WO-2026091857-A1 - DISPLAY PANEL AND DISPLAY DEVICE

WO2026091857A1WO 2026091857 A1WO2026091857 A1WO 2026091857A1WO-2026091857-A1

Abstract

The present application relates to a display panel and a display device. The display panel comprises a display area and a non-display area. The non-display area comprises an opening and an isolation area, the isolation area is located between the opening and the display area, and the isolation region surrounds at least a portion of the opening. The display panel comprises a substrate layer, a planarization layer is provided on the substrate layer in the display area, the planarization layer has a first isolation structure on the substrate layer in the isolation area, and the first isolation structure comprises a main top surface and a main bottom surface opposite to each other in the direction perpendicular to the plane where the display panel is located, and a main side surface connecting the main top surface and the main bottom surface. The isolation area further comprises a strengthening structure, and the strengthening structure is in contact with at least a portion of the side surface of the first isolation structure, and is in contact with the substrate layer. In the present application, by providing the strengthening structure in the isolation area, the first isolation structure in the isolation area is optimized, so as to improve the bonding force between film layers in the isolation area of the display panel, reduce peeling between the film layers, and thereby effectively enhance the stability and reliability of a display surface.

Inventors

WANG, TAO

Assignees

京东方科技集团股份有限公司

Dates

Publication Date: 20260507
Application Date: 20250903
Priority Date: 20241031

Claims (20)

A display panel, characterized in that, It includes a display area and a non-display area, the non-display area including an opening and a partition area, the partition area being located between the opening and the display area, and the partition area surrounding at least a portion of the opening; The display panel includes a planarization layer in the display area, and the planarization layer has a first partition structure in the partition area. The first partition structure includes a main top surface and a main bottom surface opposite each other in a direction perpendicular to the plane of the display panel, and a main side surface connecting the main top surface and the main bottom surface. The display panel includes a substrate layer in the partition area, the first partition structure is formed on the substrate layer, and a reinforcing structure is also provided on the substrate layer. The reinforcing structure is at least partially in contact with at least a portion of the side of the first partition structure and in contact with the substrate layer.
According to claim 1, the display panel is characterized in that the first partition structure includes a first partition part and a second partition part, and the first partition part and the second partition part are arranged sequentially along a direction perpendicular to the plane of the display panel. The first partition includes a first bottom surface and a first top surface opposite each other in a direction perpendicular to the plane of the display panel, and a first side surface connecting the first top surface and the first bottom surface. The second partition includes a second bottom surface and a second top surface opposite each other in a direction perpendicular to the plane of the display panel, and a second side surface connecting the second top surface and the second bottom surface. The first top surface and the second bottom surface are in at least partial contact.
According to claim 2, the display panel is characterized in that the second partition portion is located on the first top surface, and the area of the second bottom surface of the second partition portion is smaller than the area of the first top surface.
According to claim 2, the display panel is characterized in that the area of the second bottom surface of the second partition portion is larger than the area of the first bottom surface of the first partition portion, and the second bottom surface of the second partition portion completely covers the first side surface of the first partition portion.
The display panel according to any one of claims 1-4, wherein the reinforcing structure includes an auxiliary fixing layer, the auxiliary fixing layer covering the substrate layer of the outer peripheral portion of the main bottom surface of the first partition structure to at least a portion of the main side surface of the first partition structure.
The display panel according to claim 5 is characterized in that the display panel further includes an anode layer, and the anode layer and the planarization layer are stacked sequentially along a direction perpendicular to the plane of the display panel; When the second partition is located on the first top surface, and the area of the second bottom surface of the second partition is smaller than that of the first top surface, the anode layer forms the auxiliary fixing layer in the partition area, and the auxiliary fixing layer covers the first side surface of the first partition and the blank part on the first top surface of the first partition that is not covered by the second bottom surface.
According to claim 5, the display panel is characterized in that the auxiliary fixing layer covers the substrate layer, the main side surface, and the main top surface of the outer periphery of the main bottom surface of the first partition structure.
According to claim 7, the display panel is characterized in that a plurality of vent holes are provided on the auxiliary fixing layer located on the main top surface, and the vent holes are spaced apart on the auxiliary fixing layer.
The display panel according to any one of claims 1-4, characterized in that the reinforcing structure further includes a plurality of auxiliary fixing portions, wherein the cross-sectional dimensions of the auxiliary fixing portions gradually increase along the direction away from the substrate layer; or The cross-sectional dimensions of the auxiliary fixing part first decrease and then increase along the direction away from the substrate layer.
According to claim 9, the display panel is characterized in that the width of the auxiliary fixing part is less than one-quarter of the width of the first partition structure.
According to claim 9, the display panel is characterized in that, when the second partition portion is located on the first top surface and the area of the second bottom surface of the second partition portion is smaller than that of the first top surface, the auxiliary fixing portion is located between the first partition portion and the substrate layer, and/or The auxiliary fixing part is located between the first partition part and the second partition part.
The display panel according to claim 11 is characterized in that, when the auxiliary fixing part is located between the first partition part and the substrate layer, the first bottom surface of the first partition part at least partially covers at least part of the top surface of the auxiliary fixing part; When the auxiliary fixing part is located between the first partition part and the second partition part, the second bottom surface of the second partition part at least partially covers the at least partial top surface of the auxiliary fixing part.
According to claim 9, the display panel is characterized in that, when the area of the second bottom surface of the second partition portion is greater than the area of the first bottom surface of the first partition portion, and the second bottom surface of the second partition portion completely covers the first side surface of the first partition portion, the auxiliary fixing portion is located on both sides of the first partition portion, and the second bottom surface of the second partition portion at least partially covers at least part of the top surface of the auxiliary fixing portion.
The display panel according to claim 13 is characterized in that the first bottom surface of the first partition portion at least partially covers at least a portion of the top surface of the auxiliary fixing portion.
According to claim 1, the display panel is characterized in that the partition area further includes a second partition structure, the second partition structure including a third partition portion and a fourth partition portion; wherein, The third partition is located between the display area and the first partition structure, and the fourth partition is located between the first partition structure and the opening.
According to claim 15, the display panel further includes a circuit layer, an anode layer, and a light-emitting layer in the display area, wherein the substrate layer, the circuit layer, the anode layer, the planarization layer, and the light-emitting layer in the display area are sequentially stacked; wherein, The light-emitting layer is naturally cut into a first part and a second part by the first partition structure and the second partition structure within the partition area. The first part is located on the surface of the first partition structure and the second partition structure, and the second part is located on the surface of the substrate layer outside the first partition structure and the second partition structure.
The display panel according to claim 16, wherein the circuit layer comprises a semiconductor layer, a first gate insulating layer, a first gate metal layer, a second gate insulating layer, a second gate metal layer, a first interlayer dielectric layer, and a source/drain metal layer stacked sequentially; wherein The first gate metal layer and/or the second gate metal layer have a raised structure within the isolation region, the raised structure being located below the second isolation structure.
The display panel according to claim 9 or 17 is characterized in that the source/drain metal layer forms the auxiliary fixing part, the third partition part and the fourth partition part in the partition area, and the auxiliary fixing part, the third partition part and the fourth partition part are formed in the partition area.
The display panel according to claim 17 is characterized in that the display panel further includes a cathode layer located on the side of the light-emitting layer away from the anode layer in the display area, and an encapsulation layer located on the side of the cathode layer away from the light-emitting layer; The encapsulation layer comprises a first encapsulation inorganic layer, an encapsulation organic layer, and a second encapsulation inorganic layer, which are stacked sequentially; wherein The first encapsulation inorganic layer, the encapsulation organic layer, and the second encapsulation inorganic layer cover the third partition portion, the first encapsulation inorganic layer and the second encapsulation inorganic layer cover the fourth partition portion, and the encapsulation organic layer does not overlap with the fourth partition portion.
A display device, characterized in that it includes a display panel as described in any one of claims 1-19.

