CN-122003059-A - Display panel manufacturing method, display panel and display device

CN122003059ACN 122003059 ACN122003059 ACN 122003059ACN-122003059-A

Abstract

The display panel comprises an opening area, a display area located at the periphery of the opening area and an isolation area located between the opening area and the display area, wherein the display panel comprises a substrate, a plurality of isolation columns located at one side of the substrate, at least one isolation column in the plurality of isolation columns is a first isolation column, the first isolation column comprises a conductive isolation layer and a non-conductive isolation layer, the conductive isolation layer comprises a first surface facing away from the substrate, the non-conductive isolation layer is arranged on the first surface and located in a first area, close to the display area, of the first surface, the non-conductive isolation layer comprises a second surface facing away from the substrate and a third surface facing towards the opening area, a first recess is formed in the third surface, and a first electrode layer located at one side, facing away from the substrate, of the plurality of isolation columns comprises a first portion located on the second surface and a second portion located on the third surface, and the first recess breaks the first portion and the second portion.

Inventors

ZHANG YUNPENG
JING YANGZHONG
YANG JINGLI

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 (13)

1. A display panel having an open area, a display area located at a periphery of the open area, and an isolation area located between the open area and the display area, the display panel comprising: A substrate; A plurality of isolation posts on one side of the substrate, the isolation posts being disposed within the isolation region, at least one of the isolation posts being a first isolation post comprising a conductive isolation layer comprising a first surface facing away from the substrate and a non-conductive isolation layer disposed on the first surface in a first region of the first surface proximate to the display region, the non-conductive isolation layer comprising a second surface facing away from the substrate and a third surface facing toward the open region, the third surface having a first recess thereon, and And a first electrode layer positioned on one side of the isolation columns away from the substrate, wherein the first electrode layer comprises a first part positioned on the second surface and a second part positioned on the third surface, and the first recess breaks the first part and the second part.
2. The display panel of claim 1, wherein the non-conductive spacer layer comprises a first organic layer, a first inorganic layer, and a second organic layer stacked in this order in a direction away from the substrate, the first organic layer being recessed toward the third surface of the open area to form the first recess.
3. The display panel of claim 2, wherein the non-conductive spacer layer further comprises a second inorganic layer disposed between the conductive spacer layer and the first organic layer, the conductive spacer layer further comprising a fourth surface facing the open area, the fourth surface and a second area on the first surface outside the first area exposing the second inorganic layer.
4. A display panel according to claim 3, wherein the fourth surface has a second recess thereon, the first electrode layer further comprising a third portion located in the second region and a fourth portion located between two adjacent spacers, the third portion and the second portion being in communication, the second recess separating the third portion and the fourth portion.
5. The display panel of claim 4, wherein the conductive spacer layer comprises a first metal layer, a second metal layer, and a third metal layer stacked in this order, the second metal layer being recessed toward a fourth surface of the open area to form the second recess.
6. The display panel according to claim 3, wherein the display region includes an active layer, an interlayer dielectric layer covering the active layer, a first gate electrode formed on the interlayer dielectric layer, a first gate electrode insulating layer covering the first gate electrode, a second gate electrode formed on the first gate electrode insulating layer, a second gate electrode insulating layer covering the second gate electrode, a first source drain metal layer formed on the second gate insulating layer, a first passivation layer covering the first source drain metal layer, a first planarization layer covering the first passivation layer, a second source drain metal layer formed on the first planarization layer, a second passivation layer formed on the first planarization layer, a second planarization layer covering the second passivation layer and the second source drain metal layer, a first organic layer and the first planarization layer are provided in the same layer, a first inorganic layer and the second passivation layer are provided in the same layer, a second organic layer and the second passivation layer and the first conductive layer are provided in the same layer, and the first inorganic layer and the second passivation layer and the first conductive layer are provided in the same layer.
7. The display panel of claim 6, further comprising a sixth film layer disposed between the spacer posts and the substrate, an orthographic projection of the sixth film layer onto the substrate covering at least an orthographic projection of the first spacer posts onto the substrate.
8. The display panel of claim 7, wherein the sixth film layer comprises a first sub-film layer and/or a second sub-film layer, the first sub-film layer being co-layer with the first gate electrode, the second sub-film layer being co-layer with the second gate electrode.
9. The display panel of claim 7, further comprising at least one isolation dam on a side of the substrate, the isolation dam disposed in the isolation region, the isolation dam comprising a first isolation layer disposed in-layer with the first planarization layer and a second isolation layer disposed in-layer with the second planarization layer.
10. A display device comprising the display panel according to any one of claims 1 to 9.
11. A method for manufacturing a display panel, wherein the display panel has an open area, a display area located at the periphery of the open area, and an isolation area located between the open area and the display area, the method comprising the steps of: Providing a substrate; Forming a plurality of isolation columns in an isolation region at one side of the substrate, wherein the isolation columns are distributed in the isolation region, at least one isolation column in the isolation columns is a first isolation column, the first isolation column comprises a conductive isolation layer and a non-conductive isolation layer, the conductive isolation layer comprises a first surface facing away from the substrate, the non-conductive isolation layer is arranged on the first surface and is positioned in a first area, close to the display region, of the first surface, the non-conductive isolation layer comprises a second surface facing away from the substrate and a third surface facing towards the open hole region, and the third surface is provided with a first recess; And forming a first electrode layer on one side of the isolation column, which is away from the substrate, wherein the first electrode layer comprises a first part positioned on the second surface and a second part positioned on the third surface, and the first recess breaks the first part and the second part.
12. The method of manufacturing a display panel according to claim 11, further comprising forming a driving circuit layer in the display region on the substrate side, the manufacturing process of the driving circuit layer comprising: Forming an active layer on the substrate; forming an interlayer dielectric layer covering the active layer; Forming a first gate electrode on the interlayer dielectric layer; forming a first gate insulating layer covering the first gate electrode; Forming a second gate electrode on the first gate insulating layer; forming a second gate insulating layer covering the second gate electrode; Forming a first source-drain metal layer on the second gate insulating layer, wherein the first source-drain metal layer comprises a first source electrode and a first drain electrode; forming a first passivation layer covering the first source electrode and the first drain electrode; forming a first planarization layer covering the first passivation layer; forming a second source drain metal layer on the first planarization layer; forming a second passivation layer on the first planarization layer; and forming a second planarization layer covering the second passivation layer and the second source drain metal layer.
13. The method of manufacturing a display panel according to claim 12, wherein the non-conductive spacer layer includes a first organic layer, a first inorganic layer, and a second organic layer sequentially stacked in a direction away from the substrate, the first organic layer being recessed toward a third surface of the opening region to form the first recess, the first spacer column further including a second inorganic layer disposed between the conductive spacer layer and the first organic layer, the conductive spacer layer further including a fourth surface facing the opening region, the fourth surface and a second region on the first surface outside the first region exposing the second inorganic layer, the fourth surface having a second recess thereon, the first electrode layer further including a third portion located in the second region and a fourth portion located between two adjacent spacer columns, the third portion and the second portion being in communication, the second recess disconnecting the third portion and the fourth portion; The step of forming a plurality of isolation pillars in the isolation region on one side of the substrate comprises: Forming the conductive isolation layer in the preparation process of the first source-drain metal layer; Forming the second inorganic layer in the preparation process of the first passivation layer, wherein the second inorganic layer covers the conductive isolation layer; Forming a first organic layer in a process of preparing the first planarization layer; Forming the first inorganic layer in a process of preparing the second passivation layer; forming the second organic layer in a process of preparing the second planarization layer; etching the second inorganic layer through a dry etching process to enable a first area on the first surface of the conductive isolation layer and a fourth surface facing the open hole area to expose the second inorganic layer, and enabling the first organic layer to be concave inwards towards the third surface of the open hole area to form the first concave; And etching the fourth surface of the conductive isolation layer facing the open hole area through a wet etching process to form the second recess.

