Patent ID: 8367218
Filing Date: 2013-02-05
Classification: H01L,Y10T

Abstract:
1. A white organic electroluminescent element, comprising: a reflective anode; a semitransparent or transparent cathode; a capping layer disposed on the cathode; and an organic layer disposed between the anode and the cathode, wherein the organic layer forms a micro-cavity and is a single light emitting component configured as a blue light emitting layer, an electron transporting layer disposed between the blue light emitting layer and the cathode, and a hole transporting layer disposed between the blue light emitting layer and the anode, wherein a thickness of the blue light emitting layer is from 10 nm to 50 nm, a thickness of the electron transporting layer is from 10 nm to 50 nm, a thickness of the hole transporting layer is from 40 nm to 50 nm, and the organic layer has a thickness of X+120N nm, 85≦X≦125, and N=0, 1, or 2, so that a first part of the blue light emitted from the blue light emitting layer is reflected by the anode as a reflected light, the reflected light being converted to a yellow reflected light within the micro-cavity and interfering with a second part of the blue light emitted from the blue light emitting layer to produce white light emitted from the cathode.