JPS5714291A - Electret device - Google Patents

Electret device

Info

Publication number
JPS5714291A
JPS5714291A JP8878680A JP8878680A JPS5714291A JP S5714291 A JPS5714291 A JP S5714291A JP 8878680 A JP8878680 A JP 8878680A JP 8878680 A JP8878680 A JP 8878680A JP S5714291 A JPS5714291 A JP S5714291A
Authority
JP
Japan
Prior art keywords
electret
charges
dielectric substance
adhesives
conductive metal
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
JP8878680A
Other languages
Japanese (ja)
Inventor
Hiroto Wada
Masamichi Tanaka
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 JP8878680A priority Critical patent/JPS5714291A/en
Publication of JPS5714291A publication Critical patent/JPS5714291A/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, 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)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To uniform the distribution of charges surely and to increase the protection of electret material remarkably, by bonding a dielectric substance to the electret material of an electret element with adhesives. CONSTITUTION:An electret material 22 made of macropolymer film such as PP, TFE, FEP is coated on a back electrode 21 made of a conductive metal base to form an electret 23. A dielectric substance made of a conductive metal material or an organic substance having equal or less area shape as the member is bonded to the circumference of the member 22 with adhesives 20. Although the nonelectret part is in existing to the electret member 22, charges almost the same charges of the electret element 23 uniformly distributed on the surface of the dielectric substance 24. Thus, products rich in the moisture-proof and stable in the characteristics can be manufactured.
JP8878680A 1980-06-30 1980-06-30 Electret device Pending JPS5714291A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8878680A JPS5714291A (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
JP8878680A JPS5714291A (en) 1980-06-30 1980-06-30 Electret device

Publications (1)

Publication Number Publication Date
JPS5714291A true JPS5714291A (en) 1982-01-25

Family

ID=13952523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8878680A Pending JPS5714291A (en) 1980-06-30 1980-06-30 Electret device

Country Status (1)

Country Link
JP (1) JPS5714291A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63297591A (en) * 1987-05-28 1988-12-05 Shiyoukoushiya:Kk Manufacture of metal mold
JPH02121213U (en) * 1989-03-15 1990-10-02

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63297591A (en) * 1987-05-28 1988-12-05 Shiyoukoushiya:Kk Manufacture of metal mold
JPH02121213U (en) * 1989-03-15 1990-10-02

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