Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2006-12-19
2006-12-19
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S506000, C428S690000
Reexamination Certificate
active
07151339
ABSTRACT:
The present invention relates to organic light emitting devices (OLEDs), and more specifically to an OLED device structure that provides improved performance characteristics, such as increased luminous efficiency and improved lifetime. The OLEDs of present invention comprise an emissive layer in which an emissive dopant is non-uniformly doped into a host material.
REFERENCES:
patent: 4769292 (1988-09-01), Tang et al.
patent: 5247190 (1993-09-01), Friend et al.
patent: 5703436 (1997-12-01), Forrest et al.
patent: 5707745 (1998-01-01), Forrest et al.
patent: 5834893 (1998-11-01), Bulovic et al.
patent: 5844363 (1998-12-01), Gu et al.
patent: 6013982 (2000-01-01), Thompson et al.
patent: 6087196 (2000-07-01), Sturm et al.
patent: 6091195 (2000-07-01), Forrest et al.
patent: 6097147 (2000-08-01), Baldo et al.
patent: 6294398 (2001-09-01), Kim et al.
patent: 6303238 (2001-10-01), Thompson et al.
patent: 6310360 (2001-10-01), Forrest et al.
patent: 6337102 (2002-01-01), Forrest et al.
patent: 6468819 (2002-10-01), Kim et al.
patent: 2002/0034656 (2002-03-01), Thompson et al.
patent: 2002/0182441 (2002-12-01), Lamansky et al.
patent: 2003/0072964 (2003-04-01), Kwong et al.
patent: 2003/0230980 (2003-12-01), Forrest et al.
patent: 2005108665 (2005-04-01), None
Baldo et al., “Highly Efficient Phosphorescent Emission from Organic Electroluminescent Devices”, Nature, vol. 395, 151-154 (1998).
Baldo et al., “Very high-efficiency green organic light-emitting devices based on electropohosphorescence,” Applied Physics Letters, vol. 75, No. 1, (1999).
Adachi et al., “Nearly 100% Internet Phosphorescent Efficiency in an Organic Light Emitting Device”, J. Appl. Phys., 90, 5048 (2001).
Adachi, et al., “High-efficiency organic electrophosphorescent devices with tris (2-phenylpyridine) iridium doped into electron-transporting materials,” Applied Physics Letters, Vo. 77, No. 6 (2000).
Baldo et al., <<Transient Analysis of organic electrophosphorescence : 1. Transient analysis of triplet energy transfer>>, Physical Review B, 2000, 62(16), pp. 10958-10966.
Adamovich Vadim
Brown Julia
Weaver Michael
Kenyon & Kenyon LLP
Universal Display Corporation
Williams Joseph
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