JPWO2005008797A1 - アクチュエータ素子及びアクチュエータ素子を有する装置 - Google Patents
アクチュエータ素子及びアクチュエータ素子を有する装置 Download PDFInfo
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
- G02B26/0858—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting means being moved or deformed by piezoelectric means
-
- 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
- H10N30/2047—Membrane type
-
- 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
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/872—Interconnections, e.g. connection electrodes of multilayer piezoelectric or electrostrictive devices
- H10N30/874—Interconnections, e.g. connection electrodes of multilayer piezoelectric or electrostrictive devices embedded within piezoelectric or electrostrictive material, e.g. via connections
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
- G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
- G02B6/3578—Piezoelectric force
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
Description
12…板部材
14…圧電/電歪体 16…桟
18、18a、18b…スペーサ 20…駆動領域
22、106…接合層 24…変位伝達部材
26、26A、26B…圧電/電歪層 28…上部電極
30…下部電極 32…アクチュエータ部
36、50、52、54…スルーホール 42…中間電極
100…表示装置 104…光導波板
108…光散乱層
これは、スペーサ18が例えば硬い材料で構成されている場合、スペーサ18の下面に光散乱層108のような薄い膜が形成されていると、光散乱層108の一部(スペーサ18との境界部分)に応力が集中し、圧電/電歪体14の変位の繰り返しによって、光散乱層108がやぶれるおそれがある。しかし、この実施例では、接合層106及び22を介在させたため、該接合層106及び22が緩衝層として機能し、上述のような不具合を回避することができる。
Claims (16)
- 板部材(12)と、
前記板部材(12)に対向して配された圧電/電歪体(14)と、
前記板部材(12)と前記圧電/電歪体(14)との間に配され、該圧電/電歪体(14)を前記板部材(12)に固定するための桟(16)とを有し、
前記圧電/電歪体(14)は、圧電/電歪層(26)と、該圧電/電歪層(26)のうち、前記板部材(12)と対向する面に形成された上部電極(28)と、前記圧電/電歪層(26)のうち、前記板部材(12)と対向する面と反対の面に形成された下部電極(30)とを有し、
前記上部電極(28)及び前記下部電極(30)への電界印加によって、前記圧電/電歪体(14)の一部を前記板部材(12)に対して接近又は離間する方向に変位させることを特徴とするアクチュエータ素子。 - 請求項1記載のアクチュエータ素子において、
前記上部電極(28)と下部電極(30)は、前記圧電/電歪体(14)のうち、前記桟(16)に対応する部分に形成されていることを特徴とするアクチュエータ素子。 - 請求項1記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間の領域のうち、前記桟(16)で区画された領域を駆動領域(20)としたとき、
前記上部電極(28)と下部電極(30)は、前記圧電/電歪体(14)のうち、前記駆動領域(20)に対応する部分に形成されていることを特徴とするアクチュエータ素子。 - 請求項1記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間の領域のうち、前記桟(16)で区画された領域を駆動領域(20)としたとき、
前記上部電極(28)と下部電極(30)は、前記圧電/電歪体(14)のうち、前記桟(16)と対応する部分と、前記駆動領域(20)に対応する部分とに形成されていることを特徴とするアクチュエータ素子。 - 請求項1〜4のいずれか1項に記載のアクチュエータ素子において、
前記上部電極(28)は、前記圧電/電歪層(26)に形成されたスルーホール(36)を通じて前記圧電/電歪層(26)のうち、前記下部電極(28)が形成された面と同じ面に引き出されていることを特徴とするアクチュエータ素子。 - 請求項1記載のアクチュエータ素子において、
前記圧電/電歪体(14)は、複数の圧電/電歪層(26A、26B)が積層されてなる積層体(40)と、該積層体(40)のうち、前記板部材(12)と対向する面に形成された上部電極(28)と、前記積層体(40)のうち、前記板部材(12)と対向する面と反対の面に形成された下部電極(30)と、前記積層体(40)のうち、前記圧電/電歪層(26A、26B)間に形成された中間電極(42)とを有することを特徴とするアクチュエータ素子。 - 請求項6記載のアクチュエータ素子において、
