Patent ID: 8853715
Filing Date: 2014-10-07
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, a third organic electroluminescent element to emit a third color different from the first color and the second color, both first, second and third 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 and the third organic electroluminescent elements, a second light-emitting layer of the second organic electroluminescent element is disposed in contact with the first light-emitting layer and disposed between the cathode and the first light-emitting layer, and the second light-emitting layer contains a host material and a light-emitting dopant material and is configured to satisfy Relational expressions (A) and (B) described below,  where LUMO a third light-emitting layer of the third organic electroluminescent element is disposed in contact with the first light-emitting layer and disposed between the anode and the first light-emitting layer, and the third light-emitting layer contains a host material and a light-emitting dopant material and is configured to satisfy Relational expressions (E) and (F) described below,  where LUMO