Display module

Abstract

This invention provides a display module comprising: a cover plate including a substrate, the substrate including opposing first and second surfaces; a display panel disposed near the second surface; and an electrostatic discharge structure for establishing a release channel for electrostatic charges generated on the cover plate; wherein the electrostatic discharge structure includes a first conductive layer formed on the first surface; and / or, the electrostatic discharge structure includes a second conductive layer located on the side of the display panel opposite to the second surface, and the second conductive layer is attached to a portion of the peripheral area of ​​the second surface. By providing a first electrostatic discharge channel through the first conductive layer and / or providing a second electrostatic discharge channel through the second conductive layer, static electricity on the surface of the cover plate is released, thereby preventing display defects caused by static electricity flowing from the cover plate surface into the support layer under the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display module. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are a type of current-driven organic light-emitting device that emits light through carrier injection and recombination, with the luminous intensity proportional to the injected current. Because OLEDs are easy to manufacture, require only low driving voltage, and are thinner, lighter, brighter, consume less power, have faster response times, higher resolution, and greater flexibility than LCDs, they are particularly prominent in applications requiring flat and curved displays.

[0003] If an electrostatic discharge (ESD) protection process is not performed during the manufacturing of OLED displays, electrostatic charge can accumulate during ESD testing and consumer use. If this accumulated charge cannot be released, it can cause ESD breakdown. ESD breakdown can lead to abnormal pixel circuits on the array substrate of the display device, and in severe cases, it can cause short circuits in the pixel circuits, rendering the array substrate unable to function properly.

[0004] Existing OLED display devices employ a conductive liquid coating on the edges of the display panel. The conductive liquid cures to form a conductive layer that electrically connects the copper foil layer of the composite tape to the ink layer around the cover plate, creating an electrostatic discharge channel for easy electrostatic discharge from the cover plate surface. However, due to the cumbersome and unreliable conductive liquid coating process, an effective electrostatic discharge channel cannot be formed between the copper foil layer and the cover plate. This results in the inability to release static electricity from the cover plate surface, easily causing damage to the display panel.

[0005] In view of this, it is necessary to propose a new display module with a stable electrostatic channel that can release static electricity in a timely manner and prevent electrostatic damage to the display panel. Summary of the Invention

[0006] The purpose of this invention is to provide a display module in which an electrostatic discharge structure is disposed on at least one side surface of the cover plate to promptly eliminate static electricity on the surface of the cover plate and avoid damage to the array substrate caused by the accumulation of net charge on the surface of the cover plate and its transfer toward the low-resistance coating of the support layer under the display panel.

[0007] To address the aforementioned problems, the present invention provides a display module comprising: a cover plate, the cover plate including a substrate, the substrate including opposing first and second surfaces; a display panel disposed near the second surface; and an electrostatic discharge structure for establishing a release channel for electrostatic charges generated on the cover plate; wherein the electrostatic discharge structure includes a first conductive layer formed on the first surface; and / or, the electrostatic discharge structure includes a second conductive layer located on the side of the display panel opposite to the second surface, and the second conductive layer is attached to a portion of the peripheral area of ​​the second surface.

[0008] As an optional technical solution, the first conductive layer is a transparent conductive layer that covers the entire surface of the first surface.

[0009] As an optional technical solution, the transparent conductive layer includes a titanium dioxide transparent conductive layer or an aluminum oxide transparent conductive layer.

[0010] As an optional technical solution, the cover plate further includes an anti-fingerprint coating, which is formed on the surface of the first conductive layer away from the substrate.

[0011] As an optional technical solution, a lug extends from the edge of the second conductive layer, and the lug is attached to a portion of the peripheral area of ​​the second surface.

[0012] As an optional technical solution, a light-shielding layer is provided in the surrounding area, and the lug is attached to the light-shielding layer.

[0013] As an optional technical solution, a composite tape is also included, which includes a foam layer, an adhesive layer and an insulating layer stacked together, wherein the second conductive layer is formed on the side of the insulating layer away from the foam layer, wherein the foam layer is close to the lower side of the display panel and the second conductive layer is away from the lower side of the display panel.

[0014] As an optional technical solution, the second conductive layer is a copper foil conductive layer.

[0015] As an optional technical solution, the display panel is a flexible OLED display panel.

