes Figure 1 Diagram of the preparation process of the middle cover plate;

[0033] Figure 5 In another embodiment Figure 2 Schematic diagram of the cross-section structure along the AA section line;

[0034] Figure 6 is a schematic diagram of a specific structure of another embodiment of the display module of the present application;

[0035] Figure 7 yes Figure 6 Schematic diagram of the structure of the composite tape. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] See also Figure 1, an embodiment of the present application provides a display module 20. The display module 20 includes a screen body 21 and a cover plate 10. Among them, the cover plate 10 is arranged on one side of the light-emitting surface of the screen body 21, and the cover plate 10 can play a certain protective role on the screen body 21. The screen body 21 is used to display the picture, and it may specifically include a substrate, an array layer and a light-emitting device layer stacked in sequence. At the same time, the screen body 21 may specifically be an OLED (Organic Light-Emitting Diode) screen body, an LCD (Liquid Crystal Display) screen body or a Mirco-LED screen body and other structures. The present application does not limit the specific structure of the screen body 21. The screen body 21 includes a display area and a non-display area. The display area is used to display the picture, and usually includes a pixel driving circuit, a light-emitting device and other structures. The non-display area does not display the picture, and usually includes peripheral circuits and other structures.

[0041] See also Figure 2 The cover plate 10 includes a window area AA and a frame area NA arranged outside the window area AA. The window area AA is used to correspond to the display area of ​​the screen body 21, and the frame area NA corresponds to the non-display area of ​​the screen body 21.

[0042] For further information, see Figure 2 and Figure 3 The cover plate 10 also includes a cover plate body 11, an electrostatic protection component 12 and a shading layer 13. The cover plate body 11 is located in the window area AA and the frame area NA. It is the main structure in the cover plate 10 and plays a major supporting role. The electrostatic protection component 12 is arranged on one side of the cover plate body 11 and is located in the frame area NA, so that the electrostatic protection component 12 does not affect the normal display function of the display module 20. The electrostatic protection component 12 is made of conductive material and is used to guide the static electricity on the cover plate body 11. The shading layer 13 is arranged on the side of the electrostatic protection component 12 away from the cover plate body 11 and is located in the frame area NA. The shading layer 13 is used to shield the peripheral circuits and other structures in the screen body 21. Among them, the orthographic projection of the light-shielding layer 13 on the cover body 11 covers the partial orthographic projection of the electrostatic protection component 12 on the cover body 11, and at the same time, part of the electrostatic protection component 12 is exposed from the light-shielding layer 13 to serve as the electrostatic release part 121 of the electrostatic protection component 12, that is, part of the electrostatic protection component 12 is blocked by the light-shielding layer 13, and part is not blocked by the light-shielding layer 13, wherein the part of the electrostatic protection component 12 not blocked by the light-shielding layer 13 is electrically connected to the grounding point in the display module 20 as the electrostatic release part 121, so that the static electricity on the electrostatic protection component 12 enters the grounding point through the electrostatic release part 121, thereby releasing the static electricity in the cover 10.

[0043] In the prior art, when the display module 20 is subjected to copper rod friction or electrostatic (ESD) test, since the static electricity is not discharged or eliminated in time, at this time, the display module 20 often has bright green edges, gradually turns green on the front, and finally causes undesirable phenomena such as afterimages, bright spots, and screen flickering, which affect the product quality. However, in the present application, an electrostatic protection member 12 is provided on one side of the cover body 11 and in the frame area NA, and a portion of the electrostatic protection member 12 is exposed from the light shielding layer 13 to serve as an electrostatic release portion 121 of the electrostatic protection member 12. The electrostatic release portion 121 can be connected to the ground point (GND), so that the static electricity in the cover plate 10 can quickly gather to the electrostatic protection member 12, and reach the ground point through the electrostatic release portion 121, and finally can be directly discharged through the ground point. Therefore, the solution of the present application can effectively solve the static electricity problem of the display module 20, that is, it can prevent the screen body 21 in the display module 20 from having abnormal phenomena such as green screen and flower screen.

[0044] Furthermore, the present application also provides a light shielding layer 13 to cover part of the electrostatic protection element 12, so that the light shielding layer 13 can protect the electrostatic protection element 12 while shielding light.

[0045] In one embodiment, see Figure 4 During the preparation process, an electrostatic protection member 12 is first formed on the cover body 11, and then a shading layer 13 covering the electrostatic protection member 12 is formed on the side of the electrostatic protection member 12 away from the cover body 11. Finally, the shading layer 13 is patterned to expose part of the electrostatic protection member 12 as the electrostatic release portion 121.

