Glass-ceramic composite

Details Glass-ceramic composite Glass-ceramic composite

1997-01-30

1999-03-02

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 5, 501 6, 501 7, C03C 1400, C03C 1004

Patent

active

058771018

ABSTRACT:
A glass-ceramic composite which has forsterite in an amount of 40 to 60% by weight is included in crystallized glass having a coefficient of thermal expansion of 100.degree. to 200.times.10.sup.-7 /.degree.C. is used to configure a package, to the electrode pads of which a quartz crystal is directly soldered, without any supporting material. A quartz crystal piece is included within a flat package that use a glass-ceramic composite according to the present invention, thereby greatly limiting the variation in resonance characteristics with respect to heat treating done when the package is sealed, as compared to previous packages.

REFERENCES:
patent: 5256469 (1993-10-01), Cherukuri et al.
patent: 5525855 (1996-06-01), Gotoh et al.
"Quartz Oscillator Applicable for Surface Mounting", Electronics Update, 1990-4, pp. 83-85.
Patent Abstracts of Japan, vol. 018, No. 209, Apr. 13, 1994 & JP 06 009245 A, Jan. 18, 1994.
Patent Abstracts of Japan, vol. 014, No. 320, Jul. 10, 1990 & JP 02 105710 A, Apr. 18, 1990.
Chemical Abstracts, vol. 109, No. 12, Sep. 19, 1888 & JP 63 107 838 A, May 12, 1988.

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