Title:
ランプ装置
Document Type and Number:
Japanese Patent JP4059127
Kind Code:
B2
Abstract:
A method of making a matrix type piezoelectric/electrostrictive device having a plurality of pillar shaped piezoelectric/electrostrictive elements, each having a piezoelectric/electrostrictive substance and at least a pair of electrodes being formed on the sides of the substance, are vertically provided on a thick ceramic substrate, such that the device is driven by displacement of the piezoelectric/electrostrictive substance. In this device, the piezoelectric/electrostrictive elements are integrally bonded to the ceramic substrate and independently arranged in two dimensions. The percentage of transgranularly fractured crystal grains on at least the sides of the piezoelectric/electrostrictive substance on which the electrodes are formed is 10% or less. The unit forms a curved surface near a joined section between the substance and the substrate.
Inventors:
Masatoshi Shimonaka
Application Number:
JP2003103569A
Publication Date:
March 12, 2008
Filing Date:
April 08, 2003
Export Citation:
Assignee:
Ushio, Inc.
International Classes:
H05B3/44; G02B6/12; G02B6/35; G02B26/00; G02B26/02; G02B26/08; H01J5/48; H01J5/50; H01J5/54; H01L27/20; H01L29/82; H01L41/04; H01L41/08; H01L41/09; H01L41/18; H01L41/187; H01L41/193; H02N2/00; H04R17/00; H05B3/02; H05B3/06
Domestic Patent References:
| JP63186089U | ||||
| JP521260Y2 | ||||
| JP392663U |
Attorney, Agent or Firm:
Tsutomu Igarata