Providing an organic electroluminescent device having stacked electroluminescent units
AssigneeEastman Kodak Company
InventorsLiang-Sheng L. Liao, Ching W. Tang
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Abstract
A stacked organic electroluminescent device and a method of making such device is disclosed. The device comprises an anode, a cathode, at least two organic electroluminescent units disposed between the anode and the cathode, and a doped organic connector disposed between each adjacent organic electroluminescent unit wherein the organic electroluminescent unit comprises at least one organic hole-transporting layer and one organic electron-transporting layer. The doped organic connector comprises at least one n-type doped organic layer or one p-type doped organic layer, or combinations of layers thereof.
Claims75
A stacked organic electroluminescent device comprising:
- (a) an anode;
- (b) a cathode;
- (c) a plurality of organic electroluminescent units disposed between the anode and the cathode;
- and
- (d) a doped organic connector disposed between each adjacent organic electroluminescent unit.
A stacked organic electroluminescent device comprising:
- (a) an anode;
- (b) a cathode;
- (c) a plurality of organic electroluminescent units disposed between the anode and the cathode;
- and
- (d) a doped organic connector disposed between each adjacent organic electroluminescent unit wherein the doped organic connector comprises at least one n-type doped organic layer.
A stacked organic electroluminescent device comprising:
- (a) an anode;
- (b) a cathode;
- (c) a plurality of organic electroluminescent units disposed between the anode and the cathode;
- and
- (d) a doped organic connector disposed between each adjacent organic electroluminescent unit wherein the doped organic connector comprises at least one p-type doped organic layer.
A stacked organic electroluminescent device comprising:
- (a) an anode;
- (b) a cathode;
- (c) a plurality of organic electroluminescent units disposed between the anode and the cathode;
- and
- (d) a doped organic connector disposed between each adjacent organic electroluminescent unit, wherein the doped organic connector comprises at least one n-type doped organic layer and one p-type doped organic layer.
A method of making a stacked organic electroluminescent device having at least two organic electroluminescent units, comprising the steps of:
- (a) providing a first organic electroluminescent unit connected to an anode, and a second organic electroluminescent unit connected to a cathode;
- and
- (b) providing a doped organic connector to connect at least the first and second organic electroluminescent units, such doped organic connector disposed between each adjacent organic electroluminescent unit, whereby the stacked organic electroluminescent device includes only a single anode and cathode.
Dependencies are inferred from the claim text.