Patent ID: 8183767
Filing Date: 2012-05-22
Classification: H01L

Abstract:
1. A display apparatus comprising: a substrate, and a pixel having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, wherein the first to fourth sub-pixels each comprise a light emitting device, the light emitting device comprising a reflective layer, a light emitting layer and a single pair of electrodes; wherein interference occurs between (a) light directed from the light emitting layer to the reflective layer which is reflected by the reflective layer and (b) light directed from the light emitting layer in the direction opposite to the reflective layer; wherein the first sub-pixel comprises a first light emitting device; wherein the second sub-pixel comprises a second light emitting device having a light emission color different from the first light emitting device; wherein the third sub-pixel comprises a third light emitting device having a light emission color different from the first light emitting device and the second light emitting device; wherein the fourth sub-pixel comprises a fourth light emitting device having the same emission spectrum as a mixed spectrum of light emissions of the first light emitting device, light emissions of the second light emitting device and light emissions of the third light emitting device; wherein the first to third light emitting devices are successively stacked on a first region of the substrate; wherein the fourth light emitting device is arranged in a second region different from the first region; wherein the fourth light emitting device comprises a first diode having the same constitution as the first light emitting device, a second diode having the same constitution as the second light emitting device, and a third diode having the same constitution as the third light emitting device; and wherein the first to third diodes are successively stacked on the second region of the substrate.