Patent ID: 9559325
Date: 2017-01-31
CPC Classifications: C09K,H01L

Claim:
1. A light-emitting element comprising: a first substrate; a first metal electrode over the first substrate, the first metal electrode comprising titanium; a conductive metal oxide layer over and in electrical contact with the first metal electrode, the conductive metal oxide layer comprising indium and tin, a first light-emitting layer over the conductive metal oxide layer; a second light-emitting layer over the first light-emitting layer; and a second metal electrode over the second light-emitting layer, wherein the first metal electrode is configured to function as an anode, and wherein the first light-emitting layer and the second light-emitting layer are different in emission color from each other, and wherein an optical path length L between a bottom surface of the conductive metal oxide layer and a bottom surface of the second metal electrode is between 650 nm and 1500 nm.