CN-122024582-A - Display panel, manufacturing method thereof and display module

CN122024582ACN 122024582 ACN122024582 ACN 122024582ACN-122024582-A

Abstract

The application provides a display panel, a manufacturing method thereof and a display module, which are used for solving the problem of circuit breakage of a screen body in a bending area and improving the yield of the display panel. The display panel comprises a flexible screen body, a connecting medium layer, a reinforcing layer and a third layer, wherein the flexible screen body is provided with an arc-shaped part at the bending area, the connecting medium layer is attached to one side of the flexible screen body, the reinforcing layer is arranged on one side, far away from the flexible screen body, of the connecting medium layer, the orthographic projection of the reinforcing layer on the flexible screen body is positioned in the orthographic projection range of the connecting medium layer on the flexible screen body, the third layer is arranged on one side, far away from the connecting medium layer, of the reinforcing layer, and the reinforcing layer is filled.

Inventors

XIONG SHUIHU
ZHANG JUN

Assignees

昆山国显光电有限公司

Dates

Publication Date: 20260512
Application Date: 20251230

Claims (10)

1. A display panel having a first non-inflection region, an inflection region and a second non-inflection region, the inflection region connecting the first non-inflection region and the second non-inflection region, the display panel comprising: The flexible screen body is provided with an arc-shaped part at the bending area; the connecting medium layer is attached to one side of the flexible screen body; The reinforcing layer is arranged on one side, far away from the flexible screen body, of the connecting medium layer, and the orthographic projection of the reinforcing layer on the flexible screen body is positioned in the orthographic projection range of the connecting medium layer on the flexible screen body; And the third layer is arranged on one side of the reinforcing layer away from the connecting medium layer, and the reinforcing layer is filled with the third layer.
2. The display panel according to claim 1, wherein the material of the stiffening layer comprises a conductive material; Preferably, the conductive material comprises a metallic conductive material; preferably, the metallic conductive material includes at least one of copper, gold, and silver.
3. The display panel of claim 2, wherein the stiffening layer comprises a plurality of spaced apart stiffening bars; Preferably, the reinforcing strips are arranged at one side of the connecting medium layer at intervals along the arc extending direction of the bending region; Preferably, two adjacent reinforcing strips are arranged in parallel along the arc extending direction of the bending area; Preferably, the third layer fills gaps between adjacent ones of the reinforcing bars; Preferably, the third layer is in direct contact with the connection dielectric layer.
4. The display panel of claim 2, wherein the stiffening layer comprises a first surface and a second surface, the first surface and the second surface being oppositely disposed, at least one of the surfaces having a plurality of spaced grooves formed therein; Preferably, the plurality of spaced grooves are in an array arrangement; Preferably, when the bending area of the flexible screen body is in an unfolding state, the plurality of spaced grooves are arranged in a plurality of groove rows, and grooves in adjacent groove rows are arranged in a staggered manner; Preferably, the first surface and the second surface are both provided with grooves, the grooves arranged on the first surface are first grooves, the grooves arranged on the second surface are second grooves, and at least part of the first grooves and the second grooves are arranged in a staggered manner; preferably, the third layer fills the recess; Preferably, the third layer is in direct contact with the connection dielectric layer.
5. The display panel according to claim 1, wherein the thickness range of the stiffening layer comprises 5-30 μm.
6. The display panel of claim 1, wherein the third layer is the same as the connection dielectric layer; Preferably, the connection medium layer comprises optically transparent adhesive; preferably, the thickness range of the connecting medium layer comprises 1-20 mu m; Preferably, the thickness of the connecting medium layer is controlled to be 1/3 of the range of the thickness.
7. The display panel according to claim 2, wherein the second non-bending region is located on a backlight surface of the flexible screen body, the backlight surface includes a flexible circuit board, the flexible circuit board is provided with a ground layer, and the reinforcing layer extending to the second non-bending region along an arc-shaped extending direction of the bending region is electrically connected with the ground layer.
8. The display panel of claim 6, wherein the connecting dielectric layer is attached to at least the bending region; Preferably, the connecting medium layer also extends to at least one of the first non-bending region and the second non-bending region along the arc extending direction of the bending region; Preferably, the length range of the connecting medium layer attached to the first non-bending area and the second non-bending area along the arc extending direction of the bending area is at least 0.1mm; Preferably, the length of the connecting medium layer attached to the first non-bending area and the second non-bending area along the arc extending direction of the bending area is 0.15mm.
9. A manufacturing method of a display panel is characterized by comprising the steps that a pretreated flexible screen body is provided with a region to be bent, The connecting medium layer is arranged on one side of the to-be-bent area of the flexible screen body; the reinforcing layer is arranged on one side, far away from the flexible screen body, of the connecting medium layer, and is attached to one side of the flexible screen body through the connecting medium layer; the third layer fills the stiffening layer.
10. A display module comprising the display panel of any one of claims 1 to 8.

