Patent ID: 7794902

Claim:
A black matrix formed by applying a photosensitive coating on a clear substrate, exposing the coating imagewise, and developing and drying the coating, wherein the photosensitive coating comprises at least one modified pigment product comprising: a) a pigment having attached at least one organic ionic group and at least one amphiphilic counterion, wherein said amphiphilic counterion has a charge opposite to that of the organic ionic group; or b) a pigment having attached at least one organic group represented by the formula —X-Sp-[A] p R, —X-Sp-[Vinyl]R, —X-Sp-[EI]R, or —X-Sp-[SMA]R, wherein X, which is directly attached to the pigment, represents an arylene, heteroarylene, or alkylene group, Sp represents a spacer group, p is an integer of from 1 to 500, A represents an alkylene oxide group of from about 1 to about 12 carbons and can be the same or different when p is greater than 1, Vinyl represents an acrylic or styrenic homo- or copolymer comprising repeating substituted or unsubstituted acrylic or styrene monomer units, EI represents an alkyleneimine-based polymer or copolymer, R represents hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and SMA represents a styrene-maleic anhydride polymer or derivative.