Active solid-state devices (e.g. – transistors – solid-state diode – Organic semiconductor material
Reexamination Certificate
2011-03-01
2011-03-01
Such, Matthew W (Department: 2891)
Active solid-state devices (e.g., transistors, solid-state diode
Organic semiconductor material
C257SE51051, C313S504000, C428S690000, C546S016000
Reexamination Certificate
active
07897964
ABSTRACT:
It is an object of the present invention to provide a material having a high Tg and a wide energy gap. The present invention provides a spirofluorene derivative represented by General Formula 1. (In the formula, R1is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or a group represented by General Formula 2. Each of R2and R3is either hydrogen or an alkyl group having 1 to 4 carbon atoms and may be identical or different. R4is an aryl group having 6 to 15 carbon atoms. Each of R5and R6is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 15 carbon atoms and may be identical or different.)
REFERENCES:
patent: 5840217 (1998-11-01), Lupo et al.
patent: 6822094 (2004-11-01), Salbeck et al.
patent: 6887392 (2005-05-01), Ogino et al.
patent: 7208869 (2007-04-01), Ogino et al.
patent: 7540978 (2009-06-01), Pfeiffer et al.
patent: 7547562 (2009-06-01), Ogino
patent: 7550173 (2009-06-01), Seo et al.
patent: 2002/0093283 (2002-07-01), Seo et al.
patent: 2007/0116984 (2007-05-01), Park et al.
patent: 2004-087395 (2004-03-01), None
patent: WO 2005/121064 (2005-12-01), None
patent: WO 2006/062218 (2006-06-01), None
Kafafi, Z.H., Ed. Organic Electroluminescence. Taylor & Francis: Boca Raton, FL (2005): pp. 152-161.
Van Slyke et al.,Organic Electroluminescent Devices with Improved Stability, Appl. Phys. Lett. 69 (15), Oct. 7, 1996, pp. 2160-2162.
Shen et al., “High TgBlue Emitting Materials for Electroluminescent Devices,” Journal of Materials Chemistry, vol. 15, No. 25, 2005, pp. 2455-2463.
International Search Report (Application No. PCT/JP2006/319401) dated Dec. 12, 2006.
Written Opinion (Application No. PCT/JP2006/319401) dated Dec. 12, 2006.
Pudzich, “Synthese und Charakterisierung spiroverknüpfter Emmitter- und Ladungstransportmaterialien mit kombinierten Funktionalitäten,” PhD Thesis, University fo Kassel, Kassel, Germany, 2002. http://www.chemie.uni-kassel.de/mmc/pub/diss/pudzich/dissertation-pudzich.pdf.
Kawakami Sachiko
Nakashima Harue
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Such Matthew W
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