Display substrate and method of manufacturing the same, and display panel

Patent metadata

Field	Value
Publication number	US-10859867-B2
Application number	US-201715750747-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Nov 15, 2016
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

Embodiments of the present disclosure provide a display substrate and a method of manufacturing the same, and a display panel including the display substrate. The display substrate includes a base substrate and an optical film layer formed on the base substrate, and the optical film layer is configured to filter out light having a wavelength in a selected wavelength range. The display substrate may be an array substrate or a color substrate.

First claim

What is claimed is:

1. A display substrate, comprising:
a base substrate; and
an optical film layer formed on the base substrate,
wherein, the optical film layer is configured to filter out light of secondary color between primary colors while allowing light of other wavelength ranges to be transmitted through the optical film layer;
wherein the optical film layer comprises a first optical film layer and a second optical film layer;
wherein, one of the first optical film layer and the second optical film layer is configured to filter out light in a selected wavelength range having a central wavelength of 580 nm and a full width at half maximum in a range from 25 nm to 55 nm, and the other of the first optical film layer and the second optical film layer is configured to filter out light in a selected wavelength range having a central wavelength of 485 nm and a full width at half maximum in a range from 25 nm to 55 nm.

2. The display substrate according to claim 1 , wherein the optical film layer comprises a multilayer film comprising at least two material layers which have different refractive indexes.

3. The display substrate according to claim 2 , wherein the multilayer film comprises first material layers having a first refractive index and second material layers having a second refractive index, the first material layers and the second material layers being alternately superposed on top of each other.

4. The display substrate according to claim 2 , wherein the number of layers of the multilayer film is in a range from 5 to 50.

5. The display substrate according to claim 1 , wherein a material forming the optical film layer has a refractive index in a range from 1.2 to 4.

6. The display substrate according to claim 1 , wherein the display substrate is an array substrate.

7. The display substrate according to claim 6 , wherein the optical film layer is formed from a same material as a gate insulation layer and/or a passivation layer of the array substrate.

8. The display substrate according to claim 6 , wherein the array substrate further comprises a gate insulation layer and/or a passivation layer, and the optical film layer is a layer different from the gate insulation layer and/or the passivation layer.

9. The display substrate according to claim 1 , wherein the display substrate is a color substrate, and the optical film layer is located at a position corresponding to a selected primary color sub-pixel.

10. The display substrate according to claim 1 , wherein wavelength range of the light of secondary color has a central wavelength of 580 nm or 485 nm, and a full width at half maximum in a range from 25 nm to 55 nm.

11. A display panel, comprising an array substrate and a color substrate arranged opposite to each other, wherein, at least one of the array substrate and the color substrate is the display substrate of claim 1 .

12. The display panel according to claim 11 , wherein the array substrate comprises a first base substrate and the first optical film layer on the first base substrate, and the color substrate comprises a second base substrate and the second optical film layer on the second base substrate.

13. The display panel according to claim 11 , wherein, the array substrate comprises a first base substrate, and the first optical film layer and the second optical film layer provided on the first base substrate.

14. A method of manufacturing a display substrate, comprising steps of:
providing a base substrate; and
forming an optical film layer on the base substrate,
wherein the optical film layer is configured to filter out light of secondary color between primary colors while allowing light in of other wavelength ranges to be transmitted through the optical film layer;
wherein the step of forming an optical film layer on the base substrate comprises:
forming the optical film layer on the base substrate through a deposition process.

15. The method according to claim 14 , wherein the base substrate is a base substrate of an array substrate.

16. The method according to claim 15 , wherein the optical film layer is formed from a same material as a gate insulation layer and/or a passivation layer of the array substrate.

17. The method according to claim 15 , further comprising a step of:
forming a gate insulation layer and/or a passivation layer, which is different from the optical film layer, on the base substrate of the array substrate.

18. The method according to claim 14 , wherein the base substrate is a base substrate of a color substrate, and the method further comprises a step of: forming a plurality of primary color filters on the base substrate of the color substrate, and
wherein the step of forming an optical film layer on the base substrate of the color substrate comprises: forming the optical film layer on a selected primary color filter by using a mask; or
wherein the step of forming an optical film layer on the base substrate of the color substrate comprises: forming the optical film layer on all primary color filters, and etching off, by using an etching process, portions of the optical film layer on other primary color filters except the selected primary color filter so as to remain a portion of the optical film layer on the selected primary color filter.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Yingyi
• Gao Jian

Classifications

• G02F1/133516 Primary

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title

• G02F1/133521

  Interference filters · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G06F1/1609

  to support filters or lenses · CPC title

• G02F1/1303

  Apparatus specially adapted to the manufacture of LCDs · CPC title