[0016] As an optional technical solution, the substrate is a glass substrate.

[0017] Compared with the prior art, the present invention provides a display module including an electrostatic discharge structure. The first conductive layer of the electrostatic discharge structure provides a first electrostatic discharge channel and / or the second conductive layer of the electrostatic discharge structure provides a second electrostatic discharge channel, thereby releasing the electrostatic charge on the surface of the cover plate, thereby avoiding the problem of poor display of the display panel caused by the electrostatic charge on the surface of the cover plate flowing into the support layer under the display panel, and improving the stability of the display module.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a partial cross-sectional schematic diagram of an existing display device.

[0021] Figure 2 and Figure 3 This is a schematic diagram illustrating the principle of electrostatic discharge (ESD) damage to the display panel in existing display devices.

[0022] Figure 4 This is a cross-sectional schematic diagram of the display module in the first embodiment of the present invention.

[0023] Figure 5 for Figure 4 Schematic diagram of the cross section of the middle cover plate.

[0024] Figure 6 This is a partial cross-sectional schematic diagram of a display module according to another embodiment of the present invention.

[0025] Figure 7 for Figure 6 A cross-sectional schematic diagram of the composite tape.

[0026] Figure 8 for Figure 7 A top view of the metal layer of the composite tape.

[0027] Figure 9 for Figure 6 Schematic diagram of the cross section of the middle cover plate.

[0028] Figure 10 This is a partial cross-sectional schematic diagram of the display module in the third embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] like Figure 1 As shown, a conventional display device 10, such as an OLED display device, includes a stacked structure. This stacked structure comprises a cover plate 1, an optical adhesive layer 2, a polarizer 3, a display panel 4, a support layer 5, and a composite tape layer 6, stacked sequentially. A conductive layer 7 for discharging static electricity is formed on the sidewall of the aforementioned stacked structure. The conductive layer 7 conducts electricity between the cover plate 1 and the metal layer 63 on the composite tape 6, causing the static charge accumulated on the surface of the cover plate 1 to move towards the metal layer 63. The metal layer 63 is electrically connected to a conductor in the mid-frame of the display device 10, achieving electrostatic grounding. The composite tape 6 includes a stacked foam layer 61, an insulating layer 62, and a metal layer 63, with the foam layer 61 contacting the support layer 5.

[0032] The conductive layer 7 is formed, for example, by coating a liquid conductive liquid and then curing it. In this process, it is necessary to control the viscosity of the conductive liquid. If the viscosity is too high, the conductive liquid cannot be coated smoothly; if the viscosity is too low, the conductive liquid will flow too fast and cannot form an effective cover. This can easily lead to the metal layer 63 not forming a stable electrical connection with the cover plate 1, and not forming an effective electrostatic discharge channel, resulting in the accumulation of electrostatic charge and affecting the display quality of the display panel 4.

[0033] like Figure 1 and Figure 2 As shown, when the conductive layer 7 fails to conduct electricity between the cover glass (CG) 1 and the metal layer 63 of the composite tape 6, the positive static charge generated on the surface of the cover glass 1 has no effective release channel.

[0034] In this embodiment, the cover plate 1 is attached to the polarizer (POL) 3 on the upper side (or light-emitting side) of the display panel 4 via an optically clear adhesive (OCA) layer 2.

[0035] like Figure 2and Figure 3 As shown, the display panel 4 is, for example, a flexible OLED display panel, which, from bottom to top, includes a flexible substrate (e.g., polyimide) 41, a buffer layer 42, and a thin-film transistor structure. The thin-film transistor structure includes a semiconductor layer 43, an interlayer insulating layer 44, a gate electrode 45, a source electrode 46, and a drain electrode 47. A back-protected filter (BPF) 5 is disposed below the flexible substrate 41. The back-protected filter 5 includes a low-resistance conductive coating (not shown). Since the conductive layer 7 is still present, and because the low-resistance conductive coating has a low potential, positive electrostatic charges on the surface of the cover plate 1 move towards the low-resistance conductive coating and accumulate.

