Patent ID: 8294358

Claim:
An organic light emitting diode (OLED) display device, comprising: a substrate; a first electrode disposed on the substrate; an emission layer disposed on the first electrode; a hole injection layer disposed on the emission layer; and a second electrode disposed directly on the hole injection layer, wherein the hole injection layer comprises an inorganic semiconductor material, the hole injection layer is provided between the substrate and the second electrode; and the inorganic semiconductor material is boron oxide (B 2 O 3 ); and the emission layer comprises a host material selected from the group consisting of distyrylarylene (DSA), distyrylbenzene (DSB), a DSB derivative, a 4,4′-bis(2,2′-diphenylvinyl)-1,1′-biphenyl (DPVBi) derivative, spiro-DPVBi, spiro-sixphenyl (spiro-6P), 4,4-N,N-dicarbazole-biphenyl (CBP), a CBP derivative, N,N-dicarbazolyl-3,5-benzene (mCP), a mCP derivative, and a spiro derivative.