Patent ID: 6720092
Filing Date: 2004-04-13
Classification: H01L,Y10S,Y10T

Abstract:
An organic light-emitting diode (OLED) device which produces substantially white light, comprising:a) a substrate; b) an anode disposed over the substrate; c) a hole injecting layer disposed over the anode; d) a hole-transport layer disposed over the hole injecting layer; e) a yellow light-emitting layer having rubrene or a derivative thereof greater than 50% by volume of the constituents of such yellow light-emitting layer that emits light in the yellow region of the spectrum and is disposed on the hole-transport layer; f) a light-emitting layer doped with a blue light-emitting compound, disposed directly on the yellow light-emitting layer; g) an electron-transport layer disposed over the blue light-emitting layer; and h) a cathode disposed over the electron-transport layer.