Patent ID: 7582230

Claim:
A colour filter comprising areas of at least three different colours, wherein at least one area has its maximal visible light transmittance at a wavelength of from 520 to 540 nm and comprises a pigmentary compound of formula dispersed in a high molecular weight material, in which formula (I) R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are each independently from the others selected from the group consisting of H, OH and R 17 , R 18 , R 19 and R 20 are H, m is 0 or 1, R 21 is 2 H, (CH 2 ) 3 , (CH 2 ) 4 , (CH) 4 , (CH) 2 CH 2 , (CH) 2 (CH 2 ) 2 or CH 2 (CH) 2 CH 2 , R 22 and R 23 are independently from each other H, OH, NO 2 , CONHR 24 or NHCOR 24 , R 24 is methyl, ethyl or n-propyl, and M is 2 H, Cu, Co or Ni, with the proviso that one of R 1 , R 2 , R 3 and R 4 , none or one of R 5 , R 6 , R 7 and R 8 , none or one of R 9 , R 10 , R 11 and R 12 , and none or one of R 13 , R 14 , R 15 and R 16 are selected from the group consisting of OH and and all other R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are H.