Patent ID: 8587191

Claim:
An organic light emitting display (OLED) device, comprising: a reflective electrode and a transmissive or semi-transmissive electrode disposed opposite each other; at least two organic emission layers (EMLs) interposed between the reflective electrode and the transmissive or semi-transmissive electrode, each EML comprising a same group of sub EMLs and each sub EML emitting light of a predetermined color; an organic layer disposed between the EMLs, and the organic layer controlling a distance between the EMLs to satisfy a condition of constructive interference for light emitted from a major surface of a respective sub EML emitting light of a same color in each EML; and an optical path control layer disposed on the transmissive or semi-transmissive electrode and the optical path control layer being spaced apart from the EMLs by the transmissive or semi-transmissive electrode, the OLED device having a resonator formed between the reflective electrode and the optical path control layer and a resonance mode of light extracted from the optical path control layer being a multi-resonance mode having at least two modes in a visible light region, wherein the at least two organic EMLs are white EMLs, each white EML including a first sub EML emitting light of red, a second sub EML emitting light of green, and a third sub EML emitting light of blue, and wherein each of distances between the EMLs emitting light in a same color in the at least two organic EMLs satisfies the condition of the constructive interference.