Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-11-30
2009-06-30
Garrett, Dawn (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000
Reexamination Certificate
active
07553558
ABSTRACT:
An OLED device comprises a cathode, an anode, and a light-emitting layer therebetween, and additionally comprises a layer between the cathode and the light-emitting layer including a compound comprising one and only one anthracene nucleus bearing no more than two phenanthroline-containing substituents wherein said anthracene nucleus is substituted in the 2-, 3-, 6-, or 7-position with a phenanthroline-containing substituent. When such materials are included in a layer, such as an electron-transporting layer, that provide both desirable electroluminescent properties as well as good device stability.
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R. Wang, et al., “1-Methyl-2-(anthryl)-imidazo[4,5-f][1,10]-phenanthroline: A Highly Efficient Electron-Transport Compound and a Bright Blue-Light Emitter for Electroluminescent Devices”, Advanced Functional Materials, 2005, pp. 1483-1487.
K. P. Klubek, et al, “Electroluminescent Device Containing a Phenanthroline Derivative”, U.S. Appl. No. 11/290,214 ,(D-91885) filed Nov. 30, 2005.
Klubek Kevin P.
Kondakov Denis Y.
Eastman Kodak Company
Garrett Dawn
Kluegel Arthur E.
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