Jordan and Hamburg LLP
Piezoelectric resonator and sensing sensor
Objects of the present invention is to provide a piezoelectric resonator having high frequency stability and a sensing sensor using the piezoelectric resonator.In the present invention, a piezoelectric resonator 1 has: a first oscillation area 105 which is provided in a piezoelectric piece 100 and from which a first oscillation frequency is taken out; a second oscillation area which is provided in an area 105 different from the first oscillation area 106 via an elastic boundary area 107 and from which a second oscillation frequency is taken out; and excitation electrodes 101 to 103 provided on one surface side and another surface side of the oscillation areas 105, 106 across the piezoelectric piece 100, and a frequency difference between the first oscillation frequency and the second oscillation frequency is not less than 0.2% nor greater than 2.2% of these oscillation frequencies.
Nihon Dempa Kogyo Co., Ltd.
G G H H G H G G H H G H H H
G01G G01G H03H H03H G01N H03H G01N G01N H03H H03B G01G H03H H03H H03H
inventional inventional inventional additional additional additional inventional additional inventional additional inventional inventional additional inventional
Shigenori Takeru Mitsuaki
Watanabe Mutoh Koyama