CN-113937143-B - Display module

CN113937143BCN 113937143 BCN113937143 BCN 113937143BCN-113937143-B

Abstract

The invention provides a display module, which comprises a cover plate, a display panel and an electrostatic discharge structure, wherein the cover plate comprises a substrate, the substrate comprises a first surface and a second surface which are opposite, the display panel is arranged close to the second surface, the electrostatic discharge structure is used for establishing a discharge channel for electrostatic charges generated on the cover plate, the electrostatic discharge structure comprises a first conductive layer which is formed on the first surface, and/or the electrostatic discharge structure comprises a second conductive layer which is positioned on one side, away from the second surface, of the display panel, and the second conductive layer is attached to part of the peripheral area of the second surface. The first conductive layer provides a first static discharge channel and/or the second conductive layer provides a second static discharge channel, static electricity on the surface of the cover plate is discharged, and the problem that the display panel is poor in display due to the fact that the static electricity on the surface of the cover plate flows into the supporting layer on the lower side of the display panel is avoided.

Inventors

ZHANG SONG
ZHANG ZHIDAN
LIU LEI
LIU XIN

Assignees

昆山国显光电有限公司

Dates

Publication Date: 20260505
Application Date: 20211014

Claims (8)

1. A display module, characterized in that the display module comprises: A cover plate comprising a substrate including opposing first and second surfaces; The display panel is arranged close to the second surface, is a flexible OLED display panel, comprises a flexible substrate, a buffer layer and a thin film transistor structure from bottom to top, a support layer is arranged on the lower side of the flexible substrate and comprises a low-resistance conductive coating, and An electrostatic discharge structure for establishing a discharge path for electrostatic charges generated on the cover plate; the first conductive layer provides a first static discharge channel, and the first static discharge channel is that static charges on the surface of the cover plate flow into the first conductive layer and then are discharged through air; The cover plate further comprises an anti-fingerprint coating, the anti-fingerprint coating is formed on the surface, far away from one side of the substrate, of the first conductive layer, the first conductive layer is clamped between the substrate and the anti-fingerprint coating, the anti-fingerprint coating comprises fluoride, the first conductive layer is made of transparent conductive materials containing oxygen elements, and the fluorine elements and the oxygen elements are combined to form stable chemical bonds, so that the anti-fingerprint coating is stably attached to the first conductive layer.
2. The display module of claim 1, wherein the first conductive layer is a transparent conductive layer that covers the first surface entirely.
3. The display module of claim 2, wherein the transparent conductive layer comprises a titanium dioxide transparent conductive layer or an aluminum oxide transparent conductive layer.
4. The display module of claim 1, wherein the static electricity discharge structure comprises a second conductive layer, the second conductive layer is located at one side of the display panel away from the second surface, and the second conductive layer is attached to a part of a peripheral area of the second surface; the second conductive layer provides a second static discharge channel so that static charges on the surface of the cover plate flow into the second conductive layer and are electrically connected with a conductor on a middle frame of the display module through the second conductive layer to be grounded and discharged; And a lug extends out of the edge of the second conductive layer, and the lug is attached to part of the peripheral area of the second surface.
5. The display module assembly of claim 4, wherein the peripheral region is provided with a light shielding layer, and the ledge is attached to the light shielding layer.
6. The display module assembly of claim 4, further comprising a composite tape comprising a foam layer, an adhesive layer, and an isolation layer in a stacked arrangement, wherein the second conductive layer is formed on a side of the isolation layer away from the foam layer, wherein the foam layer is adjacent to a 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 of claim 4, wherein the second conductive layer is a copper foil conductive layer.
8. The display module of claim 1, wherein the substrate is a glass substrate.

Description

Display module Technical Field The invention relates to the technical field of display, in particular to a display module. Background An Organic Light-Emitting Diode (OLED) is a current-type Organic Light-Emitting device that emits Light by injection and recombination of carriers, and the Light-Emitting intensity is proportional to the injected current. Because the OLED is easy to manufacture, only needs low driving voltage, and is lighter and thinner than the LCD, high in brightness, low in power consumption, quick in response, high in definition and good in flexibility, the OLED is very outstanding in meeting the application of flat-panel and curved-surface displays. In the process of manufacturing the OLED display device, if the electrostatic protection process is not performed, electrostatic charge accumulation occurs during the process of performing an electrostatic test on the OLED display device and during the process of using the OLED display device by a consumer, and if the accumulated electrostatic charge cannot be released, electrostatic breakdown may occur. The electrostatic breakdown may cause abnormal pixel circuits on the array substrate in the display device, and when severe, the pixel circuits on the array substrate may be shorted, so that the array substrate may not work normally. In the existing OLED display device, conductive liquid is coated on the edge of a display panel, so that a conductive layer formed by curing the conductive liquid is electrically connected with a copper foil layer of the composite adhesive tape and an ink layer on the periphery of a cover plate to form an electrostatic discharge channel, and electrostatic discharge on the surface of the cover plate is facilitated. Because the conductive liquid coating process is complex in operation and low in reliability, an effective static discharge channel cannot be formed between the copper foil layer and the cover plate, static on the surface of the cover plate cannot be discharged, and damage to the display panel is easily caused. In view of this, there is a need to provide a new display module having a stable electrostatic channel, which can timely discharge static electricity and prevent the display panel from being damaged by static electricity. Disclosure of Invention The invention aims to provide a display module, wherein an electrostatic discharge structure is arranged on at least one side surface of a cover plate, so that static electricity on the surface of the cover plate is eliminated in time, and the problem of damage to an array substrate caused when net charge accumulation on the surface of the cover plate is transferred to a low-resistance coating of a supporting layer on the lower side of a display panel is avoided. In order to solve the problems, the technical scheme of the invention provides a display module, which comprises a cover plate, a display panel and an electrostatic discharge structure, wherein the cover plate comprises a substrate, the substrate comprises a first surface and a second surface which are opposite, the display panel is arranged close to the second surface, the electrostatic discharge structure is used for establishing a discharge channel for electrostatic charges generated on the cover plate, the electrostatic discharge structure comprises a first conductive layer, the first conductive layer is formed on the first surface, and/or the electrostatic discharge structure comprises a second conductive layer, the second conductive layer is positioned on one side, away from the second surface, of the display panel, and the second conductive layer is attached to a part of peripheral area of the second surface. As an optional technical scheme, the first conductive layer is a transparent conductive layer covered on the first surface entirely. Alternatively, the transparent conductive layer includes a titanium dioxide transparent conductive layer or an aluminum oxide transparent conductive layer. As an optional technical solution, the cover plate further includes an anti-fingerprint plating layer, and the anti-fingerprint plating layer is formed on a surface of the first conductive layer far away from the substrate. As an alternative technical solution, a lug extends from the edge of the second conductive layer, and the lug is attached to a part of the peripheral area of the second surface. As an optional technical scheme, the peripheral area is provided with a shading layer, and the lug is attached to the shading layer. As an optional technical scheme, still include compound sticky tape, compound sticky tape is including the cotton layer of bubble, gluing layer and the isolation layer of range upon range of setting, the second conducting layer form in the isolation layer is kept away from the cotton layer of bubble one side, wherein, the cotton layer of bubble is close to display panel's downside, the second conducting layer is kept away from display panel's downside. As an optional technical