Patent ID: 8057979

Claim:
A photosensitive paste composition, comprising: a black pigment comprising black pigment nanoparticles; a cyclic acid anhydride; an inorganic binder; and an organic vehicle, wherein the black pigment comprises a first black pigment and a second black pigment, and the first pigment and the second pigment are different in an average particle size, a minimal particle size, and a maximal particle size, wherein the first black pigment has an average particle size of 0.5 to 5.0 Î¼m, a minimal particle size of 0.1 Î¼m or more, and a maximal particle size of 10 Î¼m or less, and the second black pigment has an average particle size of 5 to 50 nm, a minimal particle size of 1 nm or more, and a maximal particle size of 100 nm or less, and wherein the black pigment comprised of the first black pigment and the second black pigment is in an amount of 5 to 100 parts by weight, the cyclic acid anhydride is in an amount of 1 to 10 parts by weight, and the organic vehicle is in an amount of 20 to 40 parts by weight, based on 100 parts by weight of the inorganic binder.