Invention Grant
- Patent Title: Stacked piezoelectric element and vibration wave driving apparatus
- Patent Title (中): 堆叠压电元件和振动波驱动装置
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Application No.: US11696177Application Date: 2007-04-03
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Publication No.: US07808162B2Publication Date: 2010-10-05
- Inventor: Yutaka Maruyama , Tomoyoshi Kato
- Applicant: Yutaka Maruyama , Tomoyoshi Kato
- Applicant Address: JP
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2006-108862 20060411
- Main IPC: H01L41/00
- IPC: H01L41/00

Abstract:
A stacked piezoelectric element comprising a driving unit and a non-driving unit, and a vibration wave driving apparatus, which are capable of suppressing occurrences of deformation, particularly warping, that are generated during firing and polarization of the stacked piezoelectric element. A driving unit has a first conductive layer and a first piezoelectric layer consisting of a piezoelectric material, which is driven by an application of voltage to the first conductive layer to generate vibration on the stacked piezoelectric element. A non-driving unit has a plurality of second conductive layers and a plurality of second piezoelectric layers consisting of the piezoelectric material, which is arranged to have a thickness that enables generation of the vibration.
Public/Granted literature
- US20070236107A1 STACKED PIEZOELECTRIC ELEMENT AND VIBRATION WAVE DRIVING APPARATUS Public/Granted day:2007-10-11
Information query
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