Description

Display panel and display device Technical Field This application relates to the field of display device technology, and more particularly to a display panel and a display device. Background Technology With the continuous development of flexible OLED (Organic Light-Emitting Diode) devices, mobile electronic devices have an increasing demand for full-screen displays, making the punch-hole technology for display screens increasingly urgent. In existing display panels, there is usually a barrier setting area between the screen hole (AAhole, AAH) and the display area. The barrier setting area is equipped with a barrier to prevent the vapor-deposited organic material that is prone to water absorption and failure from entering the AAH. However, the use of a barrier structure will cause multiple stress concentration points in the barrier setting area. During the laser lift-off (LLO) process, that is, the process of using laser lift-off technology to peel the display components fabricated on the flexible substrate from the rigid substrate, the laser can easily cause the organic light-emitting layer in the barrier setting area to vaporize, causing the film layers to peel off, affecting the stability and reliability of the display panel. Summary of the Invention This application provides a display panel that effectively solves the problem of film peeling. It includes a display area and a non-display area, the non-display area including an opening and a partition area, the partition area being located between the opening and the display area, and the partition area surrounding at least a portion of the opening; The display panel includes a planarization layer in the display area, and the planarization layer has a first partition structure in the partition area. The first partition structure includes a main top surface and a main bottom surface opposite each other in a direction perpendicular to the plane of the display panel, and a main side surface connecting the main top surface and the main bottom surface. The display panel is located in the partition, which includes a substrate layer. The first partition structure is formed on the substrate layer. A reinforcing structure is also provided on the substrate layer. The reinforcing structure is at least partially in contact with at least a portion of the side surface of the first partition structure and in contact with the substrate layer. In one embodiment, the first partition structure includes a first partition portion and a second partition portion, wherein the first partition portion and the second partition portion are arranged sequentially along a direction perpendicular to the plane where the display panel is located. The first partition includes a first bottom surface and a first top surface opposite each other in a direction perpendicular to the plane of the display panel, and a first side surface connecting the first top surface and the first bottom surface. The second partition includes a second bottom surface and a second top surface opposite each other in a direction perpendicular to the plane of the display panel, and a second side surface connecting the second top surface and the second bottom surface. The first top surface and the second bottom surface are in at least partial contact. In one embodiment, the second partition portion is located on the first top surface, and the area of the second bottom surface of the second partition portion is smaller than the area of the first top surface. In one embodiment, the area of the second bottom surface of the second partition is larger than the area of the first bottom surface of the first partition, and the second bottom surface of the second partition completely covers the first side surface of the first partition. In one embodiment, the reinforcing structure includes an auxiliary fixing layer that covers the substrate layer of the outer peripheral portion of the main bottom surface of the first partition structure to at least a portion of the main side surface of the first partition structure. In one embodiment, the display panel further includes an anode layer, which is stacked sequentially with the planarization layer in a direction perpendicular to the plane of the display panel. When the second partition is located on the first top surface, and the area of the second bottom surface of the second partition is smaller than that of the first top surface, the anode layer forms the auxiliary fixing layer in the partition area, and the auxiliary fixing layer covers the first side surface of the first partition and the blank part on the first top surface of the first partition that is not covered by the second bottom surface. In one embodiment, the auxiliary fixing layer covers the substrate layer, main side surface, and main top surface of the outer periphery of the main bottom surface of the first partition structure. In one embodiment, a plurality of vent holes are provided on the auxiliary fixing layer l