GB0123159D0 - Application of voltages to an electro-active element - Google Patents

Application of voltages to an electro-active element

Info

Publication number
GB0123159D0
GB0123159D0 GBGB0123159.6A GB0123159A GB0123159D0 GB 0123159 D0 GB0123159 D0 GB 0123159D0 GB 0123159 A GB0123159 A GB 0123159A GB 0123159 D0 GB0123159 D0 GB 0123159D0
Authority
GB
United Kingdom
Prior art keywords
regions
layers
outer electrodes
voltages
electro
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.)
Withdrawn
Application number
GBGB0123159.6A
Other versions
GB2380315A (en
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.)
1 Ltd
Original Assignee
1 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 1 Ltd filed Critical 1 Ltd
Priority to GB0123159A priority Critical patent/GB2380315A/en
Publication of GB0123159D0 publication Critical patent/GB0123159D0/en
Publication of GB2380315A publication Critical patent/GB2380315A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end

Landscapes

  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

An electro-active element 20 including: two piezoelectric layers 21; and electrodes 22, 23 extending parallel to the layers, including: two pairs of outer electrodes 22 outside the two layers 21 in two respective regions 24, 25 between which regions the pairs of outer electrodes 22 are electrically isolated; and a centre electrode 23 between the two layers spanning the two regions. The element 20 is poled or activated by a method of simultaneously applying voltages to all the outer electrodes 22 while leaving the centre electrode 23 to float, the voltages applied to the outer electrodes 22 of a first one of the regions 24, 25 being greater than the voltages applied to the outer electrodes 22 of the second one of the regions 24, 25 so that the central electrode 23 floats at an intermediate voltage. The structural arrangement of the element 20 allows the formation of the electric fields necessary for poling or activation in opposite directions for the two layers 21 within each one of the regions 24, 25 without the need for making an electrical connection to the centre electrode 23.
GB0123159A 2001-09-26 2001-09-26 Bimrph electro-active element with floating central electrode Withdrawn GB2380315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0123159A GB2380315A (en) 2001-09-26 2001-09-26 Bimrph electro-active element with floating central electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0123159A GB2380315A (en) 2001-09-26 2001-09-26 Bimrph electro-active element with floating central electrode

Publications (2)

Publication Number Publication Date
GB0123159D0 true GB0123159D0 (en) 2001-11-21
GB2380315A GB2380315A (en) 2003-04-02

Family

ID=9922743

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0123159A Withdrawn GB2380315A (en) 2001-09-26 2001-09-26 Bimrph electro-active element with floating central electrode

Country Status (1)

Country Link
GB (1) GB2380315A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920591B1 (en) * 2007-09-04 2009-12-18 Renault Sas ELECTROACTIVE MEMBRANE ACTUATOR DEVICE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2045152C3 (en) * 1970-09-11 1975-02-06 Braun Ag, 6000 Frankfurt Oscillating motor with bilaminar flexural oscillators for electrically powered dry shavers
GB1328931A (en) * 1972-03-23 1973-09-05 Creed Co Ltd Piezoelectric transducer motor arrangement
US4099211A (en) * 1976-09-13 1978-07-04 Ampex Corporation Positionable transducing mounting structure and driving system therefor
JPS5497007A (en) * 1978-01-17 1979-07-31 Sony Corp Head supporting structure

Also Published As

Publication number Publication date
GB2380315A (en) 2003-04-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)