Organic electroluminescent device

Details Organic electroluminescent device Organic electroluminescent device

2005-04-20

2009-08-11

Garrett, Dawn (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000

Reexamination Certificate

active

07572523

ABSTRACT:
An organic electroluminescent device including a pair of electrodes and at least one organic compound layer including a luminescent layer between the pair of electrodes, in which the luminescent layer contains at least one host material and at least one phosphorescent material, and the concentration of the phosphorescent material changes periodically in the depth direction of the luminescent layer.

REFERENCES:
patent: 6310360 (2001-10-01), Forrest et al.
patent: 2002/0197511 (2002-12-01), D'Andrade et al.
patent: 2005/0168137 (2005-08-01), Adamovich et al.
patent: 2006/0125379 (2006-06-01), Liu et al.
patent: WO-00/70655 (2000-11-01), None

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