Color changing device, display module, manufacturing method thereof and display control method

Patent metadata

Field	Value
Publication number	US-10330964-B2
Application number	US-201815928446-A
Country	US
Kind code	B2
Filing date	Mar 22, 2018
Priority date	Aug 18, 2017
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The present disclosure provides a color changing device, a display module, a manufacturing method thereof, and a display control method. The color changing device includes a plurality of color changing blocks and a color control circuit connected to the plurality of color changing blocks and configured to control each color changing block to exhibit a corresponding color. Each color changing block includes a transparent electrode, a transparent insulation layer arranged on the transparent electrode and provided with a groove, gold nanoparticles filled in the groove and electrically connected to the transparent electrode, and a plurality of electrode sheets coated with silver ions and covering the groove. The electrode sheets of different color changing blocks are insulated from each other.

First claim

What is claimed is:

1. A color changing device, comprising a plurality of color changing blocks and a color control circuit connected to the plurality of color changing blocks and configured to control each color changing block to exhibit a corresponding color, wherein
each color changing block comprises a transparent electrode, a transparent insulation layer arranged on the transparent electrode and provided with a groove, gold nanoparticles filled in the groove and electrically connected to the transparent electrode, and a plurality of electrode sheets coated with silver ions and covering the groove; and
the electrode sheets of different color changing blocks are insulated from each other.

2. The color changing device according to claim 1 , wherein the transparent electrodes of all the color changing blocks are formed into one piece.

3. The color changing device according to claim 1 , wherein the color control circuit is electrically connected to the transparent electrode and the electrode sheet, and further configured to apply a predetermined voltage between the electrode sheet and the transparent electrode within a corresponding power-on time period in accordance with a color to be exhibited by each color changing block.

4. The color changing device according to claim 3 , wherein the color control circuit comprises:
a power source circuit configured to provide a power source;
a plurality of light supplement circuit configured to provide a supplementary light source;
a plurality of color sensors;
a single chip microcomputer; and
a plurality of time controllers,
wherein each color sensor is configured to identify a color and transmit color information about the identified color to the single chip microcomputer,
the single chip microcomputer is configured to transmit the color information to a corresponding time controller, and
the time controller is configured to apply the predetermined voltage between the electrode sheet and the transparent electrode of the corresponding color changing block within the corresponding power-on time period in accordance with the color information received from the single chip microcomputer.

5. The color changing device according to claim 4 , wherein the light supplement circuits correspond to the color sensors respectively, and each light supplement circuit comprises at least one white light-emitting diode (LED) spaced apart from the corresponding color sensor at a predetermined distance.

6. A display module, comprising an array substrate, a color filter substrate arranged opposite to the array substrate to form a cell, and the color changing device according to claim 4 , wherein transparent electrodes of color changing blocks of the color changing device are arranged on a surface of the color filter substrate away from the array substrate;
color sensors of a color control circuit of the color changing device correspond to subpixels of the display module respectively;
the color changing blocks correspond to the subpixels of the display module respectively; and
each color sensor is arranged at a light-exiting side of the corresponding subpixel and configured to collect a color of the subpixel.

7. The display module according to claim 6 , wherein the color control circuit of the color changing device comprises light supplement circuits corresponding to the color sensors respectively, and each light supplement circuit comprises at least a white Light-Emitting Diode (LED) spaced apart from the corresponding color sensor at a predetermined distance.

8. A display control method for the display module according to claim 6 , comprising steps of:
collecting, by a color sensor, a color of a subpixel;
calculating, by a color control circuit, a power-on time period within which a predetermined voltage is to be applied between a corresponding electrode sheet and a corresponding transparent electrode in accordance with the color collected by the color sensor; and
applying, by the color control circuit, the predetermined voltage between the corresponding electrode sheet and the corresponding transparent electrode within the corresponding power-on time period.

9. The color changing device according to claim 1 , wherein the electrode sheet is made of gel.

10. The color changing device according to claim 1 , wherein the transparent insulation layer is made of silicon dioxide.

11. A display module, comprising:
a liquid crystal display, the liquid crystal display comprising an array substrate, a color filter substrate arranged opposite to the array substrate to form a cell, and a liquid crystal layer arranged between the array substrate and the color filter substrate, the liquid crystal display being provided with a plurality of pixel units arranged in a matrix form, each pixel unit comprising a plurality of subpixel units in different colors, each subpixel comprising a color filter block arranged on the color filter substrate;
a transparent electrode arranged at a side of the color filter substrate away from the array substrate;
a plurality of color sensors arranged between the color filter substrate and the transparent electrode, corresponding to the color filter blocks on the color filter substrate respectively, and configured to collect a color of a corresponding subpixel;
a transparent insulation layer arranged at a side of the transparent electrode away from the color sensors and provided with grooves corresponding to the color filter blocks on the color filter substrate respectively and spaced apart from each other;
gold nanoparticles filled in the grooves and electrically connected to the transparent electrode;
a plurality of electrode sheets covering the grooves, coated with silver ions and insulation from each other;
a single chip microcomputer; and
a plurality of time controllers electrically connected to the transparent electrode and the electrode sheets,
wherein each color sensor is configured to transmit color information about the collected color of each subpixel to the single chip microcomputer,
the single chip microcomputer is configured to transmit the color information to the corresponding time controller, and
each time controller is configured to apply a predetermined voltage between the transparent electrode and the electrode sheet corresponding to the subpixel within a power-on time period corresponding to the color in accordance with the color information received from the single chip machine.

12. The display module according to claim 11 , further comprising a plurality of light supplement circuits corresponding to the color sensors respectively, wherein each light supplement circuit comprises at least one white Light-Emitting Diode (LED) spaced apart from the corresponding color sensor at a predetermined distance.

13. The display module according to claim 11 , further comprising a power source circuit configured to provide a power source for the color sensors, the light supplement circuits, the single chip microcomputer and the time controllers.

14. The display module according to claim 11 , wherein the transparent insulation layer is made of silicon dioxide.

15. A display control method for the display module according to claim 11 , comprising steps of:
collecting a color of a subpixel;
calculating a power-on time period within which a predetermined voltage is to be applied between a corresponding electrode sheet and a corresponding transparent electrode in accordance with the color; and
applying the predetermined voltage between the corresponding electrode sheet and the corresponding transparent electrode within the corresponding power-on time p

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Li Yanqiu
• Wang Hetao

Classifications

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F2202/16

  conductive · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F2001/133612

  Physics · mapped topic