Description

Display panel, manufacturing method thereof and display module Technical Field The present application relates to the field of display, and in particular, to a display panel, a manufacturing method thereof, and a display module. Background OLED (Organic Light-Emitting Diode) has a series of advantages of self-luminescence, wide viewing angle, light weight, thinness, high brightness, low power consumption, quick response and the like, so that the OLED display panel becomes a very popular display device at home and abroad, and has wide application prospect. The flexible OLED display panel can bend the flexible screen body in the preparation and use processes. However, due to the limitations of the current folding materials, reinforcing technology and the like, after the folding with a small radius, the screen body circuit is easily broken, the problem of abnormal display occurs, and the product yield is reduced. Disclosure of Invention In view of this, the present application provides a display panel, a manufacturing method thereof, and a display module, so as to solve the problem of circuit breakage of a panel body in a bending region, and improve the yield of the display panel. In order to solve the technical problems, the first aspect of the application provides a display panel, which is provided with a first non-bending area, a bending area and a second non-bending area, wherein the bending area is connected with the first non-bending area and the second non-bending area, the display panel comprises a flexible screen body, a connecting medium layer, a reinforcing layer and a third layer, wherein the flexible screen body is provided with an arc-shaped part at the bending area, the connecting medium layer is attached to one side of the flexible screen body, the reinforcing layer is arranged at one side of the connecting medium layer far away from the flexible screen body, the orthographic projection of the reinforcing layer on the flexible screen body is positioned in the orthographic projection range of the connecting medium layer on the flexible screen body, the third layer is arranged at one side of the reinforcing layer far away from the connecting medium layer, and the reinforcing layer is filled with the third layer. According to an embodiment of the application, the material of the stiffening layer comprises a conductive material, preferably the conductive material comprises a metallic conductive material, preferably the metallic conductive material comprises at least one of copper, gold and silver. According to one embodiment of the application, the reinforcing layer comprises a plurality of reinforcing strips which are arranged at intervals, preferably the reinforcing strips are arranged at one side of the connecting medium layer at intervals along the arc-shaped extending direction of the bending area, preferably two adjacent reinforcing strips are arranged in parallel along the arc-shaped extending direction of the bending area, and a third layer fills gaps between the adjacent reinforcing strips and is directly contacted with the connecting medium layer. According to the application, the reinforcing layer comprises a first surface and a second surface, wherein the first surface and the second surface are oppositely arranged, a plurality of grooves with intervals are formed in at least one surface, the grooves with intervals are preferably arranged in an array mode, the grooves with intervals are preferably arranged in a plurality of groove rows when a bending area of the flexible screen body is in an unfolding state, the grooves in the adjacent groove rows are arranged in a staggered mode, the grooves arranged on the first surface are preferably arranged on the first surface and the second surface, the grooves arranged on the second surface are preferably arranged on the first surface and the second surface, at least part of the grooves are arranged in a staggered mode, the grooves are filled in a third layer, and the third layer is directly in contact with the connecting medium layer. According to an embodiment of the application, the thickness range of the stiffening layer comprises 5-30 μm. According to an embodiment of the application, the third layer may be the same as the connection medium layer, preferably the connection medium layer comprises an optically transparent adhesive, the thickness of the connection medium layer ranges from 1 μm to 20 μm, and preferably the thickness of the connection medium layer is controlled to be 1/3 of the thickness range. According to one embodiment of the present application, the second non-bending region is located on a backlight surface of the flexible screen body, the backlight surface includes a flexible circuit board, the flexible circuit board is provided with a ground layer, and the reinforcing layer extending to the second non-bending region along an arc extending direction of the bending region is electrically connected with the ground layer. Acc