[0036] Since the support layer 5 and the flexible substrate 41 are arranged adjacent to each other, the positive electrostatic charge accumulated in the support layer 5 induces a positive charge on the flexible substrate 41 side near the buffer layer 42. Due to the electric field, the semiconductor layer 43, such as a low temperature poly-silicon (LTPS) semiconductor layer, induces electrons in advance. The electrons combine with holes, resulting in a decrease in carrier concentration and a negative bias of the threshold voltage (Vth) of the thin film transistor, which in turn causes the display panel 4 to have a poor display.

[0037] In view of this, it is necessary to overcome the problem of display panel malfunction caused by abnormal discharge channels of electrostatic charge on the surface of the cover plate in existing display devices, which causes electrostatic charge to move towards the low-resistance coating of the support layer, resulting in a negative shift of the threshold voltage of the thin-film transistor.

[0038] The purpose of this invention is to provide a display module that includes an electrostatic discharge structure. The electrostatic discharge structure can provide a stable electrostatic discharge channel to release the electrostatic charge on the surface of the cover plate of the display module, thereby effectively preventing electrostatic charge from flowing into the support layer under the display panel of the display module and causing display defects.

[0039] Specifically, the present invention provides a display module including a cover plate, a display panel, and an electrostatic discharge structure. The cover plate includes a substrate, which includes a first surface and a second surface facing each other. The display panel is disposed close to the second surface. The electrostatic discharge structure is used to establish a release channel for electrostatic charges generated on the cover plate. The electrostatic discharge structure includes a first conductive layer formed on the first surface. And / or, the electrostatic discharge structure includes a second conductive layer located on the side of the display panel away from the second surface, and the second conductive layer is attached to a portion of the peripheral area of ​​the second surface.

[0040] In this embodiment, the first conductive layer provides a first electrostatic discharge channel, which is, for example, the electrostatic charge on the surface of the cover plate flows into the first conductive layer and is released through the air; the second conductive layer provides a second electrostatic discharge channel, for example, the electrostatic charge on the surface of the cover plate flows into the second conductive layer, and the second conductive layer is electrically connected to the conductor on the middle frame of the display module and grounded for release.

[0041] In a preferred embodiment, the display module may have both a first electrostatic discharge channel and a second electrostatic discharge channel.

[0042] The first electrostatic discharge channel and / or the second electrostatic discharge channel are respectively used to block the electrostatic charge on the surface of the cover plate from flowing into the support layer under the flexible substrate of the display panel, thereby effectively overcoming the display defects caused by the inability of the display panel to release static electricity.

[0043] like Figure 4 and Figure 5 As shown, in the first embodiment of the present invention, a display module 1000 is provided, which includes the aforementioned first electrostatic discharge channel.

[0044] The display module 1000 includes a cover plate 100, a display panel 200, and an electrostatic discharge structure. The cover plate 100 includes a substrate 110, which includes a first surface 111 and a second surface 112 facing each other. The display panel 200 is disposed close to the second surface 112. The electrostatic discharge structure is used to establish a release channel for electrostatic charges generated on the surface of the cover plate 100. The electrostatic discharge structure includes a first conductive layer 120, which is formed on the first surface 111.

[0045] In a preferred embodiment, the first conductive layer 120 is a transparent conductive layer that covers the entire surface of the first surface 111. The transparent conductive layer is, for example, a transparent conductive layer containing oxygen, including a titanium dioxide transparent conductive layer, an aluminum oxide transparent conductive layer, etc. Preferably, it is a titanium dioxide transparent conductive layer with a thickness of 10nm-20nm.

[0046] like Figure 5 As shown, the cover plate 100 includes a substrate 110, a first conductive layer 120 and an anti-fingerprint coating 130 are sequentially formed on the substrate 110, and the first conductive layer 120 is sandwiched between the substrate 110 and the anti-fingerprint coating 130. The first conductive layer 120 provides an electrostatic discharge channel on the surface of the cover plate 100 on the one hand, and serves as a carrier film layer for the anti-fingerprint coating 130 on the other hand.

[0047] Since the anti-fingerprint coating 130 includes fluoride, in order to improve the adhesion of the fluoride, the first conductive layer 120 is preferably made of a transparent conductive material containing oxygen. Fluorine and oxygen elements easily combine to form stable chemical bonds, so that the anti-fingerprint coating 130 can be stably attached to the first conductive layer 120.

