NL7804323A - Very flat piezoelectric push button switch - has flat laminate comprising metal or plastics foil on piezoelectric wafer - Google Patents

Very flat piezoelectric push button switch - has flat laminate comprising metal or plastics foil on piezoelectric wafer

Info

Publication number
NL7804323A
NL7804323A NL7804323A NL7804323A NL7804323A NL 7804323 A NL7804323 A NL 7804323A NL 7804323 A NL7804323 A NL 7804323A NL 7804323 A NL7804323 A NL 7804323A NL 7804323 A NL7804323 A NL 7804323A
Authority
NL
Netherlands
Prior art keywords
flat
piezoelectric
metal
push button
button switch
Prior art date
Application number
NL7804323A
Other languages
Dutch (nl)
Original Assignee
Rosenthal Technik Ag
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 DE19772718289 external-priority patent/DE2718289A1/en
Application filed by Rosenthal Technik Ag filed Critical Rosenthal Technik Ag
Publication of NL7804323A publication Critical patent/NL7804323A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/964—Piezo-electric touch switches
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
    • H10N30/302—Sensors

Abstract

The piezoelectric pushbutton-type switch has a laminar element (4). The laminar element consists of a passive foil (11) which may be made of metal or plastics material, and there is a piezoelectric foil (5) arranged so that the slightest bending causes a voltage to appear at the contacts (6, 7, 9). the laminar structure is enclosed by a flexible cover. The advantage lies in the switch structure being very flat and it is therefore suitable for use in compact keyboards for miniature calculators.
NL7804323A 1977-04-25 1978-04-24 Very flat piezoelectric push button switch - has flat laminate comprising metal or plastics foil on piezoelectric wafer NL7804323A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772718289 DE2718289A1 (en) 1977-04-25 1977-04-25 PIEZOCERAMIC SWITCH WITH SMALL MOUNTING DEPTH
DE7712955 1977-04-25

Publications (1)

Publication Number Publication Date
NL7804323A true NL7804323A (en) 1978-10-27

Family

ID=25771916

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7804323A NL7804323A (en) 1977-04-25 1978-04-24 Very flat piezoelectric push button switch - has flat laminate comprising metal or plastics foil on piezoelectric wafer

Country Status (1)

Country Link
NL (1) NL7804323A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed