Compositions – Organic luminescent material containing compositions
Reexamination Certificate
2007-06-05
2007-06-05
Yamnitzky, Marie (Department: 1774)
Compositions
Organic luminescent material containing compositions
C548S440000, C428S917000, C313S504000
Reexamination Certificate
active
11245092
ABSTRACT:
An organic electroluminescence element comprising: an anode layer, a cathode layer, and an organic luminescence layer therebetween, the organic luminescence layer having a carbazole derivative with a glass-transition temperature of 110° C. or higher, and a phosphorescent dopant. This structure makes it possible to provide an organic electroluminescence element which can make use of the triplet exciton state of the carbazole derivative even at room temperature and which has a practical life and superior heat-resistance.
REFERENCES:
patent: 5487953 (1996-01-01), Shirota et al.
patent: 5891587 (1999-04-01), Hu et al.
patent: 6310360 (2001-10-01), Forrest et al.
patent: 6639357 (2003-10-01), Parthasarathy et al.
patent: 6660410 (2003-12-01), Hosokawa
patent: 6830828 (2004-12-01), Thompson et al.
patent: 6979414 (2005-12-01), Hosokawa
patent: 0 517 542 (1992-12-01), None
patent: 0 936 844 (1999-08-01), None
patent: 3-289090 (1991-12-01), None
patent: 8-003547 (1996-01-01), None
patent: 9-298088 (1997-11-01), None
patent: 9-310066 (1997-12-01), None
patent: 10-226785 (1998-08-01), None
patent: 10-316658 (1998-12-01), None
patent: 11-144866 (1999-05-01), None
patent: 11-329737 (1999-11-01), None
patent: 2000-021572 (2000-01-01), None
patent: 2000-044519 (2000-02-01), None
patent: 2000-63335 (2000-02-01), None
Tsutsui et al., “High Quantum Efficiency . . . Triplet Emissive Center”, Jpn. J. Appl. Phys., Part 2, No. 12B, vol. 38, Dec. 15, 1999, pp. L1502-L1504.
Kido et al., “Bright organic electroluminescent devices having a metal-doped electron-injecting layer”, Applied Physics Letters 73(20), pp. 2866-2868, Nov. 16, 1998.
Idemitsu Kosan Co. Ltd.
Steptoe & Johnson LLP
Yamnitzky Marie
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