JPS5590115A - Piezoelectric device - Google Patents

Piezoelectric device

Info

Publication number
JPS5590115A
JPS5590115A JP4226079A JP4226079A JPS5590115A JP S5590115 A JPS5590115 A JP S5590115A JP 4226079 A JP4226079 A JP 4226079A JP 4226079 A JP4226079 A JP 4226079A JP S5590115 A JPS5590115 A JP S5590115A
Authority
JP
Japan
Prior art keywords
electrode
providing
piezoelectric element
folded
main
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
JP4226079A
Other languages
Japanese (ja)
Inventor
Isao Toyoshima
Eizo Otsuka
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.)
NOTO DENSHI KOGYO KK
Original Assignee
NOTO DENSHI KOGYO 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
Priority claimed from JP16302178A external-priority patent/JPS5590113A/en
Application filed by NOTO DENSHI KOGYO KK filed Critical NOTO DENSHI KOGYO KK
Priority to JP4226079A priority Critical patent/JPS5590115A/en
Priority to GB7943724A priority patent/GB2044527B/en
Priority to DE19792951888 priority patent/DE2951888A1/en
Priority to US06/105,903 priority patent/US4360754A/en
Priority to NL7909322A priority patent/NL7909322A/en
Publication of JPS5590115A publication Critical patent/JPS5590115A/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
    • H03H9/125—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
    • 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
    • H03H9/05—Holders; Supports
    • H03H9/10—Mounting in enclosures
    • H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
    • H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
    • H03H9/1028—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being held between spring terminals
    • 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 piezo-electric or electrostrictive material
    • H03H9/56—Monolithic crystal filters

Landscapes

  • 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

PURPOSE:To improve spurious characteristics by providing two mutually-independent electrodes on one surface of a piezoelectric element plate and then by providing a folded electrode which is provided on the other surface and extended to one surface. CONSTITUTION:Of one main surface of rectangular-plate piezoelectric element 23 providing contour vibration, dot electrode 24 is provided in the center, and split ring electrode 25 at the circumference. On the other entire surface of element 23, electrode 26 is provided and extended to folded electrode 26 on one main surface. Of folded electrode 27, corresponding sections provided on both main surfaces are connected together via notches 34 made at the same position. Folded electrode 27 attenuates the main part of vibration to improve spurious characteristics. Consequently, a piezoelectric device of single-line type package structure making conductive the electrode and external lead-out terminal of the piezoelectric element on one surface side can be obtained.
JP4226079A 1978-12-27 1979-04-06 Piezoelectric device Pending JPS5590115A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4226079A JPS5590115A (en) 1978-12-27 1979-04-06 Piezoelectric device
GB7943724A GB2044527B (en) 1978-12-27 1979-12-19 Piezoelectric unit and device
DE19792951888 DE2951888A1 (en) 1978-12-27 1979-12-21 PIEZOELECTRICAL ELEMENT
US06/105,903 US4360754A (en) 1978-12-27 1979-12-21 Mode suppressed piezoelectric device
NL7909322A NL7909322A (en) 1978-12-27 1979-12-27 PIEZO ELECTRICAL ELEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16302178A JPS5590113A (en) 1978-12-27 1978-12-27 Piezoelectric device
JP4226079A JPS5590115A (en) 1978-12-27 1979-04-06 Piezoelectric device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP16302178A Division JPS5590113A (en) 1978-12-27 1978-12-27 Piezoelectric device

Publications (1)

Publication Number Publication Date
JPS5590115A true JPS5590115A (en) 1980-07-08

Family

ID=26381913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4226079A Pending JPS5590115A (en) 1978-12-27 1979-04-06 Piezoelectric device

Country Status (1)

Country Link
JP (1) JPS5590115A (en)

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