Patent ID: 9716230
Date: 2017-07-25
CPC Classifications: C09K,H01L,Y02B

Claim:
1. A light emitting device comprising a white light emitting layer, said white light emitting layer comprising: a polyfluorene blue light material, and red light quantum dots and green light quantum dots doped in the polyfluorene blue light material; wherein the polyfluorene blue light material is one or more selected from the group consisting of biphenyl containing branched side chains, a tetraalkyl substituted indenofluorene polymer, a polyfluorene bithiophene alternative copolymer, an alternative copolymer of octyl-bisubstituted fluorene and benzothiadiazde, a binary or ternary random copolymer of fluorene and thiophene, 4.7-dithiophene-2,1,3-benzothiadiazde and 4.7-dithiophene-2,1,3-benzoselenadiazole, or the polyfluorene blue light material consists of ethylenedioxythiophene.