[0048] In other words, the first conductive layer 120 is a transparent conductive layer containing oxygen, which can take into account both the electrostatic discharge of the cover plate 100 and the ability to support the anti-fingerprint coating 130. While increasing conductivity, it does not affect the original characteristics of the cover plate 100.

[0049] Furthermore, the first conductive layer 120 can be a single-layer film structure or a multi-layer film composite structure. In the multi-layer film composite structure, the uppermost film layer is bonded to the anti-fingerprint coating 130, therefore the uppermost film layer must contain oxygen.

[0050] Furthermore, since the second surface 112 of the substrate 110 is close to the touch layer, the first conductive layer 120 used to provide an electrostatic discharge channel is typically located away from the second surface 112 in order to avoid telecommunications interference.

[0051] In a preferred embodiment, the substrate 110 is, for example, a glass substrate.

[0052] like Figure 4 As shown, the display module 1000 also includes an optical adhesive layer 300, a polarizer 400, a support layer 500, and a composite tape 600. The polarizer 400 and the support layer 500 are respectively disposed on the upper and lower sides of the display panel 200. The cover plate 100 is attached to the upper side of the display panel 200 through the optical adhesive layer 300.

[0053] The display panel 200 is, for example, a flexible display panel, which includes a flexible substrate, and a driving array, a light-emitting layer, and a sealing layer are sequentially disposed on the upper side of the flexible substrate.

[0054] The support layer 500 is disposed on the underside of the flexible substrate. The support layer is selected from, for example, PI (polyimide) and PET (polyethylene terephthalate).

[0055] The composite tape 600 includes, for example, foam, an adhesive layer, an insulating layer, and a metal layer, wherein the foam is attached to the side of the support layer 500 away from the display panel 200 by the adhesive layer.

[0056] In the first embodiment of the present invention, the static electricity formed on the upper surface of the cover plate 100 of the display module 1000 is conducted to the titanium dioxide transparent conductive layer (first conductive layer 120) and then released through the air, so that static electricity will not accumulate on the upper surface of the cover plate 100. Therefore, no static charge will flow into the support layer 500, and the display panel 200 will not have display defects caused by static electricity.

[0057] like Figures 6 to 9 As shown, in the second embodiment of the present invention, a display module 2000 is also provided, which includes the aforementioned second electrostatic discharge channel.

[0058] The display module 2000 includes a cover plate 2100, a display panel 2400, and an electrostatic discharge structure. The cover plate 2100 includes a substrate 2110, which includes a first surface 2111 and a second surface 2112 facing each other. The display panel 2400 is disposed close to the second surface 2112. The electrostatic discharge structure is used to establish a release channel for electrostatic charges generated on the surface of the cover plate 2100. The electrostatic discharge structure includes a second conductive layer 2630, which is disposed on the side of the display panel 2400 away from the first surface 2111, and the second conductive layer 2630 is attached to a portion of the peripheral area of ​​the second surface 2112.

[0059] like Figures 6 to 9 As shown, the edge 2632 of the second conductive layer 2630 extends into a lug 2631, which fits into a portion of the peripheral area of ​​the second surface 2112.

[0060] Furthermore, the display module 2000 also includes a composite tape 2600, which includes a foam layer 2610, an adhesive layer (not shown), and an insulating layer 2620. A second conductive layer 2630 is formed on the side of the insulating layer 2620 away from the foam layer 2610. The adhesive layer is formed on the foam layer 2610 for fixing the foam layer 2610 to the support layer 2500 on the lower side of the display panel 2400.

[0061] In this embodiment, the edges 2632 of the second conductive layer 2630, the edge of the foam layer 2610, and the edge of the insulating layer 2620 are roughly flush. Preferably, the lugs 2631 protrude beyond the edges of the foam layer 2610 and the insulating layer 2620.

[0062] like Figure 8 As shown, the number of lugs 2631 at the edge 2632 of the second conductive layer 2630 in the composite tape 2600 can be one or more.

[0063] It should be noted that the number, shape, and arrangement of the lugs 2631 are not limited to... Figure 8 The shapes and arrangements shown in the illustration are limited. In actual use, the number, shape, and arrangement of the lugs can be set according to the actual static electricity elimination requirements and the structure of the display panel and display module itself.

[0064] In a preferred embodiment, the second conductive layer 2630 is, for example, a copper foil conductive layer.

