Black photoresist composition, method of preparing the same, color filter, and display device

Patent metadata

Field	Value
Publication number	US-2016259241-A1
Application number	US-201314387770-A
Country	US
Kind code	A1
Filing date	Dec 18, 2013
Priority date	Apr 28, 2013
Publication date	Sep 8, 2016
Grant date	—

Abstract

A black photoresist composition capable of emitting infrared light, a method of preparing the black photoresist composition capable of emitting infrared light, a color filter comprising a Black Matrix formed from the black photoresist composition capable of emitting infrared light, and a display device including the color filter. The black photoresist composition capable of emitting infrared light includes, based on the total weight of the composition, 2% to 15% of a color mixed material, 30% to 90% of a solvent, 2% to 20% of an alkali-soluble resin, 2% to 20% of an ethenoid unsaturated monomer, 0.01% to 1% of photoinitiator, and 0.005% to 0.02% of other additives; wherein the color mixed material includes a colorant and a surface-modified infrared light-emitting material at a weight ratio of 19:1 to 1:1.

First claim

1 . A black photoresist composition capable of emitting infrared light, wherein the black photoresist composition capable of emitting infrared light comprising, based on the total weight of the composition:
2% to 15% of a color mixed material, 30% to 90% of a solvent, 2% to 20% of an alkali-soluble resin, 2% to 20% of an ethenoid unsaturated monomer. 0.01% to 1% of a photoinitiator, and 0.005% to 0.02% of other additives; wherein, the color mixed material comprises a colorant and surface-modified infrared light-emitting material at a weight ratio of 19:1 to 1:1.

2 . The black photoresist composition capable of emitting infrared light of claim 1 , wherein the color mixed material comprises the colorant and the surface-modified infrared light-emitting material at a weight ratio of 6:1 to 1:1.

3 . The black photoresist composition capable of emitting infrared light of claim 1 , wherein the infrared light-emitting material is one or more selected from the group consisting of tourmaline, biological carbon, far-infrared ceramics, bowlder powders, alumina, copper oxide, silver oxide and silicon carbide.

4 . The black photoresist composition capable of emitting infrared light of claim 3 , wherein the infrared light-emitting material is subject to surface modification with a polymeric material.

5 . The black photoresist composition capable of emitting infrared light of claim 4 , wherein the polymeric material is a methyl methacrylate-co-styrene-co-maleimide copolymer.

6 . The black photoresist composition capable of emitting infrared light of claim 1 , wherein the surface-modified infrared light-emitting material has a mean particle diameter of 1 nm to 200 nm.

7 . The black photoresist composition capable of emitting infrared light of claim 3 , wherein the tourmaline is black tourmaline having a density of 3.06 to 3.26 g/cm 3 and a refraction index of 1.62 to 1.64.

8 . A method of preparing a black photoresist composition capable of emitting infrared light comprising:
grinding and dispersing an infrared light-emitting material into a solvent to give a nano-dispersion comprising infrared light-emitting material nanoparticles having a mean particle diameter of 1 nm to 200 nm; modifying the infrared light-emitting material nanoparticles in the nano-dispersion with a polymeric material, followed by removing the solvent, to give polymeric material-modified infrared light-emitting material nanoparticles; mixing the polymeric material modified infrared light-emitting material nanoparticles with a colorant to give a color mixed material, and
mixing the color mixed material with a solvent, an alkali-soluble resin, an ethenoid an unsaturated monomer, a photoinitiator, and other additives, to give the black photoresist composition capable of emitting infrared light.

9 . The method of preparing the black photoresist composition capable of emitting infrared light of claim 8 , wherein the infrared light-emitting material is one or more selected from the group consisting of tourmaline, biological carbon, far-infrared ceramics, bowlder powders, alumina, copper oxide, silver oxide and silicon carbide.

10 . The method of preparing the black photoresist composition capable of emitting infrared light of claim 8 , wherein the polymeric material is a methyl methacrylate-co-styrene-co-maleimide copolymer.

11 . A color filter, comprising a Black Matrix formed from the black photoresist composition capable of emitting infrared light of claim 1 .

12 . A display device comprising the color filter of claim 11 .

13 . The color filter of claim 11 , wherein the color mixed material comprises the colorant and the surface-modified infrared light-emitting material at a weight ratio of 6:1 to 1:1.

14 . The color filter of claim 11 , wherein the infrared light-emitting material is one or more selected from the group consisting of tourmaline, biological carbon, far-infrared ceramics, bowlder powders, alumina, copper oxide, silver oxide and silicon carbide.

15 . The color filter of claim 14 , wherein the infrared light-emitting material is subject to surface modification with a polymeric material.

16 . The color filter of claim 15 , wherein the polymeric material is a methyl methacrylate-co-styrene-co-maleimide copolymer.

17 . The color filter of claim 11 , wherein the surface-modified infrared light-emitting material has a mean particle diameter of 1 nm to 200 nm.

18 . The color filter of claim 14 , wherein the tourmaline is black tourmaline having a density of 3.06 to 3.26 g/cm 3 and a refraction index of 1.62 to 1.64.

Assignees

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

Inventors

• Yang Jiuxia
• Bai Feng
• Zhao Yiming
• Sun Xiao
• Bai Bing

Classifications

• G03F7/0007 Primary

  Filters, e.g. additive colour filters; Components for display devices · CPC title

• G03F7/028

  with photosensitivity-increasing substances, e.g. photoinitiators · CPC title

• G02B5/208

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title

• G02B5/201

  in the form of arrays · CPC title

• G03F7/027

  Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (G03F7/075 takes precedence) · CPC title