GB1014662A - Improvements in piezo-electric quartz crystals - Google Patents

Improvements in piezo-electric quartz crystals

Info

Publication number
GB1014662A
GB1014662A GB103763A GB103763A GB1014662A GB 1014662 A GB1014662 A GB 1014662A GB 103763 A GB103763 A GB 103763A GB 103763 A GB103763 A GB 103763A GB 1014662 A GB1014662 A GB 1014662A
Authority
GB
United Kingdom
Prior art keywords
axis
electrodes
cut
degrees
plate
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
GB103763A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1014662A publication Critical patent/GB1014662A/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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
    • 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

Landscapes

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

Abstract

1,014,662. Piezoelectric crystals. PHILIPS ELECTRIC & ASSOCIATED INDUSTRIES Ltd. Jan. 9, 1963 [Jan. 12, 1962], No. 1037/63. Heading H1E. The electrodes adjacent the two long edges of a quartz NT-cut or MT-cut crystal plate are extended around the long edges on to the adjacent side faces. The NT and MT cuts are derived from an X cut plate by a clockwise rotation of about 8.5 degrees about the X axis, the rotation being considered from the positive end of this axis. Thereafter, further rotations of 60 degrees and of 36 degrees about the Y<SP>1</SP> axis define respectively the NT (Fig. 3), MT (Fig. 4) cuts. When used in a flexural mode, the NT plate is provided with electrodes in the form of longitudinal strips 5, 7, 9, 11 which are crossconnected. The pairs of electrodes most remote from each other in the X direction (7 and 9) are extended to provide electrodes 13, 15 on the side faces. By this means, the mean orientation of the electric field corresponds more closely with the direction of the X axis. As a result, the ratio of the parallel to the series capacitance (C 0 /C 1 ) is reduced and the bandwidth improved. Fig. 4 shows the application to a MT-cut longitudinal oscillator.
GB103763A 1962-01-12 1963-01-09 Improvements in piezo-electric quartz crystals Expired GB1014662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL273491 1962-01-12

Publications (1)

Publication Number Publication Date
GB1014662A true GB1014662A (en) 1965-12-31

Family

ID=19753527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB103763A Expired GB1014662A (en) 1962-01-12 1963-01-09 Improvements in piezo-electric quartz crystals

Country Status (3)

Country Link
DE (1) DE1247415B (en)
GB (1) GB1014662A (en)
NL (1) NL273491A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304459A (en) * 1990-04-27 1994-04-19 Seiko Epson Corporation At-cut crystal oscillating reed and method of etching the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11186869A (en) * 1997-12-24 1999-07-09 Murata Mfg Co Ltd Lamination type thickness longitudinal piezoelectric resonator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763329C (en) * 1941-04-29 1954-10-18 Siemens & Halske A G Quartz crystal executing bending vibrations
DE1113477B (en) * 1958-02-03 1961-09-07 Marconi Wireless Telegraph Co Piezoelectric bender vibrating in its XY plane and process for its manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5314577A (en) * 1990-04-26 1994-05-24 Seiko Epson Corporation At-cut crystal oscillating reed and method of etching the same
US5304459A (en) * 1990-04-27 1994-04-19 Seiko Epson Corporation At-cut crystal oscillating reed and method of etching the same
US5376861A (en) * 1990-04-27 1994-12-27 Seiko Epson Corporation At-cut crystal oscillating reed and method of etching the same

Also Published As

Publication number Publication date
DE1247415B (en) 1967-08-17
NL273491A (en)

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