JPS5492087A - Manufacture of thin-cauge crystal oscillator - Google Patents

Manufacture of thin-cauge crystal oscillator

Info

Publication number
JPS5492087A
JPS5492087A JP15927277A JP15927277A JPS5492087A JP S5492087 A JPS5492087 A JP S5492087A JP 15927277 A JP15927277 A JP 15927277A JP 15927277 A JP15927277 A JP 15927277A JP S5492087 A JPS5492087 A JP S5492087A
Authority
JP
Japan
Prior art keywords
connection part
corrosion
frame
crystal oscillator
oscillator bar
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
JP15927277A
Other languages
Japanese (ja)
Inventor
Masatoshi Kobayashi
Hiroyuki Fujii
Joji Shimakawa
Yukio Hara
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.)
Matsushima Kogyo KK
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Matsushima Kogyo KK
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 Matsushima Kogyo KK, Seiko Epson Corp, Suwa Seikosha KK filed Critical Matsushima Kogyo KK
Priority to JP15927277A priority Critical patent/JPS5492087A/en
Publication of JPS5492087A publication Critical patent/JPS5492087A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To prevent occurrence of the crack or the like at the oscillator bar when it is cut off, by forming the connection part between the crystal oscillator bar and the frame thinner than the frame. CONSTITUTION:Protective film 19a and 19b are formed on crystal wafer 18 in the forms of the oscillator bar and the frame each, and space 22 which is narrow enough compared with part 21 where the corrosion punching is applied is secured at connection part 20. As space 25 of the connection part is narrow sufficiently in comparison with corrosion punching part 24, the slowest corrosion velocity is obtained. With selection of a proper corrosion time, the sufficient corrosion is not given to concavity 28. Thus, connection part 23 thinner than frame 27 is formed. Therefore, the unnecessary connection part does not remain to the crystal oscillator bar and with no crack occurred.
JP15927277A 1977-12-29 1977-12-29 Manufacture of thin-cauge crystal oscillator Pending JPS5492087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15927277A JPS5492087A (en) 1977-12-29 1977-12-29 Manufacture of thin-cauge crystal oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15927277A JPS5492087A (en) 1977-12-29 1977-12-29 Manufacture of thin-cauge crystal oscillator

Publications (1)

Publication Number Publication Date
JPS5492087A true JPS5492087A (en) 1979-07-20

Family

ID=15690143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15927277A Pending JPS5492087A (en) 1977-12-29 1977-12-29 Manufacture of thin-cauge crystal oscillator

Country Status (1)

Country Link
JP (1) JPS5492087A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157211A (en) * 1982-03-13 1983-09-19 Kinseki Kk Manufacture of piezoelectric diaphragm
FR2577362A1 (en) * 1985-02-13 1986-08-14 Ebauchesfabrik Eta Ag METHOD FOR MANUFACTURING HIGH FREQUENCY QUARTZ RESONATORS
JP2008177723A (en) * 2007-01-17 2008-07-31 River Eletec Kk Crystal oscillator, crystal resonator and quartz wafer
JP2008178021A (en) * 2007-01-22 2008-07-31 Epson Toyocom Corp Tuning fork type piezoelectric vibrating chip, aggregate thereof, and method of manufacturing tuning fork type piezoelectric vibrating chip

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157211A (en) * 1982-03-13 1983-09-19 Kinseki Kk Manufacture of piezoelectric diaphragm
FR2577362A1 (en) * 1985-02-13 1986-08-14 Ebauchesfabrik Eta Ag METHOD FOR MANUFACTURING HIGH FREQUENCY QUARTZ RESONATORS
JP2008177723A (en) * 2007-01-17 2008-07-31 River Eletec Kk Crystal oscillator, crystal resonator and quartz wafer
JP2008178021A (en) * 2007-01-22 2008-07-31 Epson Toyocom Corp Tuning fork type piezoelectric vibrating chip, aggregate thereof, and method of manufacturing tuning fork type piezoelectric vibrating chip

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