公开(公告)号：EP3136462A4

公开(公告)日：2017-12-20

申请号：EP15782884

申请日：2015-04-13

申请人： SUMITOMO CHEMICAL CO ,  CAMBRIDGE DISPLAY TECH LIMITED

发明人： MATSUMOTO RYUJI ,  STEUDEL REGINE ANNETTE ,  WILSON RICHARD

IPC分类号： H01L51/50 ,  C07D213/06 ,  C07F15/00 ,  C09K11/06 ,  H05B33/12

CPC分类号： H01L51/0035 ,  C07F15/0033 ,  C08G61/02 ,  C08G61/12 ,  C08G61/128 ,  C08G2261/12 ,  C08G2261/135 ,  C08G2261/1412 ,  C08G2261/312 ,  C08G2261/3142 ,  C08G2261/3162 ,  C08G2261/374 ,  C08G2261/5242 ,  C08G2261/76 ,  C08G2261/95 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1029 ,  C09K2211/185 ,  H01L27/3206 ,  H01L51/0039 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5072 ,  H01L51/5092

摘要： Provided is a light emitting device which is excellent in external quantum efficiency. The light emitting device comprises an anode, a cathode, a first light-emitting layer provided between the anode and the cathode, and a second light-emitting layer provided between the anode and the cathode. The first light-emitting layer is a layer obtained by using a polymer compound comprising a constitutional unit having a cross-linkable group and a phosphorescent constitutional unit, and the second light-emitting layer is a layer obtained by using a composition comprising a non-phosphorescent low molecular weight compound having a heterocyclic structure and at least two phosphorescent compounds.