JPS5552623A - Piezo-vibrator - Google Patents

Piezo-vibrator

Info

Publication number
JPS5552623A
JPS5552623A JP12585478A JP12585478A JPS5552623A JP S5552623 A JPS5552623 A JP S5552623A JP 12585478 A JP12585478 A JP 12585478A JP 12585478 A JP12585478 A JP 12585478A JP S5552623 A JPS5552623 A JP S5552623A
Authority
JP
Japan
Prior art keywords
electrodes
vibrator
main face
piezo
vibration arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12585478A
Other languages
Japanese (ja)
Inventor
Hideo Hoshi
Shiro Kenji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP12585478A priority Critical patent/JPS5552623A/en
Publication of JPS5552623A publication Critical patent/JPS5552623A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To improve a frequency-temperature characteristic with one vibrator and make a piezo-vibrator small-size by providing exciting electrodes for fundamental wave and higher harmonic on one and the other main faces of the tuning-fork piezo-vibrator respectively. CONSTITUTION:On one main face, electrodes 10a and 10b are provided in the edge and the center of one vibration arm 9a respectively, and electrodes 10b and 10a are provided in the edge and the center of the other vibration arm 9b, and electrodes 10a and electrodes 10b are connected to each other respectively. A fundamental wave exciting electrode is arranged on this main face. Electrodes are arranged on the other main face so that directions of effective electric fields may be opposite at the boundary of a part of l2=0.7l-0.8l from the free end of the vibration arm when the length of vibration arms 9a and 9b is denoted as l. A secondary higher harmonic exciting electrode is arranged on this main face.
JP12585478A 1978-10-12 1978-10-12 Piezo-vibrator Pending JPS5552623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12585478A JPS5552623A (en) 1978-10-12 1978-10-12 Piezo-vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12585478A JPS5552623A (en) 1978-10-12 1978-10-12 Piezo-vibrator

Publications (1)

Publication Number Publication Date
JPS5552623A true JPS5552623A (en) 1980-04-17

Family

ID=14920577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12585478A Pending JPS5552623A (en) 1978-10-12 1978-10-12 Piezo-vibrator

Country Status (1)

Country Link
JP (1) JPS5552623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6791243B2 (en) * 2002-03-06 2004-09-14 Piedek Technical Laboratory Quartz crystal unit and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6791243B2 (en) * 2002-03-06 2004-09-14 Piedek Technical Laboratory Quartz crystal unit and its manufacturing method

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