Patent ID: 8957578
Filing Date: 2015-02-17
Classification: B82Y,H01L,Y02E,Y02P

Abstract:
1. An organic light emitting display device comprising: a substrate; a first electrode disposed over the substrate; a light emitting structure disposed over the first electrode; a second electrode disposed over the light emitting structure; and a plurality of nanoparticles disposed over the second electrode and capable of causing surface plasmon resonance by light, and comprising first nanoparticles and second nanoparticles which are different from the first nanoparticles, wherein the device comprises a first sub-pixel region and a second sub-pixel region when viewed in a viewing direction perpendicular to the substrate, the first sub-pixel region configured to emit light having a first color and the second sub-pixel region configured to emit light having a second color which is different from the first color, wherein each of the first and second sub-pixel regions comprises the first and second nanoparticles distributed therein, the first nanoparticles being configured to cause surface plasmon resonance by light having the first color, the second nanoparticles being configured to cause surface plasmon resonance by light having the second color.