CN-116249373-B - Display panel, preparation method thereof and display device

CN116249373BCN 116249373 BCN116249373 BCN 116249373BCN-116249373-B

Abstract

The embodiment of the invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a display area, an opening area and a transition area, wherein the display area surrounds the opening area, the transition area is positioned between the opening area and the display area, the opening area is provided with openings, the display panel comprises a substrate layer, a second inorganic layer, a luminescent layer, a first inorganic layer and a first enhancement layer which are sequentially arranged along the direction far away from the substrate layer, the luminescent layer is in contact with the first inorganic layer and the second inorganic layer, a plurality of first isolation structures are arranged on the first enhancement layer, and the first isolation structures are arranged at the positions, close to the opening area, of the transition area. When the edge of the opening is subjected to lateral impact force, the film layers with smaller binding force in the display panel can be preferentially separated, so that defects of GDS and GDSH caused by peeling at the position of the light-emitting layer are effectively avoided, the first isolation structure breaks to release stress, cracks are prevented from extending to the display area, and the occurrence of failure of the display panel due to impact on the edge of the opening is reduced.

Inventors

DENG ZHONGHUA
ZENG YANBO
ZHANG DIAN
SU BAOCHEN

Assignees

京东方科技集团股份有限公司
成都京东方光电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20230316

Claims (11)

1. A display panel, wherein the display panel has a display area, an open area, and a transition area; The display area surrounds the open area, and the transition area is positioned between the open area and the display area; The open pore area is provided with an open pore; the display panel comprises a substrate layer, and a second inorganic layer, a light-emitting layer, a first inorganic layer and a first reinforcing layer which are sequentially arranged along a direction far away from the substrate layer; The light-emitting layer is arranged in contact with the first inorganic layer and the second inorganic layer; The first enhancement layer is provided with a plurality of first isolation structures, and the first isolation structures are arranged at the positions of the transition areas close to the open pore areas, so that the binding force between the first enhancement layer and the film layer adjacent to the first enhancement layer is smaller than the binding force between the light-emitting layer and the first inorganic layer and the second inorganic layer; the substrate layer comprises a first substrate, a buffer layer and a second substrate which are sequentially arranged; One side of the second substrate far away from the buffer layer is in contact with the second inorganic layer; the buffer layer is provided with a plurality of second isolation structures which are formed into a second enhancement layer, and the second isolation structures are arranged at the positions of the transition area close to the open pore area; the spacing between the first isolation structure on the first enhancement layer and the opening is smaller than the spacing between the second isolation structure on the second enhancement layer and the opening; The display panel further comprises an isolation column, the isolation column is located in the transition area and surrounds the opening area, the light-emitting layer is disconnected at the isolation column, the isolation column is located at one side, far away from the opening area, of the second isolation structure, and the distance between the isolation column and the second isolation structure is larger than the distance between the opening and the second isolation structure.
2. The display panel of claim 1, wherein the plurality of first spacer structures are arranged around the open area in a single layer or in multiple layers; And under the condition that the plurality of first isolation structures are arranged in a multi-layer mode around the open hole area, the first isolation structures of different layers are arranged in a staggered mode.
3. The display panel of claim 1, further comprising a touch layer; The touch layer is arranged between the first inorganic layer and the first enhancement layer, and the touch layer is in contact with the first enhancement layer.
4. The display panel according to claim 3, wherein, The first isolation structures on the first enhancement layer comprise first through holes which are staggered at the position of the transition region close to the open pore region, or, The first isolation structures on the first enhancement layer comprise first protrusions which are staggered at positions of the transition region close to the open pore region.
5. The display panel of claim 4, wherein the display panel comprises, The touch layer is provided with a second bulge corresponding to the first bulge, and the first bulge is formed above the second bulge.
6. The display panel of claim 1, wherein the plurality of second isolation structures on the buffer layer comprise a plurality of second vias staggered in the transition region proximate the open area.
7. The display panel of claim 1, wherein the plurality of second spacer structures are disposed around the open area in a single layer or in multiple layers; And under the condition that the plurality of second isolation structures are arranged in a multi-layer mode around the open hole area, the second isolation structures of different layers are arranged in a staggered mode.
8. The display panel of claim 6, further comprising an organic layer, a polarizer, and a cover plate; the organic layer is arranged on one side of the first enhancement layer far away from the first substrate; The polaroid is arranged on one side of the organic layer away from the first substrate; the cover plate is arranged on one side of the polaroid away from the first substrate.
9. A method for manufacturing a display panel, characterized in that it is used for manufacturing the display panel according to any one of claims 1 to 8, comprising: Preparing a substrate layer; preparing a second inorganic layer on the substrate layer; Preparing a light emitting layer on the second inorganic layer; preparing a first inorganic layer on the light emitting layer; preparing a first reinforcing layer; The display panel is provided with a display area, an opening area and a transition area, wherein the display area surrounds the opening area, and the transition area is positioned between the opening area and the display area; the preparation of the substrate layer comprises the following steps: Preparing a first substrate; Preparing a buffer layer on a first substrate; preparing a second substrate on the buffer layer; the buffer layer is provided with a plurality of second isolation structures which are formed into a second enhancement layer and are arranged at the position of the transition area close to the open pore area; The distance from the first isolation structure to the open pore on the first enhancement layer is smaller than the distance from the second isolation structure to the open pore on the second enhancement layer; The display panel further comprises a spacer column, Before preparing the second inorganic layer on the substrate layer, further comprising: preparing isolation columns on the substrate layer; the isolation column is positioned in the transition area and surrounds the open pore area, the luminous layer is disconnected at the isolation column, the isolation column is positioned at one side of the second isolation structure far away from the open pore area, and the distance between the isolation column and the second isolation structure is larger than the distance between the open pore and the second isolation structure.
10. The method of manufacturing a display panel according to claim 9, wherein the manufacturing a first reinforcing layer includes: Preparing a first reinforced film layer by adopting a chemical vapor deposition method; Preparing a plurality of first through holes by adopting developing, exposing and etching processes, wherein the plurality of first through holes are arranged at the positions, close to the open pore areas, of the transition areas in a staggered manner to form a first enhancement layer; and/or, the display panel further comprises a touch control layer; the method further comprises, before preparing the first reinforcing layer: preparing a touch layer on the first inorganic layer; forming a plurality of second bulges on the touch control layer by adopting a patterning process, wherein the second bulges are arranged at the positions, close to the open pore region, of the transition region in a staggered manner; And preparing the first enhancement layer on the touch control layer by adopting a coating process, so that a plurality of first bulges corresponding to the second bulges are formed on the first enhancement layer, and the first bulges are formed above the second bulges.
11. A display device comprising the display panel of any one of claims 1-8.