[0065] like Figure 6 and Figure 9 As shown, the cover plate 2100 includes, from top to bottom, a substrate 2110, a silicon dioxide layer 2120, and an anti-fingerprint coating 2130. The second surface 2112 of the substrate 2110 faces the display panel 2400. A light-shielding layer (not shown) is provided in the peripheral area of ​​the second surface 2112. This light-shielding layer is, for example, an ink layer coated on the peripheral area, where the peripheral area refers to the area surrounding the display panel 2400. The light-shielding layer is used to block the lug 2631.

[0066] In this embodiment, the lugs 2631 on the second conductive layer 2630 are attached to the ink layer.

[0067] In a preferred embodiment, the substrate 2110 is, for example, a glass substrate.

[0068] like Figure 6 As shown, the display module 2000 also includes an optical adhesive layer 2200, a polarizer 2300, and a support layer 2500, wherein the polarizer 2300 and the support layer 2500 are respectively disposed on the upper and lower sides of the display panel 2400; the cover plate 2100 is attached to the upper side of the display panel 2400 through the optical adhesive layer 2200.

[0069] The display panel 2400 is, for example, a flexible display panel, which includes a flexible substrate, and a driving array, a light-emitting layer, and a sealing layer are sequentially disposed on the upper side of the flexible substrate.

[0070] A support layer 2500 is disposed on the underside of the flexible substrate. The support layer is selected from materials such as PI (polyimide) and PET (polyethylene terephthalate). In this embodiment, the second conductive layer 2630 is located on the side of the support layer 2500 away from the display panel 2400.

[0071] In the second embodiment of the present invention, the static electricity formed on the upper surface of the cover plate 2100 of the display module 2000 is conducted to the copper foil layer (second conductive layer 2630) through the lug 2631, and grounded through the conductor (not shown) of the middle frame (not shown) of the display module 2000 via the copper foil, so that the static electricity on the upper surface of the cover plate 2100 is released. Therefore, no static electricity will flow into the support layer 2500, and the display panel 2400 will not have display defects caused by static electricity.

[0072] like Figure 10 As shown, in the third embodiment of the present invention, a display module 3000 is provided, which includes the first electrostatic discharge channel and the second electrostatic discharge channel described above.

[0073] The display module 3000 includes a cover plate 3100, a display panel 3400, and an electrostatic discharge structure. The cover plate 3100 includes a substrate 3110, which includes a first surface 3111 and a second surface 3112 facing each other. The display panel 3400 is disposed close to the second surface 3112. The electrostatic discharge structure is used to establish a release channel for the electrostatic charge generated on the cover plate 3100. The electrostatic discharge structure includes a first conductive layer 3120 and a second conductive layer 3630. The first conductive layer 3120 is formed on the first surface 3111. The second conductive layer 3630 is located on the side of the display panel 3400 away from the second surface 3112, and the second conductive layer 3630 is attached to a portion of the peripheral area of ​​the second surface 3112.

[0074] In a preferred embodiment, the first conductive layer 3120 is, for example, a transparent conductive layer of titanium dioxide.

[0075] In a preferred embodiment, the edge of the second conductive layer 3630 includes a lug 3631, which fits into a portion of the peripheral region of the second surface 3112. The second conductive layer 3630 is, for example, a copper foil layer in a composite tape 3600.

[0076] The first conductive layer 3120 in display module 3000 is similar to the first conductive layer 120 in display module 1000; the second conductive layer 3630 in display module 3000 is similar to the second conductive layer 2630 in display module 2000; therefore, the descriptions of the first conductive layer 3120 and the second conductive layer 3630 can be referred to the descriptions of the first conductive layer 120 and the second conductive layer 2630 above, and will not be repeated here.

[0077] like Figure 10 As shown, the display module 3000 also includes an optical adhesive layer 3200, a polarizer 3300, and a support layer 3500, wherein the polarizer 3300 and the support layer 3500 are respectively disposed on the upper and lower sides of the display panel 3400; the cover plate 3100 is attached to the upper side of the display panel 3400 through the optical adhesive layer 3200.

[0078] The display panel 3400 is, for example, a flexible display panel, which includes a flexible substrate, and a driving array, a light-emitting layer, and a sealing layer are sequentially disposed on the upper side of the flexible substrate.

