Patent ID: 8383250
Filing Date: 2013-02-26
Classification: H01L

Abstract:
1. A light-emitting element comprising: a cathode; an anode; a red-light-emitting layer that is disposed between the cathode and the anode and emits red light; a blue-light-emitting layer that is disposed between the red-light-emitting layer and the cathode and emits blue light; a green-light-emitting layer that is disposed between the blue-light-emitting layer and the cathode and emits green light; and an intermediate layer that is disposed between and in contact with the red-light-emitting layer and the blue-light-emitting layer and functions so as to control the transfer of positive holes and electrons between the red-light-emitting layer and the blue-light-emitting layer, wherein the intermediate layer contains a first material and a second material different from the first material, the red-light-emitting layer contains the same material as the first material, and each of the blue-light-emitting layer and the green-light-emitting layer contains the same material as the second material.