Photosensitive resin composition and color filter using the same

Patent metadata

Field	Value
Publication number	US-9994728-B2
Application number	US-201514840767-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Sep 25, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A photosensitive resin composition includes (A) a colorant including a copolymer represented by Chemical Formula 1 and a green pigment; (B) a binder resin; (C) a photopolymerizable monomer; (D) a photopolymerization initiator; and (E) a solvent, wherein the copolymer represented by Chemical Formula 1 is included in an amount of about 100 parts by weight to about 300 parts by weight based on about 100 parts by weight of the green pigment:

wherein a is an integer ranging from 1 to 100, b is an integer ranging from 1 to 100, and c is an integer ranging from 1 to 50. A color filter manufactured using the same is also provided.

First claim

What is claimed is:

1. A photosensitive resin composition comprising:
(A) a colorant consisting essentially of a copolymer represented by Chemical Formula 1 and a green pigment;
(B) a binder resin;
(C) a photopolymerizable monomer;
(D) a photopolymerization initiator; and
(E) a solvent,
wherein the copolymer represented by Chemical Formula 1 is included in an amount of about 100 parts by weight to about 300 parts by weight based on about 100 parts by weight of the green pigment:

wherein in Chemical Formula 1,
a is an integer ranging from 1 to 100, b is an integer ranging from 1 to 100, and c is an integer ranging from 1 to 50.

2. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 is included in an amount of about 100 parts by weight to about 250 parts by weight based on about 100 parts by weight of the green pigment.

3. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 is a yellow dye.

4. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 has a maximum absorption wavelength in a wavelength region of about 460 nm to about 560 nm, and transmittance of about 80% to about 100% in a wavelength region of about 560 nm to about 660 nm.

5. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 has a thermal decomposition temperature of about 250 ° C. to about 500 ° C.

6. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 has a weight average molecular weight of about 3,000 g/mol to about 50,000 g/mol.

7. The photosensitive resin composition of claim 1 , wherein the copolymer represented by Chemical Formula 1 has an acid value of about 20 mgKOH/g to about 200 mgKOH/g.

8. The photosensitive resin composition of claim 1 , wherein the green pigment comprises C.I. green pigment 7, C.I. green pigment 36 and/or C.I. green pigment 58.

9. The photosensitive resin composition of claim 1 , wherein the photosensitive resin composition comprises:
about 2 wt % to about 12 wt % of the colorant (A);
about 1 wt % to about 10 wt % of the binder resin (B);
about 2 wt % to about 20 wt % of the photopolymerizable monomer (C);
about 0.1 wt % to about 4 wt % of the photopolymerization initiator (D);
and a balance amount of the solvent (E).

10. The photosensitive resin composition of claim 1 , wherein the photosensitive resin composition further comprises malonic acid; 3-amino-1,2-propanediol; a coupling agent having a vinyl group or a (meth)acryloxy group; a leveling agent; a fluorine -based surfactant; and/or a radical polymerization initiator.

11. A color filter manufactured using the photosensitive resin composition of claim 1 .

12. The photosensitive resin composition of claim 1 , wherein the colorant (A) consists of a copolymer represented by Chemical Formula 1 and a green pigment.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Hyung Kyung-Hee
• Baek Taek-Jin
• Jeong Eui-June
• Jung Ju-Ho

Classifications

• C08L33/14

  of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen · CPC title

• G03F7/004

  Photosensitive materials (G03F7/12, G03F7/14 take precedence) · CPC title

• G03F7/032

  with binders · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title