JPS5714292A - Electret device - Google Patents

Electret device

Info

Publication number
JPS5714292A
JPS5714292A JP8878780A JP8878780A JPS5714292A JP S5714292 A JPS5714292 A JP S5714292A JP 8878780 A JP8878780 A JP 8878780A JP 8878780 A JP8878780 A JP 8878780A JP S5714292 A JPS5714292 A JP S5714292A
Authority
JP
Japan
Prior art keywords
electret
dielectric substance
members
channel shape
electret member
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
JP8878780A
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 JP8878780A priority Critical patent/JPS5714292A/en
Publication of JPS5714292A publication Critical patent/JPS5714292A/en
Priority to US06/499,873 priority patent/US4441038A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To uniformly distribute and to increase the protection of an electret member, by inserting a plurality of members in channel shape at the circumference between an electret member and a dielectric substance of an electret element for bonding. CONSTITUTION:An electret member 22 made of macropolymer film such as PP, TFE, FEP is coated to a back electrode 21 made of a conductive metallic base to form an electret element 23. A dielectric substance 24 made of a conductive metal material of organic substance having the equal area shape as the member 22 is fixed to the element 23 with channel shape members 201, 202. Although the nonelectret part is present in the electret member 22, charges almost the same amount on the electret 23 are produced with uniform distribution on the entire surface of the dielectric substance 24. Thus, products rich in the moisture-proof and stable in the characteristics can be manufactured.
JP8878780A 1980-06-30 1980-06-30 Electret device Pending JPS5714292A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8878780A JPS5714292A (en) 1980-06-30 1980-06-30 Electret device
US06/499,873 US4441038A (en) 1980-06-30 1983-06-01 Electret device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8878780A JPS5714292A (en) 1980-06-30 1980-06-30 Electret device

Publications (1)

Publication Number Publication Date
JPS5714292A true JPS5714292A (en) 1982-01-25

Family

ID=13952547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8878780A Pending JPS5714292A (en) 1980-06-30 1980-06-30 Electret device

Country Status (1)

Country Link
JP (1) JPS5714292A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107076846A (en) * 2014-11-18 2017-08-18 罗伯特·博世有限公司 Electronic-controlled installation for radar sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107076846A (en) * 2014-11-18 2017-08-18 罗伯特·博世有限公司 Electronic-controlled installation for radar sensor
US10591585B2 (en) 2014-11-18 2020-03-17 Robert Bosch Gmbh Electronic control unit for radar sensors

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