[0046] See also Figure 5 In one embodiment of the present application, the surface of the cover body 11 is provided with a groove 111 located in the frame area NA, and the electrostatic protection member 12 is arranged in the groove 111, which can make the surface of the cover 10 flatter. At this time, during the preparation process, the cover body 11 is first grooved to form the groove 111, and then the electrostatic protection member 12 is formed in the groove 111, and then the light shielding layer 13 is formed, and finally the light shielding layer 13 is patterned to expose a portion of the electrostatic protection member 12 as the electrostatic release portion 121.

[0047] It should be noted that, in other embodiments, the surface of the cover body 11 may not be provided with the groove 111, for example, Figure 3 The electrostatic protection member 12 is directly disposed on the surface of the cover body 11 . In this case, the production process is simple and the strength of the cover body 11 can be prevented from being damaged during the grooving process.

[0048] In one embodiment, see Figure 5 , the thickness of the electrostatic protection member 12 is greater than or equal to the depth of the groove 111 ( Figure 5The thickness of the electrostatic protection member 12 is equal to the depth of the groove 111 for schematic illustration), which can facilitate the subsequent electrical connection between the electrostatic release portion 121 on the electrostatic protection member 12 and the grounding point. Of course, in other embodiments, the thickness of the electrostatic protection member 12 can also be less than the depth of the groove 111.

[0049] In one embodiment, the thickness of the cover body 11 is in the range of 600um-700um, for example, the thickness of the cover body 11 is 600um, 650um, 680um or 700um. When the thickness of the cover body 11 is less than 600um, the thickness of the cover body 11 is relatively thin, and the strength of the cover body 11 is also weakened accordingly. When the thickness of the cover body 11 is greater than 700um, the thickness of the display module 20 will increase, which is not conducive to the development of thinness and lightness. Therefore, when the thickness of the cover body 11 is set in the range of 600um-700um, it can ensure strength and also help reduce the thickness of the display module 20.

[0050] In one embodiment, in order to prevent the setting of the groove 111 from affecting the strength of the cover body 11, the depth of the groove 111 is set to not exceed 30um, that is, the depth of the groove 111 is less than or equal to 30um, for example, the depth of the groove 111 is 20um, 25um or 30um.

[0051] It should be noted that the present application does not impose any specific restrictions on the thickness of the cover body 11 and the depth of the groove 111, and they can be set according to actual needs.

[0052] See also Figure 4 In one embodiment, the electrostatic protection element 12 and the shading layer 13 are both arranged around the window area AA. At this time, the electrostatic protection element 12 and the shading layer 13 are both fully enclosed structures. The electrostatic protection element 12 can effectively release static electricity at various positions in the cover plate 10, thereby improving the electrostatic protection capability of the cover plate 10.

[0053] It should be noted that, in other embodiments, the electrostatic protection element 12 and the light shielding layer 13 are also arranged at a local position of the frame area NA. At this time, the electrostatic protection element 12 and the light shielding layer 13 are in a semi-enclosed structure, such as any side edge of the frame area NA, or any bottom edge of the frame area NA. There is no limitation here, and the specific structure can be selected according to needs. Or in other embodiments, it can also be that: the light shielding layer 13 is arranged around the window area AA, and the electrostatic protection element 12 is only arranged around part of the window area AA, that is, the light shielding layer 13 is a fully enclosed structure, and the electrostatic protection element 12 is a semi-enclosed structure.

[0054] In one embodiment, considering that ink is a common light-shielding material with low cost and good light-shielding effect, the material of the light-shielding layer 13 includes ink.

[0055] In another embodiment of the present application, an anti-oxidation layer (not shown) is formed on the surface of the electrostatic discharge unit 121, wherein the material of the anti-oxidation layer includes a conductive material. Specifically, the conductive material anti-oxidation layer can prevent the electrostatic discharge unit 121 from oxidizing, thereby ensuring the electrostatic discharge capability.

[0056] In one embodiment, considering that nickel-gold has good oxidation resistance, corrosion resistance and wear resistance, and the cost of nickel-gold is relatively low, the material for setting the anti-oxidation layer includes nickel-gold. In this case, during the preparation process, nickel-gold can be formed on the surface of the electrostatic release part 121 by an electroplating process to obtain the anti-oxidation layer.

[0057] Optionally, in some other embodiments, the anti-oxidation layer may also include zinc, chromium, titanium, tungsten carbide, etc., which are not described in detail here.

[0058] In another embodiment of the present application, the material of the electrostatic protection element 12 includes at least one of indium tin oxide (ITO), titanium, aluminum, and copper. Indium tin oxide, titanium, aluminum, and copper often have high conductivity. Therefore, using any one of these materials or a combination of several materials as the material of the electrostatic protection element 12 can well improve the electrostatic discharge performance of the electrostatic protection element 12, thereby indirectly improving the yield rate of the display module 20.

