Composition for black matrix and method for preparing the same, display substrate and display device

Patent metadata

Field	Value
Publication number	US-2018188621-A1
Application number	US-201715724954-A
Country	US
Kind code	A1
Filing date	Oct 4, 2017
Priority date	Jan 3, 2017
Publication date	Jul 5, 2018
Grant date	—

Abstract

Disclosed are a composition for a black matrix and a method for preparing the same, a display substrate, and a display device. The composition for a black matrix comprises an adhesive, a light-shielding material, a solvent, a first dye and a monomer, wherein the light-shielding material comprises light-shielding particles, and an electrically insulating material and a base material with which the light-shielding particles are coated sequentially; and the adhesive, the first dye and the light-shielding material are bonded by the monomer.

First claim

1 . A composition for a black matrix, comprising: an adhesive, a light-shielding material, a solvent, a first dye and a monomer,
wherein the light-shielding material comprises light-shielding particles, and an electrically insulating material and a base material with which the light-shielding particles are coated sequentially; and the adhesive, the first dye and the light-shielding material are bonded by the monomer.

2 . The composition according to claim 1 , comprising about 12 wt % to about 25 wt % of the adhesive, about 20 wt % to about 45 wt % of the light-shielding material, about 10 wt % to about 45 wt % of the solvent, about 5 wt % to about 10 wt % of the first dye, and about 5 wt % to about 10 wt % of the monomer.

3 . The composition according to claim 1 , further comprising a second dye dissolved in the solvent.

4 . The composition according to claim 1 , wherein the light-shielding particles include at least one of carbon black particles or titanium black particles.

5 . The composition according to claim 1 , wherein the electrically insulating material is an electrically insulating organic material which includes at least one of a phenolic resin, a melamine resin, a polyester resin, an epoxy resin, a diphenyl ether resin, a silicone resin, or an organofluorine resin.

6 . The composition claim 1 , wherein the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide.

7 . The composition according to claim 1 , wherein the adhesive comprises at least one of an acrylic resin or a polyimide resin.

8 . The composition according to claim 1 , wherein the solvent comprises at least one of propylene glycol methyl ether propionate, ethylene glycol monomethyl ether acetate, 1,2-propylene glycol methyl ether acetate, ethylene glycol diethyl ether, N-methyl-2-pyrrolidone, cyclohexanone, or N,N-dimethylformamide.

9 . The composition according to claim 1 , wherein the monomer comprises at least one of trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), dipentaerythritol hexaacrylate (DPHA), dipentaeritritol pentaacrylate (DPPA) or pentaerythritol triacrylate (PETA).

10 . A method for preparing a composition for a black matrix, comprising:
providing light-shielding particles; coating the light-shielding particles with an electrically insulating material and a base material sequentially to form a light-shielding material; dispersing the light-shielding material and an adhesive in a solvent to prepare a dispersion; and mixing a first dye and a monomer with the dispersion to form the composition for a black matrix; wherein the adhesive, the first dye and the light-shielding material are bonded by the monomer.

11 . The method according to claim 10 , further comprising dissolving a second dye in the solvent.

12 . The method according to claim 10 , wherein the light-shielding particles include at least one of carbon black particles or titanium black particles.

13 . The method according to claim 10 , wherein the monomer comprises at least one of trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), dipentaerythritol hexaacrylate (DPHA), dipentaeritritol pentaacrylate (DPPA) or pentaerythritol triacrylate (PETA).

14 . A display substrate comprising a black matrix, wherein the black matrix is prepared from the composition according to claim 1 .

15 . A display device, comprising the display substrate according to claim 14 .

16 . The method according to claim 10 , wherein the composition for a black matrix comprises about 12 wt % to about 25 wt % of the adhesive, about 20 wt % to about 45 wt % of the light-shielding material, about 10 wt % to about 45 wt % of the solvent, about 5 wt % to about 10 wt % of the first dye, and about 5 wt % to about 10 wt % of the monomer.

17 . The method according to claim 10 , wherein the electrically insulating material is an electrically insulating organic material which includes at least one of a phenolic resin, a melamine resin, a polyester resin, an epoxy resin, a diphenyl ether resin, a silicone resin, or an organofluorine resin.

18 . The method according to claim 10 , wherein the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide.

19 . The method according to claim 10 , wherein the adhesive comprises at least one of an acrylic resin or a polyimide resin.

20 . The method according to claim 10 , wherein the solvent comprises at least one of propylene glycol methyl ether propionate, ethylene glycol monomethyl ether acetate, 1,2-propylene glycol methyl ether acetate, ethylene glycol diethyl ether, N-methyl-2-pyrrolidone, cyclohexanone, or N,N-dimethylformamide.

Assignees

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

Inventors

• Qi Pengyu
• Wang Dong
• Guo Yangchen

Classifications

• G02F2202/022

  polymeric · CPC title

• G02F2202/04

  dye · CPC title

• G03F7/032 Primary

  with binders · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G03F7/00

  Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor (using photoresist structures for special production processes, see the relevant places, e.g. B44C, H10P76/00, H05K) · CPC title