Description

Display panel manufacturing method, display panel and display device Technical Field The present disclosure relates to the field of display technology. And more particularly, to a method for manufacturing a display panel, and a display device. Background With the continuous development of display technology, the design of an under-screen camera has become a mainstream trend of the screen design of electronic devices such as smart phones, tablet computers and the like. The under-screen camera technology is characterized in that a camera opening (AA Hole) is formed below the screen, so that the camera can realize hidden shooting on the premise of not damaging the integrity of the screen, and the appearance attractiveness and the user experience of the equipment are greatly improved. In an OLED display, an OLED light emitting device is generally encapsulated by an encapsulation layer to isolate the OLED light emitting device from water and oxygen. However, after the camera is provided with the hole on the OLED display screen, water vapor in the external environment is very easy to electrolyze under the action of the charged cathode near the hole, so that the packaging effect of the packaging layer is influenced, and the reliability of the display screen is reduced. Disclosure of Invention The disclosure aims to provide a manufacturing method of a display panel, the display panel and a display device, so as to solve the technical problem that in the related art, a cathode near a camera opening is electrified to cause packaging failure and influence packaging effect. In order to achieve the above purpose, the present disclosure adopts the following technical scheme: A first aspect of the present disclosure provides a display panel having an open area, a display area located at a periphery of the open area, and an isolation area located between the open area and the display area, the display panel comprising: A substrate; A plurality of isolation posts on one side of the substrate, the isolation posts being disposed within the isolation region, at least one of the isolation posts being a first isolation post comprising a conductive isolation layer comprising a first surface facing away from the substrate and a non-conductive isolation layer disposed on the first surface in a first region of the first surface proximate to the display region, the non-conductive isolation layer comprising a second surface facing away from the substrate and a third surface facing toward the open region, the third surface having a first recess thereon, and And a first electrode layer positioned on one side of the isolation columns away from the substrate, wherein the first electrode layer comprises a first part positioned on the second surface and a second part positioned on the third surface, and the first recess breaks the first part and the second part. Optionally, the non-conductive isolation layer includes a first organic layer, a first inorganic layer and a second organic layer that are sequentially stacked along a direction away from the substrate, and the first organic layer is concave towards the third surface of the open hole region to form the first recess. Optionally, the non-conductive isolation layer further includes a second inorganic layer disposed between the conductive isolation layer and the first organic layer, and the conductive isolation layer further includes a fourth surface facing the open area, and the second inorganic layer is exposed on the fourth surface and a second area outside the first area on the first surface. Optionally, the fourth surface has a second recess thereon, and the first electrode layer further includes a third portion located in the second region and a fourth portion located between two adjacent isolation pillars, the third portion and the second portion being in communication, and the second recess disconnecting the third portion and the fourth portion. Optionally, the conductive isolation layer includes a first metal layer, a second metal layer and a third metal layer that are sequentially stacked, and the second metal layer is concave towards the fourth surface of the open hole area to form the second recess. Optionally, the display area includes an active layer, an interlayer dielectric layer covering the active layer, a first gate electrode formed on the interlayer dielectric layer, a first gate electrode insulating layer covering the first gate electrode, a second gate electrode formed on the first gate electrode insulating layer, a second gate electrode insulating layer covering the second gate electrode, a first source drain metal layer formed on the second gate electrode insulating layer, a first passivation layer covering the first source drain metal layer, a first planarization layer covering the first passivation layer, a second source drain metal layer formed on the first planarization layer, a second passivation layer formed on the first planarization layer, a second planar