Appeal No. 95-3001
Application No. 08/195,844
The disclosed invention relates to a piezoelectric resonance
device in which the width of the dielectric substrate of a
capacitor portion of the device is larger than the width of
adjacent portions of terminals.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A piezoelectric resonance device comprising:
a piezo-resonator which has oscillation electrodes provided
on front and back sides of a piezoelectric substrate and vibrates
in a shear mode;
an input terminal and an output terminal for supporting
the piezo-resonator, each of the input terminal and the output
terminal having cup portions connected with the oscillation
electrodes electrically;
a capacitor which has a common electrode on one side of a
dielectric substrate, and opposed electrodes on the other side of
the dielectric substrate spaced from one another along a first
dimension of the dielectric substrate, the opposed electrodes
being connected electrically with an outer side of the cup
portions of the terminals along said first dimension and along a
second dimension, the second dimension of the dielectric
substrate being larger than that of the cup portions of the
terminals; and
a grounding terminal which is connected electrically with
the common electrode of the capacitor.
The references relied on by the examiner are:
Yoshida 5,091,671 Feb. 25, 1992
Yoshinaga 5,184,043 Feb. 2, 1993
(filed Dec. 17, 1991)
Japanese patent publication 1-133816 Sept. 12, 1989
2
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