申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0721935A1
公开(公告)日:1996-07-17
Organic electroluminescence devices having the life of light emission superior to those of conventional electroluminescence devices, and novel arylenediamine derivatives which can remarkably improve the life of light emission of an organic electroluminescence device when the derivatives are used as a component of the device, are disclosed.
The organic electroluminescence devices of the present invention at least contain a p-phenylenediamine derivative having 6 or more benzene ring skeletons, or at least a 4,4'-biphenylenediamine derivative having 5 biphenyl groups.
The arylenediamine derivatives of the present invention include p-phenylenediamine derivatives having 4 biphenyl groups and 4,4'-biphenylenediamine derivatives having 5 biphenyl groups.
本发明公开了发光寿命优于传统电致发光器件的有机电致发光器件,以及新型芳基二胺衍生物,当该衍生物用作有机电致发光器件的组件时,可显著提高该器件的发光寿命。
本发明的有机电致发光器件至少含有一种具有 6 个或更多苯环骨架的对苯二胺衍生物,或至少含有一种具有 5 个联苯基团的 4,4'-联苯二胺衍生物。
本发明的芳基二胺衍生物包括具有 4 个联苯基团的对苯二胺衍生物和具有 5 个联苯基团的 4,4'-联苯二胺衍生物。