CN-117279419-B - Display panel, preparation method thereof and display device

CN117279419BCN 117279419 BCN117279419 BCN 117279419BCN-117279419-B

Abstract

The invention relates to the technical field of display, and discloses a display panel, a preparation method thereof and a display device; the display panel comprises a display substrate, a packaging layer group and a first light enhancement layer, wherein the display substrate comprises a plurality of sub-pixels, the packaging layer group comprises at least two organic film layers which are arranged on the light emergent side of the display substrate, the first light enhancement layer is arranged on one side of the packaging layer group, which is away from the display substrate, and comprises a plurality of protruding parts, the orthographic projection of the protruding parts on the display substrate is overlapped with the sub-pixels at least partially, and the front light emergent efficiency of the display panel is high and the power consumption is low.

Inventors

LI XIAOHU
YUAN GUANGCAI
WANG HONGLI
LIU XU
WU TONG
An Che
LIU WENQI
JIN QIAN
LU TIANHAO
JIAO ZHIQIANG

Assignees

京东方科技集团股份有限公司
北京京东方技术开发有限公司

Dates

Publication Date: 20260512
Application Date: 20230919

Claims (10)

1. A display panel, comprising: A display substrate including a plurality of sub-pixels; the packaging layer group is arranged on the light emitting side of the display substrate and comprises at least two organic film layers which are arranged in a layer-by-layer manner; The first light enhancement layer is arranged on one side, away from the display substrate, of the packaging layer group, and comprises a plurality of protruding parts, and orthographic projection of the protruding parts on the display substrate is at least partially overlapped with the sub-pixels; A leveling property improving layer is arranged between two adjacent organic film layers; the leveling property improving layer is more hydrophilic than the organic film layer adjacent to the leveling property improving layer and closer to the display substrate, and the leveling property improving layer is a surface microstructure layer of the organic film layer closer to the display substrate.
2. The display panel according to claim 1, wherein a refractive index of the organic film layer adjacent to the leveling property improving layer and further from the display substrate is greater than or equal to a refractive index of the leveling property improving layer.
3. The display panel according to claim 1, wherein refractive indices of at least two of the organic film layers increase with increasing distance from the display substrate.
4. A display panel according to any one of claims 2 to 3, wherein at least two of the organic film layers include: the first organic layer is arranged on the light emitting side of the display substrate, and the leveling property improving layer is arranged on one side of the first organic layer, which is away from the display substrate; The second organic layer is arranged on one side of the leveling property improving layer, which is away from the display substrate; And a concave structure is arranged on one surface of the first organic layer, which is close to the leveling property improving layer, and a convex structure is formed on the part of the second organic layer, which is positioned in the concave structure.
5. The display panel of claim 4, wherein an orthographic projection of one of the protruding structures on the display substrate at least partially overlaps one of the sub-pixels, or wherein orthographic projections of a plurality of the protruding structures on the display substrate at least partially overlap one of the sub-pixels.
6. A display panel according to any one of claims 1 to 3, further comprising: the second light enhancement layer is arranged between the first light enhancement layer and the packaging layer group, and the refractive index of the second light enhancement layer is larger than that of a film layer adjacent to the second light enhancement layer in the packaging layer group.
7. A display panel according to any one of claims 1 to 3, further comprising: The buffer layer is arranged on one side, close to the packaging layer group, of the first light enhancement layer, and is made of lyophobic materials; the flattening layer is arranged on one side, away from the display substrate, of the first light enhancement layer, and the refractive index of the first light enhancement layer is larger than that of the flattening layer.
8. The display panel according to any one of claims 1 to 3, wherein at least two organic film layers stacked on each other form an organic film layer group, and the encapsulation layer group further includes: the first inorganic layer is arranged between the display substrate and the organic film layer group; The second inorganic layer is arranged on one side of the organic film layer group, which is away from the display substrate.
9. A method for manufacturing a display panel, comprising: providing a display substrate, wherein the display substrate comprises a plurality of sub-pixels; Forming a packaging layer group on the light emitting side of the display substrate, wherein the packaging layer group comprises at least two organic film layers which are arranged in a layer-by-layer manner; forming a first light enhancement layer on one side of the packaging layer group away from the display substrate, wherein the first light enhancement layer comprises a plurality of protruding parts, and orthographic projection of the protruding parts on the display substrate is at least partially overlapped with the sub-pixels; forming a package layer group on the light emitting side of the display substrate, including: forming a first organic layer on a light-emitting side of the display substrate; performing plasma treatment on the first organic layer to enable the first organic layer to form a leveling property improvement layer on the surface, which is away from the display substrate; Forming a second organic layer on one side of the leveling property improving layer away from the display substrate; the plasma treatment comprises bombarding the surface of the first organic layer through an oxygen ion body so that a rugged structural layer is formed on the surface of the first organic layer, wherein the rugged structural layer is a surface microstructure layer.
10. A display device, comprising: a display panel according to any one of claims 1 to 8.

