Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With window means
Reexamination Certificate
2007-01-30
2007-01-30
Clark, S. V. (Department: 2823)
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
With window means
C257S704000, C438S116000
Reexamination Certificate
active
10820142
ABSTRACT:
Provided are a glass for a window which glass is suitably fitted to a semiconductor package made of a plastic and a glass window for the semiconductor package which glass window has various functions, the glass (1) being for use as a window material for a semiconductor package made of a plastic and having an average linear expansion coefficient of 120×10−7/° C. to 180×10−7/° C. at a temperature of 100 to 300° C., or (2) the glass having the above average linear expansion coefficient and having a U content of 5 ppb or less and a Th content of 5 ppb or less, and the glass window (a) being formed of the above glass for a window, (b) having the function of a lens and the above average linear expansion coefficient, or being formed of a glass (c) having the above average linear expansion coefficient and having a U content of 5 ppb or less and a Th content of 5 ppb or less and containing Cu and phosphorus oxide, the glass window being capable of exhibiting a transmittance of 50% at a wavelength of 630 nm or less in terms of a spectral transmittance at a wavelength of 400 to 700 nm when the glass has a thickness of 0.5 mm.
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Clark S. V.
Hoya Corporation
Nixon & Vanderhye P.C.
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