Title:
PIEZOELECTRIC RESONATOR AND PIEZOELECTRIC RESONATOR DEVICE
Document Type and Number:
Japanese Patent JP3942014
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric oscillator and a piezoelectric oscillator device which are resonant at high frequencies, using a fundamental wave, easy to obtain satisfactory characteristics, even if there is a thickness variation of a piezoelectric board for forming driving electrodes, and manufacturable by a method superior in mass production, such as bevel machining at a comparatively low cost.
SOLUTION: The device comprises a piezoelectric board 1, having a convex lens-like sectional shape and a pair of opposed drive electrodes 2, 3 on sloped main surfaces of one end portion of the board 1. The slope angle θ of each sloped main surface of the one end portion of the board 1 is 2° or smaller. The board 1 has wedged parts 1b, gradually thinning with respect to its thickness toward the top end at both sides of the thickest portion 1a, and the drive electrodes 2, 3 on the wedged parts 1b is formed to gradually thicken toward the wedged parts to ends.
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Inventors:
Michiaki Nishimura
Hirokazu Tsuyoshi
Fujisaki Fumio
Hirokazu Tsuyoshi
Fujisaki Fumio
Application Number:
JP2002020160A
Publication Date:
July 11, 2007
Filing Date:
January 29, 2002
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
H03H9/19; H03H9/02; (IPC1-7): H03H9/19; H03H9/02
Domestic Patent References:
| JP7254839A | ||||
| JP11340775A | ||||
| JP62239707A | ||||
| JP52091676A | ||||
| JP54019694A |
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