Organic electro-luminescent device

Details Organic electro-luminescent device Organic electro-luminescent device

2006-06-14

2009-06-09

Macchiarolo, Peter J (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000, C257S040000

Reexamination Certificate

active

07545093

ABSTRACT:
An organic electro-luminescent device. The device comprises two electrodes and an organic electro-luminescent structure interposed therebetween. The electrodes are disposed on a substrate, one serving as an anode and the other as a cathode. The organic electro-luminescent structure comprises a fluorescent emissive layer, a phosphorescent emissive layer and a nondoped organic material layer interposed therebetween. The phosphorescent emissive layer has a host material. The nondoped organic material layer has a highest occupied molecular orbital (HOMO) energy level no higher than that of the host material in the phosphorescent emissive layer.

REFERENCES:
patent: 6885025 (2005-04-01), Tung et al.
patent: 2003/0197467 (2003-10-01), Adachi et al.
patent: 2003/0230980 (2003-12-01), Forrest et al.
patent: 2005/0123794 (2005-06-01), Deaton et al.
patent: 2006/0158104 (2006-07-01), Iijima et al.
patent: 2006/0232194 (2006-10-01), Tung et al.
patent: 2006/0273714 (2006-12-01), Forrest et al.
patent: 1790768 (2006-06-01), None
patent: 2004031211 (2004-01-01), None
CN Office Action mailed Apr. 10, 2008.
English abstract of CN1790768.

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