Patent ID: 7597967
Filing Date: 2009-10-06
Classification: C09K,H01L,Y10S

Abstract:
1. An OLED device comprising a cathode, an anode, and located therebetween a light emitting layer (LEL) comprising: a phosphorescent compound of Ir or Pt represented by the formula: wherein: A is a substituted or unsubstituted heterocyclic ring containing at least one N atom; B is a substituted or unsubstituted aromatic or heteroaromatic ring or a ring containing a vinyl C bonded to M; X-Y is an anionic bidentate ligand; and either m is an integer from 1 to 3, and n in an integer from 0 to 2 such that m+n =3 for M=Ir or m is an integer from 1 to 2 and n in an integer from 0 to 1 such that m+n=2 for M=Pt; wherein: