JPS54100688A - Crystal vibrator - Google Patents

Crystal vibrator

Info

Publication number
JPS54100688A
JPS54100688A JP686478A JP686478A JPS54100688A JP S54100688 A JPS54100688 A JP S54100688A JP 686478 A JP686478 A JP 686478A JP 686478 A JP686478 A JP 686478A JP S54100688 A JPS54100688 A JP S54100688A
Authority
JP
Japan
Prior art keywords
vibrator
crystal
bending vibration
axis
electric fields
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
JP686478A
Other languages
Japanese (ja)
Inventor
Eiji Momozaki
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP686478A priority Critical patent/JPS54100688A/en
Publication of JPS54100688A publication Critical patent/JPS54100688A/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
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To improve frequency/temperature characteristics of on bending vibration by combining two bending vibrations whose displacement directions intersect mutually, in a crystal vibrator of a relatively-low resonance frequency making use of bending vibrations. CONSTITUTION:To obtain the crystal vibrator, plate Z is turned counterclockwise on axis X by (phi) and then turned counterclockwise to axis Z on axis Y' by angle theta before being cut from an original crystal. This vibrator 61 is provided with upper and lower electrodes 62 to 65 divided, and electric fields are applied into vibrator 61 in directions of arrows 66 to 69. Further, a bending vibration inside of surface X'Y' is excited by electric fields 66 and 67 in mutually-opposite directions, and a Y'Z' bending vibration is excited by electric fields 68 and 69. Combining two vibrations improves resonance-frequency/temperature characteristics of one bending vibration. Further, a crystal plate cut at angles of (phi) and (theta) is polished to a thickness of 500mu and less and then the photo lithography manufacturing method is employed, thereby making it possible to mass-produce this vibrator.
JP686478A 1978-01-25 1978-01-25 Crystal vibrator Pending JPS54100688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP686478A JPS54100688A (en) 1978-01-25 1978-01-25 Crystal vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP686478A JPS54100688A (en) 1978-01-25 1978-01-25 Crystal vibrator

Publications (1)

Publication Number Publication Date
JPS54100688A true JPS54100688A (en) 1979-08-08

Family

ID=11650098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP686478A Pending JPS54100688A (en) 1978-01-25 1978-01-25 Crystal vibrator

Country Status (1)

Country Link
JP (1) JPS54100688A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676531A (en) * 1990-01-29 1994-03-18 Shape Inc Tape cassette and reel lock thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676531A (en) * 1990-01-29 1994-03-18 Shape Inc Tape cassette and reel lock thereof

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