公开(公告)号：US12071574B2

公开(公告)日：2024-08-27

申请号：US17253000

申请日：2019-06-18

Applicant: BASF SE

Inventor： Hannah Stephanie Mangold ,  Martin Koenemann ,  Maximilian Frank Halbauer ,  Sorin Ivanovici

IPC: C09K11/06 ,  C09B57/00 ,  C09K11/02 ,  F21V9/30 ,  F21V9/38 ,  G02F1/1335 ,  H01L33/50

CPC classification number: C09K11/06 ,  C09B57/00 ,  C09K11/02 ,  G02F1/133614 ,  H01L33/502 ,  C09K2211/1441 ,  F21V9/30 ,  F21V9/38 ,  G02F2202/046 ,  H01L2933/0091

Abstract: A color converter may include a polymeric matrix material and at least one organic fluorescent colorant of formula I.a, I.b, and/or I.c




wherein R1, R2, R3, R5, R6, R7 are H, C1-C20-alkyl or C6-C14-aryl-C1-C10-alkylene; R4a, R4b are fluorine, chlorine, cyano or OR10, R8a, R8b are C1-C20-alkyl; R8c is C1-C20-alkyl, C6-C10-aryl or C6-C10-aryl-C1-C10-alkylene, wherein the aryl moieties being optionally substituted by k substituents R9; k is 1, 2, 3, 4, 5 or 6; R9 is C1-C10-alkyl, C1-C10-alkoxy, CN, halogen, phenyl or phenoxy; and R10 is C1-C10-alkyl or hydroxy-C1-C10-alkyl. Backlight units for liquid crystal displays; liquid crystal display devices, and a self-emissive display devices may include this color converter and such colorant.