G - Physics – 12 – B
Patent
G - Physics
12
B
26/14, 347/8
G12B 17/02 (2006.01) H03L 1/00 (2006.01) H05K 9/00 (2006.01) H05K 13/04 (2006.01)
Patent
CA 2025970
ABSTRACT OF THE DISCLOSURE The structure of a shield case for covering circuitry loaded on a hybrid substrate of an oscillator and thereby isolating the circuitry from the outside. The shield case has a bottom-open box-like configuration and made of a conductive material. The conductive material is implemented with alloy which absorbs vibrations and thereby Intercepts vibrations otherwise imparted from the outside to the circuitry. The physical distance between the vibration absorbing shield case and various parts of the circuitry provided on the substrate is not changed in spite of the external vibrations, whereby the oscillation frequency of the oscillator is maintained constant.
Corporation Nec
Smart & Biggar
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