[0059] For example, in one application scenario, the material of the electrostatic protection member 12 includes indium tin oxide (ITO). Indium tin oxide not only has good electrical conductivity, but also has high carrier mobility and low carrier concentration. Therefore, the electrostatic protection member 12 is prepared using indium tin oxide, so that the electrostatic protection member 12 can have better electrostatic discharge performance, thereby indirectly improving the yield rate of the display module 20.

[0060] In another application scenario, the material of the electrostatic protection element 12 includes a titanium layer, an aluminum layer, and a titanium layer stacked in sequence. This arrangement can reduce the transmission impedance of the electrostatic protection element 12 and ensure its electrostatic release capability.

[0061] In another application scenario, the material of the electrostatic protection member 12 includes copper foil. Copper foil itself has good electromagnetic shielding and antistatic advantages, and its price is low. Therefore, when the material of the electrostatic protection member 12 is copper foil, not only can the electrostatic protection member 12 have a good antistatic effect, but also can reduce the production cost of the cover plate 10, thereby reducing the production cost of the display module 20.

[0062] See also Figure 2In another embodiment of the present application, the frame area NA includes a first sub-area 112 and a second sub-area 113 located on the upper and lower sides of the window area AA, and a third sub-area 114 and a fourth sub-area 115 located on the left and right sides of the window area AA. Among them, the electrostatic release part 121 is located in the second sub-area 113. Specifically, the first sub-area 112 is the upper frame area, the second sub-area 113 is the lower frame area, the third sub-area 114 is the left frame area, and the fourth sub-area 115 is the right frame area. Usually, the lower frame area is the widest, so placing the electrostatic release part 121 in the second sub-area 113 is conducive to the electrical connection between the electrostatic release part 121 and the grounding point.

[0063] However, in other embodiments, the electrostatic discharge portion 121 may also be located in other areas of the border area NA except the second sub-area 113 , for example, in the first sub-area 112 , the third sub-area 114 or the fourth sub-area 115 .

[0064] In one embodiment, the number of the electrostatic release parts 121 is multiple, which can increase the speed of the static electricity on the electrostatic protection element 12 being released to the ground point, and further improve the anti-static ability of the cover plate 10. Figure 2 In one embodiment, the number of the electrostatic release parts 121 is two, and the two electrostatic release parts 121 are arranged at intervals in the second sub-area 113. In other embodiments, the number of the electrostatic release parts 121 may also be three, four or even more, which is not limited here.

[0065] See also Figure 6 In one embodiment, the screen body 21 includes a display portion 211, a bonding portion 212, and a bending portion 213 connecting the display portion 211 and the bonding portion 212, which are relatively spaced apart. The display module 20 also includes a composite tape 22, which is arranged between the display portion 211 and the bonding portion 212.

[0066] Specifically, the display part 211 is used to display images, and the bonding part 212 is used to bond the flexible circuit board 23, the chip 25 and other components. The bonding part 212 is arranged on the back of the display part 211, which is conducive to the narrow frame of the display module 20. The composite tape 22 is arranged between the display part 211 and the bonding part 212 to protect the screen body 21 and dissipate heat.

[0067] See also Figure 7In one embodiment, the composite tape 22 includes a first adhesive layer 221 and a first conductive layer 222 which are stacked. The first adhesive layer 221 is used to adhere the composite tape 22 to the screen body 21, and the first conductive layer 222 plays a role in shielding signals and transmitting static electricity. At the same time, the composite tape 22 also includes a first buffer layer 223 located between the first adhesive layer 221 and the first conductive layer 222, and the first buffer layer 223 plays a buffering role. In a specific example, the first adhesive layer 221 includes mesh glue, the first conductive layer 222 includes copper foil, and the first buffer layer 223 includes foam.

[0068] In one embodiment, the first conductive layer 222 is grounded, and the electrostatic release portion 121 is electrically connected to the first conductive layer 222 , so that the static electricity on the electrostatic protection element 12 is discharged through the first conductive layer 222 .

[0069] In one application scenario, the electrostatic release portion 121 is directly electrically connected to the first conductive layer 222. At this time, in order to achieve direct electrical connection between the electrostatic release portion 121 and the first conductive layer 222, the orthographic projection of the first conductive layer 222 on the first adhesive layer 221 covers and extends beyond the first adhesive layer 221. That is, the first conductive layer 222 is extended at this time, so that the first conductive layer 222 is directly electrically connected to the electrostatic release portion 121.

[0070] Continue reading Figure 6 In another application scenario, the electrostatic discharge unit 121 is indirectly electrically connected to the first conductive layer 222 via the insulating tape 24 and the flexible circuit board 23 .

