CN-121985664-A - Display panel and display device

CN121985664ACN 121985664 ACN121985664 ACN 121985664ACN-121985664-A

Abstract

The application relates to a display panel and a display device, comprising a substrate, an array composite layer, a plurality of light-emitting units and a plurality of overflow-preventing structures, wherein the array composite layer is positioned on one side of the substrate, the plurality of light-emitting units are positioned on one side of the array composite layer away from the substrate, the overflow-preventing structures comprise at least one of a plurality of retaining walls and a plurality of grooves, the retaining walls are positioned on one side of the array composite layer away from the substrate, the grooves are positioned on the surface of the array composite layer away from the substrate, and the at least one overflow-preventing structure at least partially surrounds the corresponding light-emitting units in a direction parallel to the plane of the substrate. The application can improve the light-emitting efficiency of the display panel.

Inventors

LI YAYING
CHEN PEIXUAN
HUO SITAO

Assignees

天马新型显示技术研究院(厦门)有限公司

Dates

Publication Date: 20260505
Application Date: 20260226

Claims (15)

1. A display panel, comprising: A substrate; An array composite layer positioned on one side of the substrate; the light-emitting units are positioned on one side of the array composite layer away from the substrate; A plurality of spill-resistant structures; The anti-overflow structure comprises at least one of a plurality of retaining walls and a plurality of grooves, wherein the retaining walls are positioned on one side of the array composite layer far away from the substrate, and the grooves are positioned on the surface of the array composite layer far away from the substrate; wherein at least one of the overflow preventing structures at least partially surrounds the corresponding light emitting unit in a direction parallel to the plane of the substrate.
2. The display panel of claim 1, wherein the display panel comprises, At least one overflow preventing structure comprises at least one flow guiding part, wherein the flow guiding part is a notch or an outer corner; The notch cuts off the overflow preventing structure; In the orthographic projection of the anti-overflow structure on the substrate, the orthographic projection of the outer flange is opposite to the orthographic projection of the two sides of the outer flange, and protrudes towards the direction deviating from the corresponding light-emitting unit.
3. The display panel of claim 2, wherein the display panel comprises, The overflow preventing structure comprises at least one notch; The light-emitting unit comprises at least two adjacent side walls and at least one edge part clamped by the two adjacent side walls, and at least one notch is arranged adjacent to one edge part.
4. The display panel of claim 2, wherein the display panel comprises, The spill-resistant feature includes at least one of the outer flanges; the light-emitting unit comprises at least two adjacent side walls and at least one edge part clamped by the two adjacent side walls, and at least one outer flange is arranged adjacent to one edge part.
5. The display panel of claim 2, wherein the display panel comprises, The anti-overflow structure comprises a plurality of notches and a plurality of first sub-anti-overflow parts, wherein the notches are positioned between two adjacent first sub-anti-overflow parts, and the plurality of first sub-anti-overflow parts surround the light-emitting unit.
6. The display panel of claim 1, wherein the display panel comprises, The plurality of overflow prevention structures comprise a plurality of first overflow prevention structures and a plurality of second overflow prevention structures, and the first overflow prevention structures and the second overflow prevention structures at least partially surround the same corresponding light-emitting units; The second overflow preventing structure is positioned at one side of the first overflow preventing structure away from the corresponding light emitting unit.
7. The display panel of claim 6, wherein the display panel comprises, The first overflow preventing structure and the second overflow preventing structure comprise at least one flow guiding part, and the flow guiding parts are notches or outer corners; The notch cuts off the overflow preventing structure; In the orthographic projection of the anti-overflow structure on the substrate, the orthographic projection of the outer flange is opposite to the orthographic projection of the two sides of the outer flange, and protrudes towards the direction deviating from the corresponding light-emitting unit.
8. The display panel of claim 6, wherein the display panel comprises, The plurality of overflow preventing structures comprise a plurality of retaining walls, the plurality of retaining walls comprise a first retaining wall and a second retaining wall, and the heights of the first retaining wall and the second retaining wall are different; the first overflow preventing structure and the second overflow preventing structure are respectively the first retaining wall and the second retaining wall.
9. The display panel of claim 6, wherein the display panel comprises, The plurality of overflow preventing structures comprise a plurality of retaining walls and a plurality of grooves, and the plurality of retaining walls comprise a plurality of first retaining walls; one of the first overflow preventing structure and the second overflow preventing structure is the first retaining wall, and the other is the groove.
10. The display panel of claim 6, wherein the display panel comprises, The plurality of overflow preventing structures comprise a plurality of retaining walls and a plurality of grooves, and the plurality of retaining walls comprise a plurality of first retaining walls and a plurality of second retaining walls; The second overflow preventing structures are positioned at one side of the first overflow preventing structures away from the corresponding light emitting units, and the third overflow preventing structures are positioned at one side of the second overflow preventing structures away from the corresponding light emitting units; The first overflow preventing structure, the second overflow preventing structure and the third overflow preventing structure are respectively different from the first retaining wall, the second retaining wall and the groove, and the first overflow preventing structure, the second overflow preventing structure and the third overflow preventing structure are different.
11. The display panel of claim 6, wherein the display panel comprises, The overflow preventing structures comprise a plurality of retaining walls and a plurality of grooves, and the retaining walls comprise a plurality of first retaining walls, a plurality of second retaining walls and a plurality of third retaining walls, wherein the heights of the first retaining walls, the second retaining walls and the third retaining walls are different; The second overflow preventing structures are positioned at one side of the first overflow preventing structures far away from the corresponding light emitting units, the third overflow preventing structures are positioned at one side of the second overflow preventing structures far away from the corresponding light emitting units, and the fourth overflow preventing structures are positioned at one side of the third overflow preventing structures far away from the corresponding light emitting units; The first overflow preventing structure, the second overflow preventing structure, the third overflow preventing structure and the fourth overflow preventing structure are respectively different from the first retaining wall, the second retaining wall, the third retaining wall and the groove, and the first overflow preventing structure, the second overflow preventing structure, the third overflow preventing structure and the fourth overflow preventing structure are different.
12. The display panel of claim 11, wherein the display panel comprises, In the direction perpendicular to the plane of the substrate, the height of the first retaining wall is greater than that of the second retaining wall, and the height of the second retaining wall is greater than that of the third retaining wall; The height difference between the first retaining wall and the second retaining wall is 0.3-0.7 mu m; The height difference between the second retaining wall and the third retaining wall is larger than or equal to 0.7 mu m; the depth of the groove is greater than or equal to 0.2 μm.
13. The display panel of claim 11, wherein the array composite layer comprises a first metal layer and a first insulating layer, the first insulating layer being located on a side of the first metal layer away from the substrate, the display panel further comprising: a barrier layer located on a side of the first insulating layer away from the substrate and at least located between two adjacent light emitting units, the barrier layer comprising an organic material; A light shielding layer which is positioned on one side of the first insulating layer away from the substrate and covers at least part of the surface of the barrier layer; wherein the first retaining wall comprises at least part of the barrier layer, the first insulating layer and the first metal layer; The second retaining wall comprises at least part of the blocking layer and the first insulating layer; the third retaining wall comprises at least part of the first insulating layer and the first metal layer; The groove penetrates through at least the first insulating layer.
14. The display panel of claim 1, wherein the display panel comprises, The plurality of light emitting units comprises a first light emitting unit and a second light emitting unit, wherein the area of orthographic projection of the first light emitting unit on the substrate is smaller than the area of orthographic projection of the second light emitting unit on the substrate, the number of the overflow preventing structures surrounding the first light emitting unit is smaller than the number of the overflow preventing structures surrounding the second light emitting unit, and/or, The plurality of light emitting units comprises a first type of light emitting unit, the orthographic projection of the first type of light emitting unit on the substrate comprises a first edge and a second edge, the length of the first edge is larger than that of the second edge, and the number of the overflow preventing structures around the first edge is larger than that around the second edge.
15. A display device comprising the display panel according to any one of claims 1 to 14.

