Refractive index adjustment structure, color filter substrate, display panel and display apparatus

Patent metadata

Field	Value
Publication number	US-11249331-B2
Application number	US-201816304366-A
Country	US
Kind code	B2
Filing date	Mar 2, 2018
Priority date	Jul 6, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

Disclosed are a refractive index adjustment structure, a color filter substrate, a display panel and a display apparatus. The refractive index adjustment structure includes an adjustment layer and at least one electrode layer. The adjustment layer and the at least one electrode layer are provided in a stacked manner. The at least one electrode layer is configured to be loaded with an electric signal, and the electric signal is capable of adjusting a refractive index of the adjustment layer.

First claim

What is claimed is:

1. A color filter substrate, comprising a first base substrate, a color filter provided on the first base substrate, and a refractive index adjustment structure, light emitted from the color filter entering the refractive index adjustment structure, wherein the refractive index adjustment structure comprises an adjustment layer and at least one electrode layer, wherein the adjustment layer and the at least one electrode layer are provided in a stacked manner, and the at least one electrode layer is configured to be loaded with an electric signal, the electric signal being capable of adjusting a refractive index of the adjustment layer,
wherein in response to the at least one electrode layer being loaded with the electric signal, the refractive index of the adjustment layer is caused to gradually decrease or increase in a direction from an upper surface of the adjustment layer to a lower surface of the adjustment layer, such that refracted light continues to be deflected towards a same direction in the adjustment layer along a curve, and
wherein the adjustment layer is doped with magnetic particles or charged particles.

2. The color filter substrate of claim 1 , wherein the at least one electrode layer comprises a first electrode layer, and the adjustment layer is a first adjustment layer doped with magnetic particles; and
the first electrode layer is configured to generate a magnetic field based on the electric signal, and the magnetic field is capable of adjusting distribution of the magnetic particles in the first adjustment layer in a direction perpendicular to the first electrode layer.

3. The color filter substrate of claim 2 , wherein in response to the electric signal loaded onto the first electrode layer, a portion of the first adjustment layer close to the first electrode layer has a refractive index larger than a refractive index of a portion of the first adjustment layer away from the first electrode layer.

4. The color filter substrate of claim 2 , wherein in the absence of the electric signal in the first electrode layer, the magnetic particles are uniformly distributed in the first adjustment layer.

5. The color filter substrate of claim 1 , wherein the at least one electrode layer comprises a first electrode layer and a second electrode layer, the adjustment layer is a first adjustment layer doped with magnetic particles, the first adjustment layer is between the first electrode layer and the second electrode layer, and the electric signal is loaded onto the first electrode layer or the second electrode layer;
the first electrode layer is configured to generate a first magnetic field based on the electric signal, and the first magnetic field is capable of adjusting distribution of the magnetic particles in the first adjustment layer in a direction perpendicular to the first electrode layer; and
the second electrode layer is configured to generate a second magnetic field based on the electric signal, and the second magnetic field is capable of adjusting the distribution of the magnetic particles in the first adjustment layer in a direction perpendicular to the second electrode layer.

6. The color filter substrate of claim 5 , wherein in response to the electric signal loaded onto the first electrode layer, a portion of the first adjustment layer close to the first electrode layer has a refractive index larger than a refractive index of a portion of the first adjustment layer away from the first electrode layer; and in response to the electric signal loaded onto the second electrode layer, a portion of the first adjustment layer close to the second electrode layer has a refractive index larger than a refractive index of a portion of the first adjustment layer away from the second electrode layer.

7. The color filter substrate of claim 5 , wherein in the absence of the electric signal in both of the first electrode layer and the second electrode layer, the magnetic particles are uniformly distributed in the first adjustment layer.

8. The color filter substrate of claim 1 , wherein the at least one electrode layer comprises a third electrode layer and a fourth electrode layer, the adjustment layer is a second adjustment layer doped with charged particles, and the second adjustment layer is between the third electrode layer and the fourth electrode layer; and the electric signal comprises a first electric signal and a second electric signal, the third electric layer is configured to be loaded with the first electric signal and the fourth electrode layer is configured to be loaded with the second electric signal, the third electrode layer and the fourth electrode layer are configured to generate an electric field based on the first electric signal and the second electric signal, and the electric field is capable of adjusting distribution of the charged particles in the second adjustment layer in a direction perpendicular to the third electrode layer and fourth electrode layer.

9. The color filter substrate of claim 8 , wherein the charged particles are positively charged particles,
in a case where the first electric signal is higher than the second electric signal, a portion of the second adjustment layer close to the third electrode layer has a refractive index smaller than a refractive index of a portion of the second adjustment layer close to the fourth electrode layer; and
in a case where the first electric signal is lower than the second electric signal, the portion of the second adjustment layer close to the third electrode layer has a refractive index larger than a refractive index of the portion of the second adjustment layer close to the fourth electrode layer.

10. The color filter substrate of claim 8 , wherein the charged particles are negatively charged particles,
in a case where the first electric signal is lower than the second electric signal, a portion of the second adjustment layer close to the third electrode layer has a refractive index smaller than a refractive index of a portion of the second adjustment layer close to the fourth electrode layer; and
in a case where the first electric signal is higher than the second electric signal, the portion of the second adjustment layer close to the third electrode layer has a refractive index larger than a refractive index of the portion of the second adjustment layer close to the fourth electrode layer.

11. The color filter substrate of claim 8 , wherein in the absence of the first electric signal in the third electrode layer and the second electric signal in the fourth electrode layer, the charged particles are uniformly distributed in the second adjustment layer.

12. The color filter substrate of claim 1 , wherein the refractive index adjustment structure is between the color filter and the first base substrate.

13. The color filter substrate of claim 1 , wherein the refractive index adjustment structure is at a side of the first base substrate away from the color filter.

14. The color filter substrate of claim 1 , further comprising a polarizer, the polarizer is on a surface at a light exiting side of the first base substrate; and
the refractive index adjustment structure is between the polarizer and the first base substrate.

15. The color filter substrate of claim 1 , further comprising a polarizer, the polarizer is on a surface at a light exiting side of the first base substrate; and
the refractive index adjustment structure is at a side of the polarizer away from the first base substrate.

16. A display panel, comprising the color filter substrate according to claim 1 .

17. The displ

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Li Ning
• Jiang Jianming
• Gu Wei
• Wang Tengli
• Sun Daqing
• Ruan Ganlin

Classifications

• G02F1/1673 Primary

  by magnetophoresis · CPC title

• G02F1/1323 Primary

  Arrangements for providing a switchable viewing angle · CPC title

• G02F1/167

  by electrophoresis · CPC title

• G02F1/1347

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title