Highly Reliable Stacked White Organic Light Emitting Device
AssigneeThe Regents of the University of Michigan
InventorsStephen R. FORREST, Caleb COBURN, Changyeong JEONG
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Abstract
An organic light emitting device (OLED) comprising: a cathode and an anode; a blue emitting layer; and at least two hybrid red/green emitting layers. One of the at least two hybrid red/green emitting layers is a cathode side, red/green emitting layer that is disposed between the cathode and the blue emitting layer. The second of the at least two hybrid red/green emitting layers is an anode side, red/green emitting layer that is disposed between the blue emitting layer and the anode. The OLED emits white light.
Claims20
An organic light emitting device (OLED) comprising:
- a cathode and an anode;
- a blue emitting layer;
- and
- at least two hybrid red/green emitting layers, wherein one of the at least two hybrid red/green emitting layers is a cathode side, hybrid red/green emitting layer disposed between the cathode and the blue emitting layer, and the second of the at least two hybrid red/green emitting layers is an anode side, hybrid red/green emitting layer disposed between the blue emitting layer and the anode, wherein the OLED emits white light.
A stacked white-light emitting OLED comprising an anode, a cathode, and disposed between the anode and the cathode are at least two hybrid red/green emitting layers;
- wherein each hybrid red/green emitting layer has a cathode side and an anode side, and includes a mixed red/green emitting sublayer and an adjacent green emitting sublayer, the mixed red/green emitting sublayer proximate to the anode side.
An organic light emitting device (OLED) comprising:
- a cathode and an anode;
- a blue emitting layer, wherein the blue emitting layer includes a gradient blue emitter concentration profile or a manager dopant, or a gradient blue emitter concentration profile and a manager dopant;
- at least three hybrid red/green emitting layers, wherein one of the at least three hybrid red/green emitting layers is a cathode side, hybrid red/green emitting layer disposed between the cathode and the blue emitting layer, and two of the at least three red/green emitting layers are anode side, hybrid red/green emitting layers disposed between the blue emitting layer and the anode;
- and
- a red/green charge generating layers that separates the at least two anode side, hybrid red/green emitting layers;
- wherein the OLED emits white light.
Dependencies are inferred from the claim text.