Display panel and display device

Patent metadata

Field	Value
Publication number	US-11822176-B2
Application number	US-202017309726-A
Country	US
Kind code	B2
Filing date	Dec 29, 2020
Priority date	Mar 6, 2020
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

There is provided a display panel including: a light guide structure layer having a light exiting side and configured to enable internal light to be emitted from a preset position; a display structure layer on the light exiting side and including a light adjusting structure, a black matrix and a reflection matrix positioned on a side, away from the light guide structure layer, of the light adjusting structure, the light adjusting structure is configured to control light emitted from the preset position to enter an area where the black matrix is positioned and/or an area where the reflection matrix is positioned; a light absorption structure layer on a side of the light adjusting structure away from the black matrix and configured to absorb light reflected by the black matrix and allow light reflected by the reflection matrix to pass through. A display device is further provided.

First claim

The invention claimed is:

1. A display panel, comprising:
a light guide structure layer having a light exiting side and configured to enable internal light to be emitted from a preset position of the light exiting side;
a display structure layer arranged on the light exiting side of the light guide structure layer and comprises a light adjusting structure, a black matrix and a reflection matrix, the black matrix and the reflection matrix are positioned on a side, away from the light guide structure layer, of the light adjusting structure, and the light adjusting structure is configured to control light emitted from the preset position to be incident into an area where the black matrix is positioned and/or an area where the reflection matrix is positioned; and
a light absorption structure layer positioned on a side of the light adjusting structure away from the black matrix, and configured to absorb light reflected by a surface of the black matrix and allow light reflected by a surface of the reflection matrix to pass through.

2. The display panel of claim 1 , wherein the display structure layer has a display area comprising a plurality of sub-pixel areas;
the light guide structure layer comprises a plurality of light extracting openings which are positioned at preset positions and correspond to the sub-pixel areas one by one;
the black matrix comprises a plurality of light blocking elements which correspond to the sub-pixel areas one by one;
the reflection matrix comprises a plurality of light reflecting elements which correspond to the sub-pixel areas one by one;
the light absorption structure layer comprises a plurality of light absorption elements which correspond to the sub-pixel areas one by one;
the light extracting openings, the light blocking elements, the light reflecting elements and the light absorption elements are all positioned in the corresponding sub-pixel areas.

3. The display panel of claim 2 , wherein the light blocking element comprises: a first light blocking pattern and a second light blocking pattern;
the second light blocking pattern is located on a side, proximal to the light adjusting structure, of the first light blocking pattern, a surface, away from the first light blocking pattern, of the second light blocking pattern is a first inclined surface, a plane where the first inclined surface is located is intersected with a plane where the first light blocking pattern is located, and the first inclined surface faces the light extracting opening located in the sub-pixel area where the light blocking element is located.

4. The display panel of claim 3 , wherein in each of the sub-pixel areas, the light reflecting element is farther from the light extracting opening than the second light blocking pattern;
an orthographic projection of the second light blocking pattern on the plane where the first light blocking pattern is located is in contact with an orthographic projection of the light reflecting element on the plane where the first light blocking pattern is located.

5. The display panel of claim 3 , wherein in each of the sub-pixel areas, the light reflecting element is positioned at a side of the first light blocking pattern proximal to the light adjusting structure;
the light reflecting element and the second light blocking pattern are arranged on a surface, proximal to the light adjusting structure, of the first light blocking pattern side by side and are in contact with each other.

6. The display panel of claim 5 , wherein the light reflecting element comprises: a body and a reflective layer, a surface, away from the first light blocking pattern, of the body is a second inclined surface, a plane where the second inclined surface is located is intersected with the plane where the first light blocking pattern is located, the second inclined surface faces the light extracting opening located in the sub-pixel area where the light reflecting element is located, and the reflective layer is arranged on the second inclined surface.

7. The display panel of claim 6 , wherein the body, the first light blocking pattern, and the second light blocking pattern are integrally formed as a single piece.

8. The display panel of claim 1 , wherein the light adjusting structure comprises a liquid crystal layer, the display structure layer further comprises a base substrate, a first electrode layer and a second electrode layer;
the first electrode layer is positioned on a side, proximal to the liquid crystal layer, of the base substrate, the black matrix and the reflection matrix are positioned on a side, proximal to the liquid crystal layer, of the first electrode layer, and the second electrode layer is positioned on a side, away from the black matrix, of the liquid crystal layer;
the light absorption structure layer is positioned between the second electrode layer and the liquid crystal layer.

9. The display panel of claim 1 , wherein the display structure layer further comprises: a color filter matrix disposed on a side of the light adjusting structure away from the reflection matrix, and the color filter matrix is configured to filter light emitted from the preset position and/or to filter light reflected by a surface of the reflection matrix.

10. The display panel of claim 1 , wherein a protective layer is disposed between the second electrode layer and the light absorption structure layer, and the protective layer is in contact with the light absorption structure layer, and the protective layer is configured to prevent material residue from occurring in a non-pattern area during a process of forming a pattern of the light absorption structure layer through a patterning process.

11. The display panel of claim 9 , wherein a material of the light absorption structure layer comprises carbon; and
a material of the protective layer comprises silicon oxide.

12. The display panel of claim 1 , wherein a scattering layer is provided on a side of the light guide structure layer away from the light adjusting structure.

13. The display panel of claim 1 , wherein a side of the scattering layer away from the light guide structure layer is provided with a protective layer.

14. A display device, comprising: a collimated light source and the display panel as claimed in claim 1 , wherein a light outlet of the collimated light source is arranged opposite to a light inlet of the light guide structure layer.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Yue Yang
• Wang Qian
• Yang Tong
• Dong Liwen
• Shu Shi
• Yu Yong
• Yao Qi
• Huang Haitao
• Li Xiang
• Xu Chuanxiang
• Tan Jifeng

Classifications

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/133606 Primary

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title