Patent ID: 7312006
Filing Date: 2007-12-25
Classification: C08K,G02B,G02F

Abstract:
1. A pigment dispersion composition for a color filter comprising at least a chromatic organic pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, wherein the binder resin molecular weight is in a range from 10,000 to 50,000, and the reactive block has an unsaturated double bond in a reactive group as well as contains a carboxyl group, and wherein the pigment adsorbing block is a trunk polymer, the reactive block is a branch polymer, and the average particle size of the chromatic organic pigment is 0.15 μm or less.