CN-121985686-A - Display panel and display device

CN121985686ACN 121985686 ACN121985686 ACN 121985686ACN-121985686-A

Abstract

The application relates to a display panel and a display device. The display panel comprises a substrate, a plurality of first electrodes, a pixel definition layer, a plurality of first optical enhancement structures and/or a plurality of second optical enhancement structures, wherein the first electrodes are arranged on one side of the substrate at intervals, the pixel definition layer comprises a pixel definition structure and a plurality of pixel openings surrounded by the pixel definition structure, the pixel openings expose the corresponding first electrodes, the first optical enhancement structures are arranged in the first electrodes, and the second optical enhancement structures are arranged on the side walls of the pixel openings. The application can improve the light-emitting efficiency of the light-emitting device.

Inventors

SONG WENFENG
ZHANG RONG
JIANG BO

Assignees

云谷（固安）科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. A display panel, comprising: A substrate; a plurality of first electrodes disposed at intervals on one side of the substrate; A pixel definition layer including a pixel definition structure and a plurality of pixel openings surrounded by the pixel definition structure, the pixel openings exposing the corresponding first electrodes; A plurality of first optical enhancement structures and/or a plurality of second optical enhancement structures, wherein the first optical enhancement structures are arranged in the first electrode, and the second optical enhancement structures are arranged on the side walls of the pixel openings.
2. The display panel of claim 1, wherein the first optical enhancement structure and the second optical enhancement structure are each an insulating structure and each include a stack of alternately arranged first optical film layers and second optical film layers, the first optical film layers having a refractive index greater than a refractive index of the second optical film layers; optionally, the material of the first optical film layer includes silicon oxide, and the material of the second optical film layer includes at least one of silicon nitride, titanium oxide, zirconium oxide, and niobium oxide.
3. The display panel of claim 1, wherein the display panel comprises a plurality of the first optical enhancement structures; The first electrode comprises a first sub-conductive layer and a second sub-conductive layer, the first optical enhancement structure is arranged between the first sub-conductive layer and the second sub-conductive layer, and the second sub-conductive layer is positioned on one side of the first sub-conductive layer far away from the substrate; optionally, the first sub-conductive layer comprises a transparent material; optionally, the second sub-conductive layer comprises a transparent material; Optionally, the first optical enhancement structure covers at least part of the side wall of the first sub-conductive layer and extends between two adjacent first sub-conductive layers in a direction parallel to the plane of the substrate, and the two adjacent first optical enhancement structures are arranged at intervals or connected.
4. The display panel of claim 3, wherein the first electrode comprises a further third sub-conductive layer disposed between the first sub-conductive layer and the second sub-conductive layer.
5. The display panel of claim 4, wherein the third sub-conductive layer is disposed between the first sub-conductive layer and the first optical enhancement structure; Optionally, the material of the third sub-conductive layer includes a reflective metal.
6. The display panel of claim 3 or 4, wherein the second sub-conductive layer is electrically connected to the first sub-conductive layer; Optionally, the second sub-conductive layer is electrically connected to the first sub-conductive layer through a via in the first optical enhancement structure; optionally, the second sub-conductive layer covers a portion of the sidewall of the first optical enhancement structure to electrically connect the first sub-conductive layer.
7. The display panel according to claim 3 or 4, comprising a plurality of light-emitting devices including the first electrode, a light-emitting functional layer, and a second electrode which are sequentially stacked in a direction perpendicular to a plane in which the substrate is located; The plurality of light emitting devices include a first color light emitting device and a second color light emitting device that emit light of different colors; The thickness of the first optical enhancement structure in the first electrode of the first color light emitting device is different from the thickness in the first electrode of the second color light emitting device; optionally, the plurality of light emitting devices further includes a third color light emitting device, and the first color light emitting device, the second color light emitting device, and the third color light emitting device each emit light of a different color; The thickness of the first optical enhancement structure in the first electrode of the first color light emitting device, the thickness in the first electrode of the second color light emitting device, and the thickness in the first electrode of the third color light emitting device are all different.
8. The display panel of claim 7, wherein the first, second, and third color light emitting devices are different ones of a red, green, and blue light emitting device, respectively; The thickness of the first optical enhancement structure in the first electrode of the red light emitting device is greater than the thickness in the first electrode of the green light emitting device; optionally, the thickness of the first optical enhancement structure in the first electrode of the green light emitting device is greater than the thickness in the first electrode of the blue light emitting device.
9. The display panel of claim 1, wherein the display panel comprises a plurality of the second optical enhancement structures; And the second optical enhancement structure is orthographic projected on the substrate, and the bottom wall surrounding the corresponding pixel opening is orthographic projected on the substrate.
10. A display device comprising the display panel according to any one of claims 1 to 9.

