CN-122003058-A - Display panel, preparation method thereof and display device

CN122003058ACN 122003058 ACN122003058 ACN 122003058ACN-122003058-A

Abstract

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, an inorganic insulating layer, a first groove, a conductive isolation structure, an organic material layer, a first electrode, an organic material layer and a raising part, wherein the inorganic insulating layer is positioned on one side of the substrate, the first groove is formed in one side of the inorganic insulating layer, which is far away from the substrate, the first groove is positioned in a peripheral area, the conductive isolation structure is positioned on one side of the inorganic insulating layer, which is far away from the substrate, the region is positioned outside the first groove, the organic material layer is positioned on one side of the conductive isolation structure, which is far away from the substrate, the organic material layer and the first electrode extend from the display area to the peripheral area, the conductive isolation structure comprises a body part and the raising part, the body part and the raising part are connected into a whole, the orthographic projection of the body part and the first groove on the substrate is not overlapped, the raising part and the orthographic projection of the first groove on the substrate are overlapped at least partially, the raising part is raised towards the direction far away from the inorganic insulating layer relative to the body part, and the organic material layer and the first electrode are disconnected at the position of the raising part respectively.

Inventors

LI XUEPING
SHI JIKAI
XIN YANXIA
HUANG LIWEI
WU YIHAO
WANG XIAOYUN
LI HAIBO
ZHAO YU
ZHANG FENG
ZHOU YUZHU

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: 20241105

Claims (15)

