公开(公告)号：EP3197243B1

公开(公告)日：2018-09-26

申请号：EP16821110.0

申请日：2016-05-24

申请人： Kaneka Corporation

发明人： NAGAI, Naomi ,  UMEZAKI, Hirotaka

IPC分类号： H05B33/12 ,  H01L51/50 ,  H05B33/04 ,  C09K11/06 ,  H01L51/00 ,  H01L51/52 ,  H01L51/56

CPC分类号： H01L51/5044 ,  C09K11/06 ,  C09K2211/185 ,  H01L51/001 ,  H01L51/0096 ,  H01L51/50 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/524 ,  H01L51/56 ,  H01L2251/552 ,  H01L2251/556 ,  Y02B20/181

摘要： There are provided a white light-emitting organic EL panel that is high in color rendering properties and that is excellent in hue stability, and a production method therefor. The present invention is directed to a panel including a light-emitting functional layer that has an anode side blue light-emitting unit, a connection layer, and a cathode side red-green light-emitting unit in this order from the anode layer side toward the cathode layer side. The connection layer is a layer injecting electrons into the anode side blue light-emitting unit side and injecting holes into the cathode side red-green light-emitting unit side when current is applied. The cathode side red-green light-emitting unit includes a red-green phosphorescent light-emitting layer that is a composite layer composed of a red color phosphorescent material, a green color phosphorescent material and a host material for the phosphorescent light-emitting layer. The maximum emission peak wavelength of the red color phosphorescent material is apart from the maximum emission peak wavelength of the green color phosphorescent material by 60 nm or more, and the panel is capable of emitting white light with an general color rendering index Ra and a special color rendering index R9 in accordance with JIS Z 8726, both of which are greater than or equal to 90.