Display panel and display device

Patent metadata

Field	Value
Publication number	US-11782189-B2
Application number	US-202017006746-A
Country	US
Kind code	B2
Filing date	Aug 28, 2020
Priority date	Jun 29, 2020
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

The present disclosure provides a display panel and a display device including the display panel. The display panel has a display region including a first display region and a second display region, and the first display region has a smaller sub-pixel density than the second display region. Light-shielding structures are arranged in the first display region, and one light-shielding structure overlaps a light-emitting region of at least one first sub-pixel. The light-shielding structure group constituted by the light-shielding structures includes main and auxiliary light-shielding structures having the same shape. When viewed from the top at the same viewing angle, the auxiliary light-shielding structure is equivalent to a structure obtained by rotating the main light-shielding structure by a certain angle in a plane where the main light-shielding structure is located. With this design, a light diffraction phenomenon is alleviated and the imaging quality of the under-screen optical device is improved.

First claim

What is claimed is:

1. A display panel, having a display region comprising a first display region and a second display region, the display panel comprising:
a plurality of sub-pixels located in the display region and comprising first sub-pixels located in the first display region and second sub-pixels located in the second display region, wherein a density of the first sub-pixels is smaller than a density of the second sub-pixels;
a base substrate; and
a light-shielding structure array located on the base substrate in the first display region and comprising a plurality of light-shielding structures, wherein the plurality of light-shielding structures is divided into at least one light-shielding structure group,
wherein in a direction perpendicular to the display panel, one of the plurality of light-shielding structures overlaps a light-emitting region of at least one of the first sub-pixels,
wherein each of the at least one light-shielding structure group comprises a main light-shielding structure and at least one auxiliary light-shielding structure, an orthographic projection of the main light-shielding structure onto the base substrate is a main projection, an orthographic projection of each of the at least one auxiliary light-shielding structure onto the base substrate is an auxiliary projection, and a shape of the main projection is the same as a shape of the auxiliary projection, and the shape of the auxiliary projection is obtained by rotating the shape of the main projection,
the main projection comprises a main vertex angle, the auxiliary projection comprises an auxiliary vertex angle, and the main vertex angle and the auxiliary vertex angle form corresponding angles to each other,
a main vector is formed by a gravity center of the main projection as a starting point and a vertex of the main vertex angle as an end point,
in each auxiliary projection, an auxiliary vector is formed by a gravity center of the auxiliary projection as a starting point and the auxiliary vertex angle of a vertex of the auxiliary projection as an end point, and
a direction of the main vector is different from a direction of the auxiliary vector.

2. The display panel according to claim 1 ,
wherein the at least one auxiliary light-shielding structure of each of the at least one light-shielding structure group comprises n auxiliary light-shielding structures, where n is an integer greater than or equal to 2,
wherein each auxiliary light-shielding structure of the n auxiliary light-shielding structures corresponds to the auxiliary vector of the orthographic projection of the auxiliary light-shielding structure, and two auxiliary vectors corresponding to any two of the n auxiliary light-shielding structures in the light-shielding structure group have different directions.

3. The display panel according to claim 2 , wherein
an included angle between the auxiliary vector and the main vector is a rotation angle corresponding to the auxiliary light-shielding structure corresponding to the auxiliary vector; and
in the light-shielding structure group, rotation angles corresponding to the n auxiliary light-shielding structures have different values.

4. The display panel according to claim 2 , wherein
an included angle between the auxiliary vector and the main vector is a rotation angle; and
the light-shielding structure group comprises a first auxiliary light-shielding structure and a second auxiliary light-shielding structure, a rotation angle corresponding to the first auxiliary light-shielding structure and a rotation angle corresponding to the second auxiliary light-shielding structure have a same value.

5. The display panel according to claim 2 ,
wherein the at least one light-shielding structure group comprises at least one first light-shielding structure group,
wherein in each of the at least one first light-shielding structure group, the main light-shielding structure and the n auxiliary light-shielding structures are arranged in a first direction, and an included angle between the auxiliary vector and the main vector is a rotation angle corresponding to the auxiliary light-shielding structure corresponding to the auxiliary vector,
wherein in the first light-shielding structure group, rotation angles corresponding to the n auxiliary light-shielding structures gradually increase or decrease in the first direction.

6. The display panel according to claim 5 , wherein in the first light-shielding structure group, a smallest one of the rotation angles corresponding to the n auxiliary light-shielding structures is θ, and an included angle between two auxiliary vectors corresponding to two adjacent auxiliary light-shielding structures is equal to θ.

7. The display panel according to claim 6 , wherein a shape of the main projection is a regular polygon.

8. The display panel according to claim 7 , wherein the main projection comprises m edges, where m is an integer greater than or equal to 3, and

θ
≤

360
⁢
°

m
*

(

n
+
1

)

.

9. The display panel according to claim 5 , wherein the at least one first light-shielding structure group comprises a plurality of first light-shielding structure groups, the plurality of first light-shielding structure groups comprises p first light-shielding structure groups arranged in a second direction to form a first repeated unit, where p is an integer greater than or equal to 2, and the second direction intersects with the first direction,
wherein the light-shielding structure array comprises a plurality of first repeated units that is periodically arranged.

10. The display panel according to claim 9 , wherein main vertex angles of two main projections, onto the base substrate, of two main light-shielding structures in two adjacent first light-shielding structure groups arranged in the first direction are corresponding angles to each other, and two main vectors corresponding to the two main projections have a same direction.

11. The display panel according to claim 9 , wherein the p first light-shielding structure groups comprise p main light-shielding structures arranged in the second direction; and p main projections of the p main light-shielding structures onto the base substrate have a same shape.

12. The display panel according to claim 11 , wherein any two of p main vertex angles of the p main projections are corresponding angles to each other; and main vectors corresponding to the p main light-shielding structures have different directions.

13. The display panel according to claim 12 , wherein
in one of the plurality of first repeated units, the p main light-shielding structures arranged in the second direction are a first main light-shielding structure to a p th main light-shielding structure that are sequentially arranged in the second direction;
the first main light-shielding structure to the p th main light-shielding structure correspond to a main vector i 1 to a main vector i p , respectively; and
an included angle between any two adjacent main vectors of the main vector i 1 to the p th main vector is β, and β is constant

Assignees

• Wuhan Tianma Micro Electronics Co Ltd

Inventors

• He Zhiwei
• Ma Yangzhao
• Xia Zhiqiang
• Zhou Ruiyuan

Classifications

• G02B1/10 Primary

  Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence) · CPC title

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• G06F1/1637 Primary

  Details related to the display arrangement, including those related to the mounting of the display in the housing · CPC title

• H10K59/126

  Shielding, e.g. light-blocking means over the TFTs · CPC title