<p>The present invention relates to OLEDs comprising an electron impeding layer between the cathode and the emissive layer. An organic light emitting device, comprising: an anode; a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; an electron transport layer; and a cathode disposed, in that order, over a substrate.</p>
申请公布号
EP1932193(B1)
申请公布日期
2014.07.30
申请号
EP20060815640
申请日期
2006.09.26
申请人
UNIVERSAL DISPLAY CORPORATION
发明人
TUNG, YEH;D'ANDRADE, BRIAN, W.;WEAVER, MICHAEL, S.;ESLER, JAMES