Patent ID: 10229954

Abstract:
An organic light-emitting device, including: a substrate including a blue sub-pixel, a green sub-pixel, and a red sub-pixel, each blue sub-pixel, green sub-pixel, and red sub-pixel respectively including an anode, a first common layer, a second common layer, and a cathode, in the blue sub-pixel, a blue light-emitting layer between the first common layer and the second common layer, in the green sub-pixel, a green light-emitting layer between the first common layer and the second common layer, and in the red sub-pixel, a red light-emitting layer between the first common layer and the second common layer, wherein HOMO energy levels of the blue, green, and red light-emitting layers are each lower than a HOMO energy level of the first common layer, and wherein the HOMO energy level of the green light-emitting layer is 0.2 eV or more higher than the HOMO energy level of the blue light-emitting layer.