Patent ID: 8759817

Claim:
An organic light emitting device array comprising a plurality of organic light emitting devices of different emission light colors each comprising: a first electrode disposed on a transmission side; a second electrode disposed on a reflection side; and an organic light emitting layer disposed between the first and the second electrodes, wherein when an optical path between a light emitting position and a reflecting position on the reflection side is defined as L, a cycle of an interferogram starts at an optical path difference indicating a minimum value of the interferogram and ends at an optical path difference indicating a next minimum value of the interferogram, an optical path difference 2 L of each device is larger than an optical path difference indicating a minimum value of a cycle of an interferogram of each device and is smaller than an optical path difference indicating a maximum value of the same cycle of an interferogram of each device, or an optical path difference 2 L of each device is larger than an optical path difference indicating a maximum value of a cycle of an interferogram of each device and is smaller than an optical path difference indicating a next minimum value of the same cycle of an interferogram of each device, and wherein the first electrode has a reflectance of less than 50%.