Organic electroluminescent element

Details Organic electroluminescent element Organic electroluminescent element

2002-04-23

2008-03-04

Cano, Milton I. (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C252S301160, C548S120000, C548S150000, C548S218000, C548S302100, C548S427000, C549S275000

Reexamination Certificate

active

07338720

ABSTRACT:
An organic electroluminescent (EL) device which uses, as a luminescence-assisting agent, a novel coumarin derivative with a specific structure. The coumarin derivative effectively accelerates in such an organic EL device the transfer of excited energy in a host compound to a guest compound. Thus, the coumarin derivative affords the organic EL device which is superior in a color purity, luminescent efficiency and life expectancy when used in combination with appropriate host and guest compounds.

REFERENCES:
patent: 4769292 (1988-09-01), Tang et al.
patent: 6440586 (2002-08-01), Yanagi et al.
patent: 6573380 (2003-06-01), Taniguchi et al.
patent: 2005/0089713 (2005-04-01), Satsuki et al.
patent: 1010742 (2000-06-01), None
patent: 1 041 074 (2000-10-01), None
patent: 2001-76876 (2001-03-01), None
patent: 2001-076876 (2001-03-01), None
patent: 2002-47291 (2002-02-01), None
patent: 2002-226484 (2002-08-01), None

Affiliated with

Also associated with

Rating

Organic electroluminescent element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Organic electroluminescent element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic electroluminescent element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3967227