前記上部電極(28)、前記中間電極(42)及び前記下部電極(30)は、前記圧電/電歪体(14)のうち、前記桟(16)に対応する部分に形成されていることを特徴とするアクチュエータ素子。 - 請求項6記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間の領域のうち、前記桟(16)で区画された領域を駆動領域(20)としたとき、
前記上部電極(28)、前記中間電極(42)及び前記下部電極(30)は、前記圧電/電歪体(14)のうち、前記駆動領域(20)に対応する部分に形成されていることを特徴とするアクチュエータ素子。 - 請求項6記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間の領域のうち、前記桟(16)で区画された領域を駆動領域(20)としたとき、
前記上部電極(28)、前記中間電極(42)及び前記下部電極(30)は、前記圧電/電歪体(14)のうち、前記桟(16)と対応する部分と、前記駆動領域(20)に対応する部分とに形成されていることを特徴とするアクチュエータ素子。 - 請求項6〜9のいずれか1項に記載のアクチュエータ素子において、
前記上部電極(28)及び前記中間電極(42)は、前記積層体(40)に形成されたスルーホールを通じて前記積層体(40)のうち、前記下部電極(30)が形成された面と同じ面に引き出されていることを特徴とするアクチュエータ素子。 - 請求項1〜10のいずれか1項に記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間の領域のうち、前記桟(16)で区画された駆動領域(20)に前記圧電/電歪体(14)の変位を前記板部材(12)側に伝える変位伝達部(24)を有することを特徴とするアクチュエータ素子。 - 請求項11記載のアクチュエータ素子において、
前記板部材(12)が光(102)が導入される透明板(104)である場合に、
前記変位伝達部(24)上に少なくとも光散乱層(108)を有することを特徴とするアクチュエータ素子。 - 請求項1〜12のいずれか1項に記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間にスペーサ(18)が配され、
前記スペーサ(18)の上面に板部材(12)が接触し、前記スペーサ(18)の下面に圧電/電歪体(14)が接触している場合に、
前記桟(16)は、前記スペーサ(18)を含むことを特徴とするアクチュエータ素子。 - 請求項1〜12のいずれか1項に記載のアクチュエータ素子において、
前記板部材(12)と前記圧電/電歪体(14)との間にスペーサ(18)が配され、
前記スペーサ(18)の下面と圧電/電歪体(14)との間に少なくとも1層の膜(22)が形成されている場合に、
前記桟(16)は、前記スペーサ(18)と、前記膜(22)のうち、前記スペーサ(18)直下の部分とを含むことを特徴とするアクチュエータ素子。 - 請求項1〜14のいずれか1項に記載のアクチュエータ素子において、
前記桟(16)は、緩衝層を含むことを特徴とするアクチュエータ素子。 - 請求項1〜15のいずれか1項に記載のアクチュエータ素子を有する装置。
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-
2004
- 2004-06-30 WO PCT/JP2004/009204 patent/WO2005008798A1/ja not_active Application Discontinuation
- 2004-06-30 US US10/881,328 patent/US7126254B2/en not_active Expired - Fee Related
- 2004-06-30 DE DE200460031427 patent/DE602004031427D1/de not_active Expired - Lifetime
- 2004-06-30 JP JP2005511803A patent/JP4746988B2/ja not_active Expired - Fee Related
- 2004-06-30 WO PCT/JP2004/009203 patent/WO2005008797A1/ja active Application Filing
- 2004-06-30 EP EP20040746672 patent/EP1648038B1/en not_active Expired - Lifetime
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WO2005008798A1 (ja) | 2005-01-27 |
DE602004031427D1 (de) | 2011-03-31 |
WO2005008797A1 (ja) | 2005-01-27 |
US20050057120A1 (en) | 2005-03-17 |
EP1648038B1 (en) | 2011-02-16 |
JP4746988B2 (ja) | 2011-08-10 |
EP1648038A4 (en) | 2008-03-05 |
EP1648038A1 (en) | 2006-04-19 |
US7126254B2 (en) | 2006-10-24 |
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