Stacked white OLED having separate red, green and blue sub-elements
Patent
·
OSTI ID:1136633
The present invention relates to efficient organic light emitting devices (OLEDs). The devices employ three emissive sub-elements, typically emitting red, green and blue, to sufficiently cover the visible spectrum. Thus, the devices may be white-emitting OLEDs, or WOLEDs. Each sub-element comprises at least one organic layer which is an emissive layer--i.e., the layer is capable of emitting light when a voltage is applied across the stacked device. The sub-elements are vertically stacked and are separated by charge generating layers. The charge-generating layers are layers that inject charge carriers into the adjacent layer(s) but do not have a direct external connection.
- Research Organization:
- The University of Michigan, Ann Arbor, MI (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-07ER84809
- Assignee:
- The Regents of the University of Michigan (Ann Arbor, MI)
- Patent Number(s):
- 8,766,291
- Application Number:
- 13/124,698
- OSTI ID:
- 1136633
- Country of Publication:
- United States
- Language:
- English
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