Crystal oscillator and manufacturing method thereof

Details Crystal oscillator and manufacturing method thereof Crystal oscillator and manufacturing method thereof

1997-01-23

1999-09-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310315, 310358, 310361, 310366, H01L 4108

Patent

active

059558253

ABSTRACT:
A crystal oscillator and method for manufacturing same including excitation electrode portions formed upon a crystal substrate and thus forming an excitation portion of the area defined between the electrode portions. Axis inversion portions possess an electrical axis (-X) opposite to the electrical axis (X) of the excitation portion, these axis inversion portions being formed within the crystal substrate at a position other than that of the excitation portion. A stable resonance frequency and filter frequency can be obtained even under conditions of ambient temperature fluctuation, by means of a relatively simple temperature compensation circuit, wherein handling is easy and no complicated adjustment is necessary, and low costs can be realized.

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patent: 5557968 (1996-09-01), Krempl et al.
patent: 5574414 (1996-11-01), Ogawa et al.

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