Patent ID: 7252893
Filing Date: 2007-08-07
Classification: C09K,H01L,H05B,Y02B,Y10S

Abstract:
1. A white light-emitting OLED device including spaced anode and cathode, and having blue light-emitting and yellow, orange, or red light-emitting layers, the blue light-emitting layer including a) a monoanthracene derivative of Formula (I) as a host material and a cohost material 4,4′-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB) that is in a range of 4-10% by volume of both host materials wherein: R R R R provided that R b) a blue light-emitting dopant, wherein the blue-emitting dopant is from 0.25 to 5% by volume of the host materials.