Description

Display panel and display device Technical Field The present application relates to the field of display technologies, and in particular, to a display panel and a display device. Background Along with the continuous development of display technology, micro-component display panels including a Mini LED (MINI LIGHT-emission Diode) display panel, a Micro LED (MicroLED) display panel, and other display panels will be widely used in multiple fields such as flat panel display, flexible display, vehicle-mounted display, and solid-state lighting, and along with the progress of display technology and the expansion of application scenarios, the requirements of users and markets on the functions of the display device are more and more abundant. However, the related art has a problem in that the light extraction efficiency is lowered. Disclosure of Invention Accordingly, there is a need for a display panel and a display device that solve the problem of reduced light extraction efficiency in the related art. In a first aspect, an embodiment of the present application provides a display panel, including: A substrate; An array composite layer positioned on one side of the substrate; the light-emitting units are positioned on one side of the array composite layer away from the substrate; A plurality of spill-resistant structures; The anti-overflow structure comprises at least one of a plurality of retaining walls and a plurality of grooves, wherein the retaining walls are positioned on one side of the array composite layer far away from the substrate, and the grooves are positioned on the surface of the array composite layer far away from the substrate; wherein at least one of the overflow preventing structures at least partially surrounds the corresponding light emitting unit in a direction parallel to the plane of the substrate. In a second aspect, based on the same application concept, an embodiment of the present application further provides a display device, where the display device includes any one of the display panels provided in the first aspect. The display panel comprises a substrate, an array composite layer, a plurality of light-emitting units and a plurality of overflow-preventing structures, wherein the array composite layer is positioned on one side of the substrate, the plurality of light-emitting units are positioned on one side of the array composite layer away from the substrate, the overflow-preventing structures comprise at least one of a plurality of retaining walls and a plurality of grooves, the retaining walls are positioned on one side of the array composite layer away from the substrate, the grooves are positioned on the surface of the array composite layer away from the substrate, and the overflow-preventing structures at least partially surround the corresponding light-emitting units in a direction parallel to the plane of the substrate. At least one anti-overflow structure is arranged around the light-emitting unit in the direction parallel to the plane of the substrate, and in the manufacturing process of the display panel, the anti-overflow structure can prevent the light-shielding layer/black ink layer from diffusing and climbing to the surface of the light-emitting unit far away from the substrate, so that the light emitted by the light-emitting unit is prevented from being shielded by the light-shielding layer/black ink layer, and the light-emitting efficiency is improved. Drawings In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art. Fig. 1 is a schematic diagram of a first cross-sectional structure of a display panel according to an embodiment of the application. Fig. 2 is a schematic diagram of a second cross-sectional structure of a display panel according to an embodiment of the application. Fig. 3 is a schematic diagram of a third cross-sectional structure of a display panel according to an embodiment of the application. Fig. 4 is a schematic diagram of a fourth cross-sectional structure of a display panel according to an embodiment of the present application. Fig. 5 is a schematic diagram of a fifth cross-sectional structure of a display panel according to an embodiment of the application. Fig. 6 is a first schematic top view of a display panel according to an embodiment of the application. Fig. 7 is a second schematic top view of the anti-overflow structure surrounding the light emitting unit in the display panel according to the embodiment of the application. Fig. 8 is a third schematic top view of a display panel according to an embodiment