Display panel and manufacturing method thereof, and display device

Patent metadata

Field	Value
Publication number	US-12543448-B2
Application number	US-202218025735-A
Country	US
Kind code	B2
Filing date	Apr 24, 2022
Priority date	Apr 24, 2022
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

Provided are a display panel and a manufacturing method thereof and a display device. The display panel includes: a base substrate; a pixel defining layer including first openings defining sub-pixels; an encapsulation layer; and a light modulation layer. The light modulation layer is configured such that light from each of at least one sub-pixel propagates along a direction away from the base substrate after total reflection upon incidence on an interface between the first light modulation portion in a corresponding second opening and the first light modulation sub-layer. The display panel satisfies at least one of a first condition or a second condition. The first condition is that at least a part of edge of the first orthographic projection has a recess. The second condition is that at least a part of edge of the second orthogonal projection has at least one of a recess or a protrusion.

First claim

What is claimed is:

1 . A display panel, comprising:
a base substrate; a pixel defining layer located on one side of the base substrate and having a plurality of first openings for defining a plurality of sub-pixels, wherein the plurality of first openings is in one-to-one correspondence to the plurality of sub-pixels; an encapsulation layer located on one side of the pixel defining layer away from the base substrate; and a light modulation layer located on one side of the encapsulation layer away from the base substrate, and comprising: a first light modulation sub-layer having at least one second opening in one-to-one correspondence to at least one sub-pixel of the plurality of sub-pixels, wherein orthographic projections of a first opening and a second opening which correspond to each of the at least one sub-pixel on the base substrate are a first orthographic projection and a second orthographic projection respectively, a second light modulation sub-layer comprising a first light modulation portion located in each of the at least one second opening, and a second light modulation portion, the second light modulation portion being located on one side of the first light modulation portion and the first light modulation sub-layer away from the base substrate, and adjacent to the first light modulation portion, wherein each of the first light modulation portion and the second light modulation portion comprises a first surface and a second surface arranged oppositely, and a third surface and a fourth surface arranged oppositely, the second surface is located on one side of the first surface away from the base substrate, each of the third surface and the fourth surface is adjacent to the first surface and the second surface, and a first comprised angle between each of the third surface and the fourth surface of the second light modulation portion and the first surface of the second light modulation portion is smaller than 90 degrees; and a third light modulation sub-layer located on one side of the first light modulation sub-layer and the second light modulation sub-layer away from the base substrate, wherein a refractive index of the third light modulation sub-layer is smaller than a refractive index of the second light modulation portion; wherein the light modulation layer is configured such that light from each of the at least one sub-pixel propagates along a direction away from the base substrate after total reflection upon incidence on an interface between the first light modulation portion in the second opening corresponding to each of the at least one sub-pixel and the first light modulation sub-layer; wherein the display panel satisfies at least one of a first condition or a second condition, wherein: the first condition is that at least a part of an edge of the first orthogonal projection has a recess, and the second condition is that at least a part of an edge of the second orthogonal projection has at least one of a recess or a protrusion, or at least a part of the interface is non-planar.

2 . The display panel according to claim 1 , wherein the at least one sub-pixel comprises a blue sub-pixel.

3 . The display panel according to claim 1 , wherein:
the at least one sub-pixel comprises a first sub-pixel, wherein a length of the first sub-pixel along a first direction is greater than a length of the first sub-pixel along a second direction perpendicular to the first direction; and an edge of each of the first orthographic projection and the second orthographic projection corresponding to each of the at least one sub-pixel comprises a first edge and a second edge arranged oppositely along the first direction, and a third edge and a fourth edge arranged oppositely along the second direction, wherein each of the third edge and the fourth edge is adjacent to the first edge and the second edge.

4 . The display panel according to claim 3 , wherein at least one of the first edge or the second edge of the first orthographic projection of the first sub-pixel has a recess, and the third edge and the fourth edge of the first orthographic projection of the first sub-pixel have no recess.

5 . The display panel according to claim 4 , wherein at least one of the third edge or the fourth edge of the first orthogonal projection of the first sub-pixel has a protrusion.

6 . The display panel according to claim 4 , wherein:
at least one of the first edge or the second edge of the second orthogonal projection of the first sub-pixel has a recess; and/or at least one of the third edge or the fourth edge of the second orthogonal projection of the first sub-pixel has a protrusion.

7 . The display panel according to claim 4 , wherein an edge of the second orthogonal projection of the first sub-pixel has no recess and has no protrusion.

8 . The display panel according to claim 3 , wherein:
an edge of the first orthographic projection of the first sub-pixel has no recess and has no protrusion, and at least one of the first edge or the second edge of the second orthographic projection of the first sub-pixel has a recess; and/or an edge of the first orthographic projection of the first sub-pixel has no recess and has no protrusion, and at least one of the third edge or the fourth edge of the second orthographic projection of the first sub-pixel has a protrusion.

9 . The display panel according to claim 3 , wherein the plurality of sub-pixels comprises the first sub-pixel, a second sub-pixel and a third sub-pixel configured to emit light of different colors, and a ratio of the length of the first sub-pixel along the first direction to the length of the first sub-pixel along the second direction is greater than a ratio of a length of the second sub-pixel along the first direction to a length of the second sub-pixel along the second direction, and greater than a ratio of a length of the third sub-pixel along the first direction to a length of the third sub-pixel along the second direction.

10 . The display panel according to claim 9 , wherein the first sub-pixel is a red sub-pixel.

11 . The display panel according to claim 1 , wherein the first comprised angle is greater than or equal to 60 degrees.

12 . The display panel according to claim 1 , wherein a supplementary angle of a second comprised angle between each of the third surface and the fourth surface of the first light modulation portion and the first surface of the first light modulation portion is greater than or equal to 60 degrees, and smaller than or equal to 80 degrees.

13 . The display panel according to claim 1 , wherein:
the at least one sub-pixel comprises a first sub-pixel, wherein a length of the first sub-pixel along a first direction is greater than a length of the first sub-pixel along a second direction perpendicular to the first direction, and an orthographic projection of the second light modulation portion corresponding to each of the at least one sub-pixel on the base substrate is a third orthographic projection; an edge of each of the first orthographic projection, the second orthographic projection and the third orthographic projection corresponding to each of the at least one sub-pixel comprises a first edge and a second edge arranged oppositely along the first direction, and a third edge and a fourth edge arranged oppositely along the second direction, wherein each of the third edge and the fourth edge is adjacent to the first edge and the second edge, and at least one of the first edge or the second edge of the first orthographic projection corresponding to the first sub-pixel has a recess.

14 . The display panel according to claim 13 , where

Assignees

• Boe Technology Group Co Ltd

Inventors

• Han Cheng
• Jin Kaijia
• Fan Xing
• Wang Yanming
• Wu Qixiao
• Wen Xiangmin
• YANG Bingwei
• Wang Shun
• Wu Songquan
• Li Yansong

Classifications

• H10K59/876 Primary

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10D99/00

  Subject matter not provided for in other groups of this subclass · CPC title

• H10K50/80

  Constructional details · CPC title