Patent ID: 8282862

Claim:
A triphenylmethane-based complex dye represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, R 1 to R 17 are each independently hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a sulfonate group, a hydroxyl group, or a substituent represented by the following Chemical Formula 3, provided that at least two of R 1 to R 17 are a sulfonate group or a substituent represented by the following Chemical Formula 3, R 18 to R 31 are each independently hydrogen or a substituted or unsubstituted C1 to C20 alkyl group, R 32 to R 35 are each independently hydrogen or a substituted or unsubstituted C1 to C5 alkyl group, R 36 is a substituted or unsubstituted C1 to C20 alkyl group, and x and y are each an integer of about 1 to about 3, wherein, in Chemical Formula 3, n is an integer of about 1 to about 5.