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Actuator using piezoelectric element and method of driving the same

A piezoelectric element and actuator technology, applied in electrical elements, piezoelectric effect/electrostrictive or magnetostrictive motors, recording/reproducing by optical methods, etc., can solve the problem of small application range and low accuracy And other issues

Inactive Publication Date: 2010-03-17
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the scope of application is small and the accuracy is low

Method used

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  • Actuator using piezoelectric element and method of driving the same
  • Actuator using piezoelectric element and method of driving the same
  • Actuator using piezoelectric element and method of driving the same

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Embodiment Construction

[0035] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0036] An actuator according to an embodiment of the present general inventive concept performs micromirror driving using a piezoelectric element, and detects displacement of a piezoelectric cell.

[0037] figure 1 An actuator using a piezoelectric element according to an embodiment of the present general inventive concept is schematically shown. refer to figure 1 , the actuator according to the current embodiment includes: a micromirror device 1 including a piezoelectric element 10 having at least one piezoelectric unit and at least one piezoelectric sensor; an error detector 5 detecting an error using capacitance of the piezoelectric sensor. figure 1 The actuator ...

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Abstract

The invention provides an actuator using a piezoelectric element and a method of driving the same. The actuator includes at least one piezoelectric cell moving by displacement according to an input voltage, at least one piezoelectric sensor sensing the displacement of the at least one piezoelectric cell, an error detector detecting an error in the at least one piezoelectric sensor, and a feedbacksignal generator generating a feedback signal corresponding to the error, thereby performing micromirror driving and sensing.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2008-0089328 filed with the Korean Intellectual Property Office on Sep. 10, 2008, the contents of which are hereby incorporated by reference. technical field [0002] Aspects of the present invention relate to an actuator using a piezoelectric element and a method of driving the same. Background technique [0003] Information storage technology using holograms has been developed. In information storage technology using holograms, information is stored in the form of optical interference patterns in light-sensitive inorganic crystal or polymer materials. An optical interference pattern is formed using two coherent laser beams. An optical interference pattern in which reference light and signal light respectively having different paths interfere with each other causes chemical or physical changes, and is recorded on a photosensitive storage medium. In order to reproduce information from the optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00G02B26/08H10N30/00H10N30/80
CPCH01L41/0825H01L41/042G02B26/0858H10N30/802H10N30/101G11B7/09G11B7/1362G11B7/0065
Inventor 郑永民李庆雨权宰焕苏亨钟金弘熙
Owner SAMSUNG ELECTRONICS CO LTD