GB918652A - Piezoelectric crystal device - Google Patents

Piezoelectric crystal device

Info

Publication number
GB918652A
GB918652A GB2397561A GB2397561A GB918652A GB 918652 A GB918652 A GB 918652A GB 2397561 A GB2397561 A GB 2397561A GB 2397561 A GB2397561 A GB 2397561A GB 918652 A GB918652 A GB 918652A
Authority
GB
United Kingdom
Prior art keywords
unmetallized
crystal
electrodes
piezo
july
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.)
Expired
Application number
GB2397561A
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.)
Ebauches SA
Original Assignee
Ebauches SA
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 Ebauches SA filed Critical Ebauches SA
Publication of GB918652A publication Critical patent/GB918652A/en
Expired 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • G04F5/063—Constructional details
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape

Landscapes

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

Abstract

918,652. Piezo-electric crystals. EBAUCHES S.A. July 3, 1961 [July 6, 1960], No. 23975/61. Class 40 (8). A piezo-electric thicknessshear resonator has electrodes disposed parallel to the major faces of the crystal section, the electrodes having a central unmetallized portion. In the example shown, a quartz disc, of e.g. AT cut, is provided with annular electrodes 2 having central unmetallized portions 3. Both the resistance and the inductance of the crystal increase as the unmetallized area increases, but since the ratio L/R increases also, there is an improvement in the Q of the crystal. Unmetallized marginal portions 4, 5 are left for the attachment of clips. In a further example (Figs. 3, 4, not shown), the unmetallized area is in the form of a rectangle with sides parallel to the X and Z<SP>1</SP> axes. The disc may have plane parallel faces with bevelled edges, or may be lenticular in section.
GB2397561A 1960-07-06 1961-07-03 Piezoelectric crystal device Expired GB918652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR832249A FR1269750A (en) 1960-07-06 1960-07-06 Piezoelectric crystal

Publications (1)

Publication Number Publication Date
GB918652A true GB918652A (en) 1963-02-13

Family

ID=8735016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2397561A Expired GB918652A (en) 1960-07-06 1961-07-03 Piezoelectric crystal device

Country Status (5)

Country Link
CH (2) CH373707A (en)
DE (1) DE1416068A1 (en)
FR (1) FR1269750A (en)
GB (1) GB918652A (en)
NL (1) NL266716A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009531A1 (en) * 1979-03-12 1980-09-25 Seikosha Kk PIEZOELECTRIC THICK SWING
GB2118773A (en) * 1982-03-24 1983-11-02 Gen Electric Plc Thickness shear mode piezoelectric devices
US5117147A (en) * 1989-11-08 1992-05-26 Murata Manufacturing Co., Ltd. Piezoelectric vibrating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52101379U (en) * 1976-01-29 1977-08-01

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009531A1 (en) * 1979-03-12 1980-09-25 Seikosha Kk PIEZOELECTRIC THICK SWING
FR2451665A1 (en) * 1979-03-12 1980-10-10 Seikosha Kk PIEZOELECTRIC RESONATOR OPERATING IN THICKNESS SHEAR MODE
GB2118773A (en) * 1982-03-24 1983-11-02 Gen Electric Plc Thickness shear mode piezoelectric devices
US5117147A (en) * 1989-11-08 1992-05-26 Murata Manufacturing Co., Ltd. Piezoelectric vibrating device

Also Published As

Publication number Publication date
CH732361A4 (en) 1963-06-29
CH373707A (en) 1963-06-29
NL266716A (en)
DE1416068A1 (en) 1968-11-28
FR1269750A (en) 1961-08-18

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