GaN crystal substrate, fabricating method of GaN crystal...

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure

Reexamination Certificate

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C257S103000, C257SE25019, C438S047000

Reexamination Certificate

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07928447

ABSTRACT:
A GaN crystal substrate is provided, which has a diameter of not less than 20 mm and a thickness of not less than 70 μm and not more than 450 μm, and has a light absorption coefficient of not less than 7 cm−1and not more than 68 cm−1for light in the wavelength range of not less than 375 nm and not more than 500 nm. A fabricating method of the GaN crystal substrate, and a light-emitting device fabricated using the GaN crystal substrate are also provided.

REFERENCES:
patent: 6509651 (2003-01-01), Matsubara et al.
patent: 2004/0211355 (2004-10-01), Motoki et al.
patent: 2006/0264011 (2006-11-01), Hachigo et al.
patent: 2000-12900 (2000-01-01), None
patent: 2000-022212 (2000-01-01), None
patent: 2000022212 (2000-01-01), None
patent: 2002-299252 (2002-10-01), None
patent: 2002-368261 (2002-12-01), None
Japanese Notice of Grounds of Rejection, w/ English a translation thereof, issued in Japanese Patent Application No. JP 2004-020078 dated on Nov. 18, 2008.

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