Patent ID: 7816020
Filing Date: 2010-10-19
Classification: C09K,H01L,H05B

Abstract:
1. An organic electroluminescent device comprising an anode, organic layers, and a cathode piled one upon another on a substrate wherein at least one of the organic layers is a light-emitting layer containing a host material and a dopant material and a compound represented by the following general formula II is used as said host material: in formula (II), Ar 4 to Ar 6 are independently hydrogen or substituted or unsubstituted aromatic hydrocarbon groups or aromatic heterocyclic groups and at least one of them is a group other than hydrogen, X 2 is —O—, —S—, >CO—, >SO 2 , >NAr 7 , >SiAr 8 Ar 9 , and Ar 7 to Ar 9 are substituted or unsubstituted aromatic hydrocarbon groups or aromatic heterocyclic groups.