Description

Display panel, preparation method thereof and display device Technical Field The invention relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device. Background In the whole assembly process of display devices such as mobile phones, holes are needed to be formed in a display area of an OLED display panel, a camera and a sensor can be placed in the Holes (HIAA), functional keys such as a flexible island can be arranged in a region corresponding to the HIAA, and the process and the operation easily cause the edges of the HIAA to be invalid due to impact force. For example, when the HIAA edge is subjected to a side impact force, the light emitting layer and the film layer adjacent thereto may be separated (peeling), thereby causing defects of GDSH (black spots at the edge of the hole) and GDS (black spots that may grow up) in the display panel. Therefore, how to reduce the occurrence of failure of the display panel due to impact on the edge of the opening is an urgent problem to be solved. Disclosure of Invention The embodiment of the invention aims to provide a display panel, a preparation method thereof and a display device, so as to reduce the occurrence of failure of the display panel due to impact on the edge of an opening. The specific technical scheme is as follows: An embodiment of the first aspect of the present application proposes a display panel having a display area, an aperture area and a transition area; The display area surrounds the open area, and the transition area is positioned between the open area and the display area; The open pore area is provided with an open pore; the display panel comprises a substrate layer, and a second inorganic layer, a light-emitting layer, a first inorganic layer and a first reinforcing layer which are sequentially arranged along a direction far away from the substrate layer; The light-emitting layer is arranged in contact with the first inorganic layer and the second inorganic layer; The first enhancement layer is provided with a plurality of first isolation structures, and the first isolation structures are arranged at the positions of the transition area close to the open pore area. In some embodiments of the application, the plurality of first isolation structures are arranged around the open area in a single layer or in multiple layers; And under the condition that the plurality of first isolation structures are arranged in a multi-layer mode around the open hole area, the first isolation structures of different layers are arranged in a staggered mode. In some embodiments of the present application, the display panel further includes a touch layer; The touch layer is arranged between the first inorganic layer and the first enhancement layer, and the touch layer is in contact with the first enhancement layer. In some embodiments of the application, the first isolation structures on the first enhancement layer comprise first vias staggered in the transition region near the open area, or, The first isolation structures on the first enhancement layer comprise first protrusions which are staggered at positions of the transition region close to the open pore region. In some embodiments of the present application, a second protrusion corresponding to the first protrusion is disposed on the touch layer, and the first protrusion is formed above the second protrusion. In some embodiments of the application, the substrate layer comprises a first substrate, a buffer layer and a second substrate which are sequentially arranged; One side of the second substrate far away from the buffer layer is in contact with the second inorganic layer; The buffer layer is provided with a plurality of second isolation structures which are formed into a second enhancement layer, and the second isolation structures are arranged at the positions of the transition area close to the open hole area. In some embodiments of the present application, the plurality of second isolation structures on the buffer layer include a plurality of second vias staggered in the transition region proximate to the open region. In some embodiments of the application, the plurality of second isolation structures are disposed around the open area in a single layer or in multiple layers; And under the condition that the plurality of second isolation structures are arranged in a multi-layer mode around the open hole area, the second isolation structures of different layers are arranged in a staggered mode. In some embodiments of the application, the first isolation structures on the first reinforcement layer have a smaller spacing to the openings than the second isolation structures on the second reinforcement layer; And/or the display panel further comprises an isolation column, wherein the isolation column is positioned in the transition area and surrounds the open pore area, the light-emitting layer is disconnected at the isolation column, the