Patent ID: 8288018

Claim:
A display apparatus comprising a substrate and an organic light-emitting device on the substrate, wherein the organic light-emitting device comprises: at least a pair of electrodes composed of an anode, a cathode, and an organic compound layer disposed therebetween, and a luminescent layer disposed between the anode and the cathode, wherein the luminescent layer has a host and a dopant which is a phosphorescent luminescent material, and wherein the organic compound layer is disposed between the luminescent layer and the anode and comprises an amino compound, the amino compound represented by general formula wherein Z 1 , Z 2 , Z 3 , and Z 4 each represent a group selected from the group consisting of a hydrogen atom and a substituted or unsubstituted alkyl group, and are the same or different; W 1 , W 2 , and W 3 each represent a group selected from the group consisting of a hydrogen atom and a substituted or unsubstituted alkyl group and alkoxy group, and are the same or different; Y 3 and Y 4 each represent a group selected from the group consisting of a substituted or unsubstituted alkyl group, aryl group and heterocyclic group, and are the same or different, Y 3 and Y 4 not being fluoren-4-yl group; R 1 to R 4 each represent a group selected from the group consisting of a hydrogen atom and a substituted or unsubstituted alkyl group, aryl group and heterocyclic group, and are the same or different; and a and d each represent an integer of 1 to 4; and b and c each represent an integer of 1 to 3.