[0071] Specifically, the insulating tape 24 is arranged on the side of the flexible circuit board 23 away from the composite tape 22, and it plays a role in shielding or isolating the interference of electromagnetic waves and radio waves during high-frequency transmission. The insulating tape 24 includes a second conductive layer (not shown in the figure), and the second conductive layer is electrically connected to the first grounding point on the flexible circuit board 23, and the first grounding point (not shown in the figure) on the flexible circuit board 23 is electrically connected to the first conductive layer 222 in the composite tape 22. Therefore, the electrostatic release part 121 is provided to be electrically connected to the second conductive layer in the insulating tape 24, so that the static electricity on the electrostatic protection component 12 is first transmitted to the second conductive layer in the insulating tape 24, and then transmitted to the flexible circuit board 23, and finally transmitted to the first conductive layer 222 in the composite tape 22, and finally discharged.

[0072] Through the above two methods, the static electricity on the electrostatic protection element 12 can be discharged, which can effectively avoid abnormal phenomena such as green screen and flowery screen on the screen 21 and improve the display effect of the screen 21.

[0073] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel" and "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0074] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0075] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cover plate, characterized in that: The cover plate includes a window area and a frame area arranged outside the window area, and the cover plate also includes: A cover body, located in the window area and the frame area; An electrostatic protection member is disposed on one side of the cover body and located in the frame area; A shading layer is arranged on the side of the electrostatic protection member away from the cover body and located in the frame area, wherein the orthographic projection of the shading layer on the cover body covers a portion of the orthographic projection of the electrostatic protection member on the cover body, and at the same time, a portion of the electrostatic protection member is exposed from the shading layer to serve as an electrostatic release portion of the electrostatic protection member.

2. The cover plate according to claim 1, characterized in that: The surface of the cover body is provided with a groove located in the frame area, and the electrostatic protection element is arranged in the groove; Preferably, the thickness of the electrostatic protection element is greater than or equal to the depth of the groove; Preferably, the thickness of the cover plate body is in the range of 600-700um, and the depth of the groove does not exceed 30um.

3. The cover plate according to claim 1, characterized in that: The electrostatic protection element and the light shielding layer are both arranged around the window area; Preferably, the material of the light-shielding layer includes ink.

4. The cover plate according to claim 1, characterized in that: An anti-oxidation layer is formed on the surface of the electrostatic discharge unit, and the material of the anti-oxidation layer includes a conductive material; Preferably, the material of the anti-oxidation layer includes nickel-gold.

5. The cover plate according to claim 1, characterized in that: The material of the electrostatic protection element includes at least one of indium tin oxide, titanium, aluminum, and copper; Preferably, the material of the electrostatic release portion includes indium tin oxide, or the electrostatic release portion includes a titanium layer, an aluminum layer and a titanium layer stacked in sequence, or the material of the electrostatic release portion includes copper foil.

6. The cover plate according to claim 1, characterized in that: The frame area includes a first sub-area and a second sub-area located at the upper and lower sides of the window area, and a third sub-area and a fourth sub-area located at the left and right sides of the window area, wherein the electrostatic release portion is located in the second sub-area; Preferably, the number of the electrostatic release parts is multiple; Preferably, the number of the electrostatic release parts is two, and the two electrostatic release parts are arranged at intervals in the second sub-area.

7. A display module, characterized in that: It comprises a screen body and a cover plate as claimed in any one of claims 1 to 6, wherein the cover plate is arranged on a light emitting surface side of the screen body.

8. The display module according to claim 7, characterized in that: The screen body includes a display part, a bonding part and a bending part connecting the display part and the bonding part which are arranged opposite to and at intervals. The display module also includes a composite tape which is arranged between the display part and the bonding part. The composite tape includes a first adhesive layer and a first conductive layer which are stacked. The first conductive layer is grounded and the electrostatic release part is electrically connected to the first conductive layer.

9. The display module according to claim 8, characterized in that: The orthographic projection of the first conductive layer on the first adhesive layer covers and extends outside the first adhesive layer, so that the first conductive layer is directly electrically connected to the electrostatic discharge unit.

10. The display module according to claim 8, characterized in that: The display module further comprises: A flexible circuit board, one end of which is bonded to the bonding portion, and the other end of which extends to a side of the composite tape away from the display portion, wherein the flexible circuit board is provided with a first grounding point electrically connected to the first conductive layer in the composite tape; The insulating tape is arranged on a side of the flexible circuit board away from the composite tape, and the insulating tape comprises a second conductive layer, and the second conductive layer electrically connects the first grounding point on the flexible circuit board with the electrostatic release portion.

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