Description

Display panel, preparation method thereof and display device Technical Field The disclosure relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device. Background The display panel of the diode light-emitting device has the advantages of high brightness contrast ratio, high picture refreshing response speed, wide space viewable viewing angle, large environment temperature application range, high color rendering index and the like, and can meet the new requirements of consumers on display technology. The external quantum efficiency of the display panel is generally only 20%, and most of light energy is consumed in the form of metal surface plasmon or light waveguide mode of total reflection due to refractive index difference of film medium. However, as the requirements of consumers on display products are higher, the front view brightness of the current display module is lower, so that the power consumption of the products is higher, and the requirements of consumers cannot be met. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of Invention The present disclosure aims to overcome the defects of the prior art, and provides a display panel, a preparation method thereof and a display device. According to an aspect of the present disclosure, there is provided a display panel including: A display substrate including a plurality of sub-pixels; the packaging layer group is arranged on the light emitting side of the display substrate and comprises at least two organic film layers which are arranged in a layer-by-layer manner; The first light enhancement layer is arranged on one side, away from the display substrate, of the packaging layer group, and comprises a plurality of protruding parts, and orthographic projection of the protruding parts on the display substrate is overlapped with the sub-pixels at least partially. In one exemplary embodiment of the present disclosure, a leveling property improving layer is disposed between two adjacent organic film layers. In one exemplary embodiment of the present disclosure, the leveling property improving layer has a hydrophilicity that is stronger than a hydrophilicity of the organic film layer adjacent to the leveling property improving layer and closer to the display substrate. In an exemplary embodiment of the present disclosure, the material of the leveling property improving layer is an inorganic material, or the leveling property improving layer is a surface fluorinated layer or a surface microstructure layer of the organic film layer closer to the display substrate. In one exemplary embodiment of the present disclosure, a refractive index of the organic film layer adjacent to the leveling property improving layer and further from the display substrate is greater than or equal to a refractive index of the leveling property improving layer. In one exemplary embodiment of the present disclosure, the refractive index of at least two of the organic film layers increases with increasing distance from the display substrate. In one exemplary embodiment of the present disclosure, at least two of the organic film layers include: the first organic layer is arranged on the light emitting side of the display substrate, and the leveling property improving layer is arranged on one side of the first organic layer, which is away from the display substrate; The second organic layer is arranged on one side of the leveling property improving layer, which is away from the display substrate; And a concave structure is arranged on one surface of the first organic layer, which is close to the leveling property improving layer, and a convex structure is formed on the part of the second organic layer, which is positioned in the concave part. In an exemplary embodiment of the present disclosure, an orthographic projection of one of the protruding structures on the display substrate at least partially overlaps one of the sub-pixels, or orthographic projections of a plurality of the protruding structures on the display substrate at least partially overlaps one of the sub-pixels. In an exemplary embodiment of the present disclosure, the display panel further includes: the second light enhancement layer is arranged between the first light enhancement layer and the packaging layer group, and the refractive index of the second light enhancement layer is larger than that of a film layer adjacent to the second light enhancement layer in the packaging layer group. In an exemplary embodiment of the present disclosure, the display panel further includes: The buffer layer is arranged on one side, close to the packaging layer group, of the first light enhancement layer, and is made of lyophobic materials