Organic electroluminescent element having a luminescent...

Details Organic electroluminescent element having a luminescent... Organic electroluminescent element having a luminescent...

2006-09-14

2010-11-23

Patel, Nimeshkumar D (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S483000, C313S505000, C313S506000, C313S503000, C428S690000, C428S917000

Reexamination Certificate

active

07839078

ABSTRACT:
The present invention provides an organic electroluminescent element comprising a plurality of organic compound layers between a pair of electrodes and comprising at least a luminescent layer and a buffer layer adjacent to the luminescent layer, the luminescent layer comprising at least two host materials and at least one luminescent material, the buffer layer comprising at least one of the host materials and at least one dopant material having a charge trapping function.

REFERENCES:
patent: 7173370 (2007-02-01), Seo et al.
patent: 7196360 (2007-03-01), Seo et al.
patent: 2002/0086180 (2002-07-01), Seo et al.
patent: 2006/0269784 (2006-11-01), Ren et al.
patent: 2006/0279203 (2006-12-01), Forrest et al.
patent: 2002-305085 (2002-10-01), None
patent: 2002-313584 (2002-10-01), None

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