Patent ID: 9512137
Filing Date: 2016-12-06
CPC Classification: C07C,C07D,H01L

Claim Text:
1. An organic electroluminescence device comprising, in order: an anode, an emitting layer, an electron-transporting region, and a cathode, the electron-transporting region comprising an electron-transporting material has a formula (ET), wherein L 1 is a single bond or a substituted or unsubstituted (a+1)-valent aromatic ring group having 6 to 50 ring carbon atoms, Ar 1 is a substituted or unsubstituted (1+b)-valent aromatic ring group having 6 to 50 ring carbon atoms, a, b, and c are each independently an integer from 1 to 3, when L 1 and Ar1 have a substituent, the substituent is unsubstituted and selected from the group consisting of an alkyl group, an alkylsilyl group, a halogenated alkyl group, a phenyl group, a biphenyl group, terphenyl group, a naphthyl group, a phenanthryl group, an anthryl group, a 9,9-dimethylfluorenyl group, a benzanthryl group, a pyrenyl group, a cycloalkyl group, an alkoxy group, a heterocyclic group that does not include a nitrogen atom, an alkoxycarbonyl group, a halogen atom, a hydroxyl group, a nitro group, a cyano group, and a carboxyl group, and A is a fused aromatic ring group having a formula selected from the group consisting of formulas (A-3), and A(5) to (A-7), wherein c of R