JPS5684018A - Rectangula at-cut quartz oscillator - Google Patents

Rectangula at-cut quartz oscillator

Info

Publication number
JPS5684018A
JPS5684018A JP16116779A JP16116779A JPS5684018A JP S5684018 A JPS5684018 A JP S5684018A JP 16116779 A JP16116779 A JP 16116779A JP 16116779 A JP16116779 A JP 16116779A JP S5684018 A JPS5684018 A JP S5684018A
Authority
JP
Japan
Prior art keywords
axis
quartz
angle
inflection
psi
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
JP16116779A
Other languages
Japanese (ja)
Inventor
Shunichi Monobukuro
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 JP16116779A priority Critical patent/JPS5684018A/en
Publication of JPS5684018A publication Critical patent/JPS5684018A/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
    • H03H9/02023—Characteristics of piezoelectric layers, e.g. cutting angles consisting of quartz

Landscapes

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

Abstract

PURPOSE:To miniaturize a quartz oscillator and to fix the inflection-point temperature of frequency-temperature characteristics approximately at the normal temperature, by setting in-surface rotation angle (psi) so that the inflection-point temperature with near the normal temperature within the range where width-to-thickness size ratio omega/t of a quartz bar is 2.5-1.8. CONSTITUTION:In new coordinates X, Y' and Z' rotated on the X axis from the Z axis to the left by cutting angle (theta) (approximately 35 deg.) while the positive direction of the X axis of the quartz is placed at this side, length (l), thickness (t) and width (omega) of quartz bar 1 are set in the X-axial direction, V'-axial direction and Z'-axial direction respectively and electrodes are formed on main top and reverse surfaces (X-Z' surface) of quartz bar 1. Then, when the angle between the length-l direction and the X axis considered to be in-surface rotation angle (psi) with the Y' axis regarded as an axis of rotation, angle (psi) is so set that the inflection-point temperature of each size ratio omega/t will near the normal temperature (approximately 25 deg.C) within the range where width-to-thickness size ratio omega/t is 2.5-1.8.
JP16116779A 1979-12-12 1979-12-12 Rectangula at-cut quartz oscillator Pending JPS5684018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16116779A JPS5684018A (en) 1979-12-12 1979-12-12 Rectangula at-cut quartz oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16116779A JPS5684018A (en) 1979-12-12 1979-12-12 Rectangula at-cut quartz oscillator

Publications (1)

Publication Number Publication Date
JPS5684018A true JPS5684018A (en) 1981-07-09

Family

ID=15729862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16116779A Pending JPS5684018A (en) 1979-12-12 1979-12-12 Rectangula at-cut quartz oscillator

Country Status (1)

Country Link
JP (1) JPS5684018A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2075911A3 (en) * 2007-12-28 2013-08-28 Seiko Epson Corporation Quartz crystal resonator element, quartz crystal device, and method for producing quartz crystal resonator element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2075911A3 (en) * 2007-12-28 2013-08-28 Seiko Epson Corporation Quartz crystal resonator element, quartz crystal device, and method for producing quartz crystal resonator element

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