| abstract |
A color converter may include (a) a polyethylene terephthalate matrix material; and (b) an organic fluorescent dye selected from a compound of formulae (I.a), (I.b), (I.c) or mixtures thereof n n n n n n n n n n wherein EWG1 and EWG2 are CN, CH(O), C(O)R 13 , OC(O)R 13 , COOR 14 , CH(COOR 14 ) 2 , SO 2 R 14 , C(O)NR 15 R 16 , SO 2 NR 15 R 16 , or C 1 -C 20 -fluoroalkyl; R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7a , R 7b , R 7c , R 13 , R 14 , R 15 and R 16 are as defined in the claims and in the description. A backlight unit, a liquid crystal display module, and a light emitting device may include such a color converter. In compounds of formula (I.b) EWG1 and EWG2 may be CN. |