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US 5,548,179 AGranted
Chip-type piezoelectric resonance component
AssigneeMurata Manufacturing Co., Ltd.
InventorHiroaki Kaida
Life of this patent
Estimating the term…
Abstract
In a chip-type piezoelectric resonance component, a piezo-resonator (3) is fixed onto a base substrate (2) and a cap member (4) is fixed to the base substrate (2) to enclose the piezo-resonator (3). The piezo-resonator (3) is provided with upper and lower surfaces having shorter and longer sides of lengths a and b at a ratio which is set in the range of .+-.10% about a value satisfying the following equation: b/a=n(-1.47.sigma.+1.88) (1) (n: integer) assuming that .sigma. represents the Poisson's ratio of a piezoelectric material.
Claims19
A chip-type piezoelectric resonance component comprising:
- a base substrate;
- a piezo-resonator being directly or indirectly fixed onto said base substrate and provided with a piezoelectric resonance part having a rectangular sectional shape with pairs of shorter and longer sides at a ratio being set in the range of .+-.10% about a value satisfying the following equation:
- b/a=n(-1.47.sigma.+1.88) (1)
- (n:
- integer)
- assuming that a and b represent the lengths of said shorter and longer sides respectively and .sigma. represents the Poisson's ratio of the material forming said piezo-resonator;
- and
- a cap member being fixed to said base substrate to enclose said piezo-resonator being fixed onto said base substrate.
5 more elements
Dependencies are inferred from the claim text.