Tandem OLED having stable intermediate connectors

Details Tandem OLED having stable intermediate connectors Tandem OLED having stable intermediate connectors

2006-10-24

2006-10-24

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S503000, C313S506000

Reexamination Certificate

active

07126267

ABSTRACT:
A tandem OLED includes an anode, a cathode, and a plurality of organic electroluminescent units disposed between the anode and the cathode, wherein each organic electroluminescent unit includes at least one light-emitting layer, and an intermediate connector disposed between each adjacent organic electroluminescent unit, wherein the intermediate connector includes at least a high work function metal layer having a work function of no less than 4.0 eV and a metal compound layer, wherein the intermediate connector has a sheet resistance of higher than 100 kΩ per square, and wherein the high work function metal layer improves the operational stability of the OLED.

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