1. A display panel comprises a display region, an opening region and a peripheral region, wherein the peripheral region is arranged around the periphery of the opening region, the display region surrounds the peripheral region, The display panel includes a substrate having a first surface, An inorganic insulating layer positioned on one side of the substrate, The substrate and the inorganic insulating layer extend from the display region to the peripheral region, respectively; A first groove is formed in one side of the inorganic insulating layer, which is away from the substrate, and is positioned in the peripheral area, A conductive isolation structure positioned at one side of the inorganic insulating layer away from the substrate and at an area outside the first groove in the peripheral area, An organic material layer positioned on one side of the conductive isolation structure away from the substrate, A first electrode located on a side of the organic material layer facing away from the substrate, The organic material layer and the first electrode extend from the display region to the peripheral region respectively, The conductive isolation structure is characterized by comprising a body part and a raising part, wherein the body part and the raising part are connected into a whole, the orthographic projection of the body part and the first groove on the substrate is not overlapped, and the orthographic projection of the raising part and the first groove on the substrate is at least partially overlapped; the tilted part is tilted away from the inorganic insulating layer relative to the body part, The organic material layer and the first electrode are disconnected at the positions of the tilted portions, respectively.
2. The display panel of claim 1, further comprising a flat portion located in the first recess on a side of the inorganic insulating layer facing away from the substrate and on a side of the conductive isolation structure adjacent to the substrate, A second groove is formed on one side of the flat part, which is away from the substrate, The orthographic projection of the tilted part on the substrate is positioned in the orthographic projection area of the second groove on the substrate.
3. The display panel according to claim 1, wherein the tilted portion forms an acute included angle with the body portion, The angle range of the acute included angle is 30-45 degrees.
4. The display panel of claim 2, wherein a width of an orthographic projection overlapping region of the raised portion and the second groove on the substrate in a direction away from the opening region is smaller than an opening width of the first groove.
5. The display panel according to claim 4, wherein a width of an orthographic projection overlapping area of the raised portion and the second groove on the substrate ranges from 0.7 μm to 1 μm.
6. The display panel according to claim 2, further comprising a conductive layer located at the peripheral region and located at a side of the inorganic insulating layer remote from the substrate and a side of the flat portion close to the substrate, The conductive layer covers the side wall of the first groove, which is close to the conductive isolation structure; or the conductive layer also covers the area of the inorganic insulating layer overlapping the conductive isolation structure; Or the conductive layer also covers the bottom of the first groove.
7. The display panel of claim 6, further comprising a first inorganic encapsulation layer, an organic filler, and a second inorganic encapsulation layer, The first inorganic encapsulation layer, the organic filling part and the second inorganic encapsulation layer are sequentially stacked on one side of the first electrode, which is away from the substrate, The first inorganic encapsulation layer and the second inorganic encapsulation layer extend from the display region to the peripheral region respectively, The shape of the first inorganic packaging layer at the positions of the raising part and the second groove is matched with the shape of the raising part and the second groove, The organic filling part is positioned between the raising part and the second groove, the orthographic projection of the organic filling part on the substrate is positioned in the orthographic projection overlapping area of the raising part and the second groove on the substrate, The shapes of the second inorganic packaging layer at the positions of the raising part and the second groove are matched with the shapes of the first inorganic packaging layer and the organic filling part at the positions.
8. The display panel of claim 7, wherein the number of the first grooves is plural, the plural first grooves are sequentially spaced apart in a direction away from the opening area, The number of conductive isolation structures is a plurality, At least part of the conductive isolation structures are positioned in the interval area between two adjacent first grooves in a one-to-one correspondence manner; and at least two first grooves are arranged between two adjacent conductive isolation structures.
9. The display panel of claim 8, wherein a side of the first recess closest to the display area adjacent to the display area is further provided with one of the conductive isolation structures, And/or one side of the first groove closest to the open hole area, which is close to the open hole area, is also provided with one conductive isolation structure.
10. The display panel according to claim 8, wherein the conductive isolation structure comprises two raised portions, the two raised portions are respectively disposed on two opposite sides of the body portion along a direction away from the opening area, and the two raised portions correspond to two adjacent first groove positions respectively.
11. The display panel of claim 9, wherein the conductive isolation structure between the display area and the first recess closest to the display area includes one of the raised portions corresponding to the first recess closest to the display area; The conductive isolation structure between the open area and the first groove closest to the open area comprises one raised portion, and the raised portion corresponds to the first groove closest to the open area.
12. The display panel according to claim 8, wherein an opening width of the first groove in a direction away from the opening area ranges from 6 μm to 12 μm; The depth range of the first groove is 8500-9500 angstroms; the distance between the adjacent side walls of two adjacent first grooves is 8-10 mu m.
13. A display device comprising the display panel of any one of claims 1-12.
14. A method for preparing display panel, the display panel has display area, open pore area and peripheral area, the peripheral area is set around the open pore area, the display area surrounds the peripheral area, The preparation method comprises sequentially preparing patterns of inorganic insulating layer, conductive isolation structure, organic material layer and first electrode on one side of substrate, The substrate, the inorganic insulating layer, the organic material layer and the first electrode extend from the display region to the peripheral region, respectively, A first groove is formed in one side of the inorganic insulating layer, which is away from the substrate, and is positioned in the peripheral area, The conductive isolation structure is positioned in the peripheral area outside the first groove; it is characterized in that the pattern for preparing the conductive isolation structure comprises the pattern for preparing a body part and a warping part, The body part and the raising part are connected into a whole, the orthographic projection of the body part and the first groove on the substrate is not overlapped, The raising part at least partially overlaps with the orthographic projection of the first groove on the substrate; The tilting part tilts relative to the body part in a direction away from the inorganic insulating layer; The organic material layer and the first electrode are disconnected at the positions of the tilted portions, respectively.
15. The method for manufacturing a display panel according to claim 14, wherein the number of the first grooves is plural, and the plural first grooves are sequentially spaced apart from the opening area; the preparation method further comprises sequentially preparing patterns of the conductive layer and the flat part by adopting a composition process after the preparation of the inorganic insulating layer is completed and before the preparation of the conductive isolation structure; the conductive layer covers the side wall of the first groove, which is close to the conductive isolation structure, the groove bottom of the first groove and the area of the inorganic insulating layer, which is overlapped with the conductive isolation structure; preparing the pattern of the flat portion and the conductive isolation structure includes: preparing a pattern of an intermediate structure of the flat portion on the substrate on which the preparation of the conductive layer is completed by adopting a patterning process; the middle structure of the flat part is positioned in the first groove, a cambered surface protruding towards one side away from the substrate is formed on one side surface of the middle structure of the flat part facing away from the substrate, the distance between the cambered surface and the substrate is larger than the distance between the one side surface of the first part facing away from the substrate and the substrate, and at least part of the first part is not overlapped with the orthographic projection of the middle structure of the flat part on the substrate; The first part is a part of the conductive layer covering an overlapping area of the inorganic insulating layer and the conductive isolation structure, and the orthographic projection of the first part and the first groove on the substrate is not overlapped; Preparing patterns of the body part and the raising part on the substrate prepared by the intermediate structure of the flat part by adopting a patterning process; The body portion overlaps with an orthographic projection of the first portion on the substrate, and the raised portion overlaps with an orthographic projection of an intermediate structure of the flat portion on the substrate; Preparing a pattern of the second flat part by adopting a patterning process; the second flat part covers the body part and the raising part, and the second flat part partially overlaps with an intermediate structure of the flat part; preparing a pattern of the second electrode by adopting a patterning process; The second electrode is positioned in the display area; removing the second flat part by adopting an exposure process, and simultaneously forming patterns of the flat part and the second groove therein; The flat part is positioned in the first groove, and the orthographic projection of the tilting part on the substrate is positioned in the orthographic projection area of the second groove on the substrate.