[0079] A support layer 3500 is disposed on the underside of the flexible substrate. The support layer is selected from materials such as PI (polyimide) and PET (polyethylene terephthalate). Preferably, the second conductive layer 3630 is located on the side of the support layer 3500 away from the display panel 3400.

[0080] like Figure 10 As shown, the first conductive layer 3120 is further provided with an anti-fingerprint coating 3130 on the side away from the substrate 3110.

[0081] In the third embodiment of the present invention, the static electricity formed on the upper surface of the cover plate 3100 of the display module 3000 is released through the air via the transparent conductive titanium dioxide layer (first conductive layer 3120) and conducted through the lug 3631 to the copper foil layer (second conductive layer 3630). The copper foil is then grounded to the conductor (not shown) of the middle frame (not shown) of the display module 3000, thereby releasing the static electricity on the upper surface of the cover plate 3100. The use of dual static electricity release channels makes the static electricity elimination effect on the cover plate better.

[0082] In summary, the present invention provides a display module including an electrostatic discharge structure. The first conductive layer of the electrostatic discharge structure provides a first electrostatic discharge channel and / or the second conductive layer of the electrostatic discharge structure provides a second electrostatic discharge channel, thereby releasing the electrostatic charge on the surface of the cover plate, thus avoiding the problem of poor display of the display panel caused by the electrostatic charge on the surface of the cover plate flowing into the support layer under the display panel, and improving the stability of the display module.

[0083] The present invention has been described by the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other. It must be noted that the present invention may have other various embodiments, and those skilled in the art can make various corresponding changes and modifications based on the present invention without departing from its spirit and essence; however, all such corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. A display module, characterized in that, The display module includes: A cover plate, the cover plate including a substrate, the substrate including opposing first and second surfaces; A display panel, disposed near the second surface, is a flexible OLED display panel, comprising, from bottom to top, a flexible substrate, a buffer layer, and a thin-film transistor structure. A support layer is disposed below the flexible substrate, and the support layer includes a low-resistance conductive coating. An electrostatic discharge structure is used to establish a release channel for the electrostatic charge generated on the cover plate; The electrostatic discharge structure includes a first conductive layer formed on the first surface; the first conductive layer provides a first electrostatic discharge channel, through which electrostatic charges on the surface of the cover plate flow into the first conductive layer and are released through the air; The cover plate also includes an anti-fingerprint coating, which is formed on the surface of the first conductive layer away from the substrate. The first conductive layer is sandwiched between the substrate and the anti-fingerprint coating. The anti-fingerprint coating includes fluoride. The first conductive layer is made of a transparent conductive material containing oxygen. Fluorine and oxygen combine to form stable chemical bonds, so that the anti-fingerprint coating is stably attached to the first conductive layer.

2. The display module according to claim 1, characterized in that, The first conductive layer is a transparent conductive layer that covers the entire surface of the first surface.

3. The display module according to claim 2, characterized in that, The transparent conductive layer includes a titanium dioxide transparent conductive layer or an aluminum oxide transparent conductive layer.

4. The display module according to claim 1, characterized in that, The electrostatic discharge structure includes a second conductive layer located on the side of the display panel away from the second surface, and the second conductive layer is attached to a portion of the peripheral area of ​​the second surface; the second conductive layer provides a second electrostatic discharge channel so that after the electrostatic charge on the surface of the cover plate flows into the second conductive layer, it is released to ground through the second conductive layer and the conductor on the middle frame of the display module. A lug extends from the edge of the second conductive layer, and the lug fits into a portion of the peripheral area of ​​the second surface.

5. The display module according to claim 4, characterized in that, A light-shielding layer is provided in the surrounding area, and the lug is attached to the light-shielding layer.

6. The display module according to claim 4, characterized in that, It also includes a composite tape comprising a foam layer, an adhesive layer, and an insulating layer stacked together, wherein the second conductive layer is formed on the side of the insulating layer away from the foam layer, wherein the foam layer is close to the lower side of the display panel, and the second conductive layer is away from the lower side of the display panel.

7. The display module according to claim 4, characterized in that, The second conductive layer is a copper foil conductive layer.

8. The display module according to claim 1, characterized in that, The substrate is a glass substrate.

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