Organic electroluminescent element
OwnerYongchun Luo, Naomi Nagai +2inventors
InventorsYongchun Luo, Naomi Nagai, Nobuhito Miura, Naganori Tsutsui
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Abstract
The present invention provides a top emission-type organic EL element with low resistance, whose upper electrode transmits visible light. The organic EL element includes an electron-transport layer, a light-emitting layer, a hole-transport layer and an upper electrode functioning as an anode formed in that order on a lower electrode functioning as a cathode. The upper electrode, which transmits visible light, includes a transparent electrode layer, a metal electrode layer and a transparent electrode layer, layered in that order from the lower electrode side.
Claims24
An organic EL element comprising an electron-transport layer, a light-emitting layer, a hole-transport layer and an upper electrode functioning as an anode formed in that order on a lower electrode functioning as a cathode,
- wherein the upper electrode transmits visible light,
- wherein the upper electrode comprises a transparent electrode layer (also referred to as “lower transparent electrode layer” below), a metal electrode layer (also referred to as “intermediate transparent electrode metal layer” below) and a transparent electrode layer (also referred to as “upper transparent electrode layer” below) layered in that order from the lower electrode side.
An organic EL element comprising a hole-transport layer, a light-emitting layer, an electron-transport layer and an upper electrode functioning as an cathode formed in that order on a lower electrode functioning as a anode;
- wherein the upper electrode transmits visible light;
- and
- wherein the upper electrode comprises a lower transparent electrode layer, an intermediate transparent electrode metal layer and an upper transparent electrode layer layered in that order from the lower electrode side.
Dependencies are inferred from the claim text.