Color filter and liquid crystal panel

Patent metadata

Field	Value
Publication number	US-9740072-B2
Application number	US-201514777523-A
Country	US
Kind code	B2
Filing date	Jun 24, 2015
Priority date	Jun 8, 2015
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

The present invention provides a color filter and a liquid crystal display. The color filter comprises a substrate, and a color resist layer and a black matrix positioned on the substrate, and the color resist layer comprises a plurality of pixel areas aligned in array, and the plurality of pixel areas are separated by the black matrix, and the pixel area comprises a sub pixel main area and a sub pixel sub area, and two sides of the sub pixel sub area are respectively provided with a first transparent electrode and a second transparent electrode electrically coupled thereto; the sub pixel sub area is made by electrochromic material, and by adjusting voltage signals applied to the two sides of the sub pixel sub area with the first transparent electrode and the second transparent electrode, color variation of the sub pixel sub area is controlled to achieve switch of the color filter between high color saturation and high brightness display modes. The liquid crystal panel of the present invention is provided with the color filter capable of achieving switch of the color filter between high color saturation and high brightness display modes to satisfy the display requirement of high color saturation and high brightness at the same time.

First claim

What is claimed is:

1. A color filter, comprising a substrate, and a color resist layer and a black matrix positioned on the substrate, and the color resist layer comprises a plurality of pixel areas aligned in array, and the plurality of pixel areas are separated by the black matrix, and the pixel area comprises a sub pixel main area and a sub pixel sub area, and two sides of the sub pixel sub area are respectively provided with a first transparent electrode and a second transparent electrode electrically coupled thereto;
the sub pixel sub area is made by electrochromic material, and by adjusting voltage signals applied to the two sides of the sub pixel sub area with the first transparent electrode and the second transparent electrode, color variation of the sub pixel sub area is controlled to achieve switch of the color filter between high color saturation and high brightness display modes.

2. The color filter according to claim 1 , wherein the electrochromic material is at least one of n-type metal oxide and cathodic decolorization conducting polymer.

3. The color filter according to claim 2 , wherein the cathodic decolorization conducting polymer is compound based on viologen group, compound based on phthalate, compound based on pyridine or compound based on anthraquinone.

4. The color filter according to claim 1 , wherein the electrochromic material is at least one of p-type metal oxide and anodic decolorization conducting polymer.

5. The color filter according to claim 4 , wherein the anodic decolorization conducting polymer is compound based on aniline, compound based on amino quinones, organic compound based on rare earth elements or compound based on dibenzo-p-dioxins.

6. The color filter according to claim 1 , wherein the sub pixel sub area is made by vacuum sputter deposition, chemical polymerization or electrochemical polymerization.

7. The color filter according to claim 1 , wherein material of the sub pixel main area is a mixture of dye and photoresist; a manufacture method of the sub pixel main area is: dispersing the dye in the photoresist to manufacture a photoresist mixture with color, and coating the photoresist mixture with color on the substrate, and then performing photolithography processes of exposure and development.

8. The color filter according to claim 1 , wherein the sub pixel sub area shows another specific color different from the sub pixel main area in condition of not being applied with the voltage signal, and appears to be transparent and shows no color in condition of being applied with the voltage signal.

9. The color filter according to claim 1 , wherein the sub pixel sub area appears to be transparent and shows no color in condition of not being applied with the voltage signal, and shows another specific color different from the sub pixel main area in condition of being applied with the voltage signal.

10. A liquid crystal panel, comprising the color filter according to claim 1 .

11. A color filter, comprising a substrate, and a color resist layer and a black matrix positioned on the substrate, and the color resist layer comprises a plurality of pixel areas aligned in array, and the plurality of pixel areas are separated by the black matrix, and the pixel area comprises a sub pixel main area and a sub pixel sub area, and two sides of the sub pixel sub area are respectively provided with a first transparent electrode and a second transparent electrode electrically coupled thereto;
the sub pixel sub area is made by electrochromic material, and by adjusting voltage signals applied to the two sides of the sub pixel sub area with the first transparent electrode and the second transparent electrode, color variation of the sub pixel sub area is controlled to achieve switch of the color filter between high color saturation and high brightness display modes;
wherein the sub pixel sub area is made by vacuum sputter deposition, chemical polymerization or electrochemical polymerization;
wherein material of the sub pixel main area is a mixture of dye and photoresist; a manufacture method of the sub pixel main area is: dispersing the dye in the photoresist to manufacture a photoresist mixture with color, and coating the photoresist mixture with color on the substrate, and then performing photolithography processes of exposure and development;
wherein the sub pixel sub area shows another specific color different from the sub pixel main area in condition of not being applied with the voltage signal, and appears to be transparent and shows no color in condition of being applied with the voltage signal.

12. The color filter according to claim 11 , wherein the electrochromic material is at least one of n-type metal oxide and cathodic decolorization conducting polymer.

13. The color filter according to claim 12 , wherein the cathodic decolorization conducting polymer is compound based on viologen group, compound based on phthalate, compound based on pyridine or compound based on anthraquinone.

14. The color filter according to claim 11 , wherein the electrochromic material is at least one of p-type metal oxide and anodic decolorization conducting polymer.

15. The color filter according to claim 14 , wherein the anodic decolorization conducting polymer is compound based on aniline, compound based on amino quinones, organic compound based on rare earth elements or compound based on dibenzo-p-dioxins.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Yu Xiaoping
• Chen Hsiaohsien

Classifications

• G02B5/201

  in the form of arrays · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F2001/1515

  Physics · mapped topic

• G02F1/163

  Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title