Cathode structures using silver for OLED devices
AssigneeEastman Kodak Company
InventorsAmalkumar Ghosh, Steven Van Slyke, Angelo Pignata
Life of this patent
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Abstract
A cathode structure for use in an OLED device having one or more OLED layers includes a thin light-transmissive layer having a top surface and a bottom surface and including silver (Ag) wherein the Ag acts as a conductor for the cathode structure, and a light-transmissive electron-injecting layer disposed in contact with the bottom surface of the thin light-transmissive layer and with an underlying OLED layer. The structure also includes an oxide layer disposed over the thin light-transmissive layer, and a separation layer disposed between the top surface of the thin light-transmissive layer and the oxide layer.
Claims12
A cathode structure for use in an OLED device having one or more OLED layers, comprising:
- a) a thin light-transmissive layer having a top surface and a bottom surface and including silver (Ag) wherein the Ag acts as a conductor for the cathode structure;
- b) a light-transmissive electron-injecting layer disposed in contact with the bottom surface of the thin light-transmissive layer and with an underlying OLED layer;
- c) an oxide layer disposed over the thin light-transmissive layer;
- and
- d) a separation layer disposed between the top surface of the thin light-transmissive layer and the oxide layer.
A cathode structure for use in an OLED device having one or more OLED layers, comprising:
- a) a thin light-transmissive layer having a top surface and a bottom surface and including Ag wherein the Ag acts as a conductor for the cathode structure;
- b) a light-transmissive electron-injecting layer disposed in contact with the bottom surface of the thin light-transmissive layer and with an underlying OLED layer;
- c) an oxide layer disposed over the thin light-transmissive layer;
- and
- d) a separation layer including Al, Ti, Mg, Zn, Sn, In, Au, Li, or Ca, or combinations thereof disposed between the top surface of the thin light-transmissive layer and the oxide layer.
Dependencies are inferred from the claim text.