Patent ID: 7311953

Claim:
A colored composition for color filter comprising a base polymer containing a polyamicacid whose light transmittance decreases by 2% or less in the visible region (wavelength: 400 nm to 800 nm), at least one coloring agent and at least one solvent, wherein a pigment derivative having a structure represented by the following general formula (I) is used as said coloring agent: A(B) x (C) y (I) wherein x is a number of 1 to 4; y is a number of 0 to 8, and x+y is greater than or equal to 1; A is a coloring group derived from quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine or diketopyrrolopyrrole; B is a substituent bonded to a nitrogen atom contained in A, by the formation of a carbamate, namely, B is represented by the following structural formula (1): wherein R 1 is and substituted aryl groups; and C is a side chain group bonded to an aromatic ring contained in A and is selected from halogen atoms, cyano group, alkyl groups (—(CH 2 ) n CH 3 wherein n is an integer of 0 to 20), alkoxyl groups (—O—(CH 2 ) m CH 3 wherein m is an integer of 0 to 20) and oxymethylene groups (—O—(CH 2 —O) k CH 3 wherein k is an integer of 0 to 20), and of these, the alkyl groups and the alkoxyl groups may contain a functional group for polymerization and addition.