Patent ID: 8497053

Claim:
A pigment dispersion composition comprising a pigment, a binder resin, a solvent, and a dispersing agent, wherein the dispersing agent comprises a first dispersing agent represented by the following Formula 1 and a second dispersing agent represented by the following Formula 2, and wherein the first dispersing agent is mixed with the second dispersing agent in a weight ratio ranging from about 70:30 to about 90:10: wherein, in the above formulae, R 1 to R 6 are independently hydrogen or alkyl, R 7 to R 13 are selected from the group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted arylalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted cycloalkynyl, substituted or unsubstituted alkoxy, substituted or unsubstituted alkylamino, substituted or unsubstituted alkoxyamino, and substituted or unsubstituted alkanol, m is in the range of about 30 to about 70 mol %, n is in the range of about 30 to about 70 mol %, and k and k′ are independently integers ranging from 0 to 18.