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

Patent metadata

Field	Value
Publication number	US-10606137-B2
Application number	US-201715724954-A
Country	US
Kind code	B2
Filing date	Oct 4, 2017
Priority date	Jan 3, 2017
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

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

The invention claimed is:

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 a light-shielding particle, an electrically insulating material, and a base material;
wherein the light-shielding particle is coated sequentially with the electrically insulating material, and the base material;
wherein the base material is acrylic resin powder or polymethyl methacrylate;
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; or the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide;
wherein the adhesive, the first dye and the light-shielding material are bonded by the monomer;
wherein the composition 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, based on the composition for the black matrix; and
wherein the adhesive comprises at least one of an acrylic resin or a polyimide resin.

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

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

4. 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.

5. 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).

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

7. A display device, comprising the display substrate according to claim 6 .

8. The composition according to claim 1 , wherein the light-shielding particle is carbon black, and the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide.

9. 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; the base material is acrylic resin powder or polymethyl methacrylate; and
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; or the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide;
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; and
wherein the adhesive comprises at least one of an acrylic resin or a polyimide resin.

10. The method according to claim 9 , further comprising dissolving a second dye in the solvent.

11. The method according to claim 9 , wherein the light-shielding particles include at least one of carbon black particles or titanium black particles.

12. The method according to claim 9 , 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).

13. The method according to claim 9 , 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.

14. The method according to claim 9 , wherein the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide.

15. The method according to claim 9 , 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.

16. The method according to claim 9 , wherein the light-shielding particle is carbon black, and the electrically insulating material is an electrically insulating inorganic material which includes at least one of aluminum nitride, silicon nitride, or silicon carbide.

Assignees

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

Inventors

• Qi Pengyu
• Wang Dong
• Guo Yangchen

Classifications

• G02F2202/04

  dye · CPC title

• G02F2202/022

  polymeric · 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

• G02F1/133512 Primary

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

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title