Electroluminescent stability

Details Electroluminescent stability Electroluminescent stability

2007-10-09

2007-10-09

Yamnitzky, Marie (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C546S004000, C546S010000, C257SE51044

Reexamination Certificate

active

10765295

ABSTRACT:
An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprises an emissive material having the structure:wherein M is a metal having an atomic weight greater than 40;ring A is an aromatic heterocyclic or a fused aromatic heterocyclic ring with at least one nitrogen atom that is coordinated to the metal M, wherein the ring A can be optionally substituted;(X—Y) is an ancillary ligand;m is a value from 1 to the maximum number of ligands that may be attached to the metal; and m+n is the maximum number of ligands that may be attached to the metal.The emissive material itself is also provided. The emissive material may have improved efficiency and stability when incorporated into a light emitting device.

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: 6337102 (2002-01-01), Forrest et al.
patent: 6468819 (2002-10-01), Kim et al.
patent: 2003/0054198 (2003-03-01), Tsuboyama et al.
patent: 2003/0059646 (2003-03-01), Kamatani et al.
patent: 2003/0230980 (2003-12-01), Forrest et al.
patent: 2003/0235712 (2003-12-01), Takiguchi et al.
patent: 2004/0086743 (2004-05-01), Brown et al.
patent: 2004/0174116 (2004-09-01), Lu et al.
patent: 1 239 526 (2002-09-01), None
patent: 1 348 711 (2003-10-01), None
patent: 2 404 380 (2005-02-01), None
patent: 2004-319438 (2004-11-01), None
patent: WO 02/15645 (2002-02-01), None
patent: 02/081488 (2002-10-01), None
patent: WO 03/000661 (2003-01-01), None
patent: 03/084973 (2003-10-01), 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% Internal Phosphorescent Efficiency in an Organic Light Emitting Device, J. Appl. Phys., 90, 5048-5051 (2001).
Kwong et al., << High operational stability of electrophosphorescent devices >>, Appl. Phys. Lett., 81, pp. 162-164 (2002).
International Search Report, Appln. No. PCT/US2005/001720, filed Jan. 19, 2005.
Patent Abstracts of Japan, vol. 2003, No. 12, Dec. 5, 2003 & JP 2004 319438, 2003 ?.
Tsuzuki et al., “Color Tunable Organic Light-Emitting Diodes Using Pentafluorophenyl-Substituted Iridium Complexes”, Adv. Materials, vol. 15, No. 17, p. 1455-1458, 2003.

Affiliated with

Also associated with

Rating

Electroluminescent stability does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3860134