Description

Display panel, preparation method thereof and display device Technical Field The invention belongs to the field of display, and particularly relates to a display panel, a preparation method thereof and a display device. Background An OLED (Organic Light-Emitting Diode) display screen receives a lot of attention because of its advantages of self-luminescence, low power consumption, light and thin, flexibility, gorgeous color, high contrast, and fast response speed. Disclosure of Invention The invention provides a display panel, a preparation method thereof and a display device. The invention provides a display panel, which is provided with a display area, an opening area and a peripheral area, wherein the peripheral area is arranged around the periphery of the opening area, the display area surrounds the peripheral area, The display panel includes a substrate having a first surface, An inorganic insulating layer positioned on one side of the substrate, The substrate and the inorganic insulating layer extend from the display region to the peripheral region, respectively; A first groove is formed in one side of the inorganic insulating layer, which is away from the substrate, and is positioned in the peripheral area, A conductive isolation structure positioned at one side of the inorganic insulating layer away from the substrate and at an area outside the first groove in the peripheral area, An organic material layer positioned on one side of the conductive isolation structure away from the substrate, A first electrode located on a side of the organic material layer facing away from the substrate, The organic material layer and the first electrode extend from the display region to the peripheral region respectively, The conductive isolation structure comprises a body part and a raising part, the body part and the raising part are connected into a whole, the orthographic projection of the body part and the first groove on the substrate is not overlapped, and the orthographic projection of the raising part and the first groove on the substrate is at least partially overlapped; the tilted part is tilted away from the inorganic insulating layer relative to the body part, The organic material layer and the first electrode are disconnected at the positions of the tilted portions, respectively. In some embodiments, further comprising a flat portion located on a side of the inorganic insulating layer facing away from the substrate and a side of the conductive isolation structure adjacent to the substrate, and located in the first recess, A second groove is formed on one side of the flat part, which is away from the substrate, The orthographic projection of the tilted part on the substrate is positioned in the orthographic projection area of the second groove on the substrate. In some embodiments, the raised portion forms an acute included angle with the body portion, The angle range of the acute included angle is 30-45 degrees. In some embodiments, a width of an orthographic projection overlapping region of the raised portion and the second groove on the substrate is smaller than an opening width of the first groove in a direction away from the opening region. In some embodiments, a width of an orthographic projection overlapping area of the raised portion and the second groove on the substrate ranges from 0.7 μm to 1 μm. In some embodiments, a conductive layer is further included at the peripheral region and at a side of the inorganic insulating layer remote from the substrate and a side of the flat portion proximate to the substrate, The conductive layer covers the side wall of the first groove, which is close to the conductive isolation structure; or the conductive layer also covers the area of the inorganic insulating layer overlapping the conductive isolation structure; Or the conductive layer also covers the bottom of the first groove. In some embodiments, a first inorganic encapsulation layer, an organic filler, and a second inorganic encapsulation layer are also included, The first inorganic encapsulation layer, the organic filling part and the second inorganic encapsulation layer are sequentially stacked on one side of the first electrode, which is away from the substrate, The first inorganic encapsulation layer and the second inorganic encapsulation layer extend from the display region to the peripheral region respectively, The shape of the first inorganic packaging layer at the positions of the raising part and the second groove is matched with the shape of the raising part and the second groove, The organic filling part is positioned between the raising part and the second groove, the orthographic projection of the organic filling part on the substrate is positioned in the orthographic projection overlapping area of the raising part and the second groove on the substrate, The shapes of the second inorganic packaging layer at the positions of the raising part and the second groove are matched with the shape