Patent ID: 9041476
Filing Date: 2015-05-26
Classification: H01L,H03H

Abstract:
1. A crystal controlled oscillator, comprising: a crystal package with an insulating container that houses a crystal resonator; and an IC chip board that includes an IC chip integrating an oscillator circuit, the oscillator circuit being configured to generate an oscillation signal of a predetermined frequency based on a vibration signal of the crystal resonator, wherein the crystal package includes: the crystal resonator includes a crystal piece, an upper side excitation electrode on an upper surface of the crystal piece, and a lower side excitation electrode on a lower surface of the crystal piece, and the IC chip integrates an oscillator circuit disposed at an outer bottom surface of the first bottom wall layer of the crystal package, the oscillator circuit connecting to the lower side excitation electrode of the crystal resonator from the external terminal to an input side with high impedance, the oscillator circuit connecting to the upper side excitation electrode to an output side with low impedance, the upper side excitation electrode being a shielding electrode of the crystal resonator.