Patent ID: 8816337
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A display apparatus comprising: a first organic electroluminescent element to emit a first color; and a second organic electroluminescent element to emit a second color different from the first color, both the first and the second organic electroluminescent elements being provided with an anode, a cathode, and a light-emitting layer disposed between the anode and the cathode, wherein a first light-emitting layer of the first organic electroluminescent element is disposed in common to the second organic electroluminescent element, a second light-emitting layer of the second organic electroluminescent element is disposed in contact with the first light-emitting layer and in the side nearer to the cathode than is the first light-emitting layer, the first light-emitting layer contains a host material and an assist dopant material to transport holes to the second light-emitting layer, and the second organic electroluminescent element is configured to satisfy Relational expressions (1) to (3) described below,  where HOMO