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 An OLED (Organic LIGHT EMITTING Diode) display panel is one of the hot spots in the research field of the current display panel, and the OLED display panel has the advantages of low energy consumption, low cost, self-luminescence, wide viewing angle, fast response speed and the like. However, the light emitting device of the OLED display panel in the related art has a problem of low light emitting efficiency. Disclosure of Invention Accordingly, it is necessary to provide a display panel and a display device for improving the problem of low light output efficiency of the light emitting device of the OLED display panel in the related art. According to a first aspect of the present application, there is provided a display panel comprising: A substrate; a plurality of first electrodes disposed at intervals on one side of the substrate; A pixel definition layer including a pixel definition structure and a plurality of pixel openings surrounded by the pixel definition structure, the pixel openings exposing the corresponding first electrodes; A plurality of first optical enhancement structures and/or a plurality of second optical enhancement structures, wherein the first optical enhancement structures are arranged in the first electrode, and the second optical enhancement structures are arranged on the side walls of the pixel openings. In some embodiments, the first optical enhancement structure and the second optical enhancement structure are both insulating structures and each include a stack of alternately disposed first optical film layers and second optical film layers, the first optical film layers having a refractive index greater than the refractive index of the second optical film layers; optionally, the material of the first optical film layer includes silicon oxide, and the material of the second optical film layer includes at least one of silicon nitride, titanium oxide, zirconium oxide, and niobium oxide. In some embodiments, the display panel includes a plurality of the first optical enhancement structures; The first electrode comprises a first sub-conductive layer and a second sub-conductive layer, the first optical enhancement structure is arranged between the first sub-conductive layer and the second sub-conductive layer, and the second sub-conductive layer is positioned on one side of the first sub-conductive layer far away from the substrate; optionally, the first sub-conductive layer comprises a transparent material; optionally, the second sub-conductive layer comprises a transparent material; Optionally, the first optical enhancement structure covers at least part of the side wall of the first sub-conductive layer and extends between two adjacent first sub-conductive layers in a direction parallel to the plane of the substrate, and the two adjacent first optical enhancement structures are arranged at intervals or connected. In some embodiments, the first electrode includes a further third sub-conductive layer disposed between the first sub-conductive layer and the second sub-conductive layer. In some embodiments, the third sub-conductive layer is disposed between the first sub-conductive layer and the first optical enhancement structure; Optionally, the material of the third sub-conductive layer includes a reflective metal. In some embodiments, the second sub-conductive layer is electrically connected to the first sub-conductive layer; Optionally, the second sub-conductive layer is electrically connected to the first sub-conductive layer through a via in the first optical enhancement structure; optionally, the second sub-conductive layer covers a portion of the sidewall of the first optical enhancement structure to electrically connect the first sub-conductive layer. In some embodiments, the light emitting device comprises a plurality of light emitting devices, wherein the light emitting devices comprise a first electrode, a light emitting functional layer and a second electrode which are sequentially stacked in a direction perpendicular to a plane of the substrate; The plurality of light emitting devices include a first color light emitting device and a second color light emitting device that emit light of different colors; The thickness of the first optical enhancement structure in the first electrode of the first color light emitting device is different from the thickness in the first electrode of the second color light emitting device; optionally, the plurality of light emitting devices further includes a third color light emitting device, and the first color light emitting device, the second color light emitting device, and the third color light emitting device each emit light of a different color; The thickness of the first optical enhancement structure in the first electrode of the first color light