JPS5714287A - Electret device - Google Patents

Electret device

Info

Publication number
JPS5714287A
JPS5714287A JP8878180A JP8878180A JPS5714287A JP S5714287 A JPS5714287 A JP S5714287A JP 8878180 A JP8878180 A JP 8878180A JP 8878180 A JP8878180 A JP 8878180A JP S5714287 A JPS5714287 A JP S5714287A
Authority
JP
Japan
Prior art keywords
electret
elements
members
back electrode
equal
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
JP8878180A
Other languages
Japanese (ja)
Inventor
Masamichi Tanaka
Hiroto Wada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8878180A priority Critical patent/JPS5714287A/en
Priority to GB8119537A priority patent/GB2079054B/en
Priority to DE19813125777 priority patent/DE3125777A1/en
Publication of JPS5714287A publication Critical patent/JPS5714287A/en
Priority to US06/500,831 priority patent/US4443711A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To produce charge having a potential equal to the algebraic sum of the potentials of a pair of electret elements on one back electrode, by laminating the electret elements so that the electret member's side are opposed and grounding another back electrode. CONSTITUTION:Electret elements 231, 232 coated with electret members 221, 222 made of macropolymer film such as PP, TEF, FEP with back electrodes 211, 212 made of a conductive metallic base, one of which is grounded are opposed for the electret members 221, 222 and they are laminated by clipping a dielectric substance 24 made or a conductive metallic member or organic substance having equal or less area shape than the electret member between the members. On the surface of the back electrode 212, regardless that the nonelectret part is in existing to each electret member, the electric field having equal potential to the algebraic sum of the potentials of both the electret elements 231, 232 is uniformly distributed. Thus, products rich in the moisture-proof and stable in the characteristics can be made.
JP8878180A 1980-06-30 1980-06-30 Electret device Pending JPS5714287A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8878180A JPS5714287A (en) 1980-06-30 1980-06-30 Electret device
GB8119537A GB2079054B (en) 1980-06-30 1981-06-24 Electret device
DE19813125777 DE3125777A1 (en) 1980-06-30 1981-06-30 Electret device
US06/500,831 US4443711A (en) 1980-06-30 1983-06-03 Electret device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8878180A JPS5714287A (en) 1980-06-30 1980-06-30 Electret device

Publications (1)

Publication Number Publication Date
JPS5714287A true JPS5714287A (en) 1982-01-25

Family

ID=13952386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8878180A Pending JPS5714287A (en) 1980-06-30 1980-06-30 Electret device

Country Status (1)

Country Link
JP (1) JPS5714287A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102403137A (en) * 2010-09-17 2012-04-04 三菱综合材料株式会社 Variable capacitor device
RU194091U1 (en) * 2019-08-22 2019-11-28 Закрытое Акционерное Общество "Инжиниринговый Центр "Технохим" BIMETAL METAL PACKAGE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102403137A (en) * 2010-09-17 2012-04-04 三菱综合材料株式会社 Variable capacitor device
RU194091U1 (en) * 2019-08-22 2019-11-28 Закрытое Акционерное Общество "Инжиниринговый Центр "Технохим" BIMETAL METAL PACKAGE

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