Energy trap type piezoelectric resonator

Details Energy trap type piezoelectric resonator Energy trap type piezoelectric resonator

1999-11-01

2000-10-17

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310365, 310368, 310369, H01L 4108

Patent

active

061336734

ABSTRACT:
An energy trap type piezoelectric resonator includes a plate-like piezoelectric resonator element constructed to vibrate in a third harmonic of a longitudinal vibration mode in a thickness direction thereof and such that both main surfaces of the resonator element are laminated with sealing substrates. Sealed spaces are provided so as to allow a vibrating portion of oppositely disposed vibrating electrodes to vibrate. Sealing portions, in which the piezoelectric resonator element and the sealing substrates are joined and connected around the sealed spaces, are constructed so that when the thickness of a piezoelectric substrate is represented by t and the shortest distance to the sealing portion from the vibrating electrodes is d, the sealed spaces satisfy the relationship 0<d/t<5.

REFERENCES:
patent: 3396287 (1968-08-01), Horton
patent: 3747176 (1973-07-01), Toyoshima
patent: 4365181 (1982-12-01), Yamamoto
patent: 4876476 (1989-10-01), Kittaki et al.
patent: 5118980 (1992-06-01), Takahashi
patent: 5166570 (1992-11-01), Takahashi

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