Patent ID: 7069630
Filing Date: 2006-07-04
Classification: H01L,Y10T

Abstract:
1. A method of producing a piezoelectric/electrostrictive device using a ceramic stack as a substrate, said ceramic stack comprising a large number of stacked ceramic plates having different lengths, said piezoelectric/electrostrictive device having a piezoelectric/electrostrictive element formed on said substrate, a pair of thin plate sections formed by one or more of said ceramic plates which are long, a fixed section formed by one or more of said ceramic plates which are short and interposed between said pair of thin plate sections, and movable sections formed by one or more of said ceramic plates which are short and interposed between ends of said pair of thin plate sections, said method comprising the steps of: laminating one or more of first ceramic green sheets to be formed into said long ceramic plates of said thin plate section thereafter and one or more of second ceramic green sheets to be formed into said short ceramic plates of said fixed section and/or said movable section; applying a paste to a border between a first principal surface of said first ceramic green sheets and one or more side surfaces of said second ceramic green sheets laminated on said first principal surface, said paste being used to thereafter form an additional member including a curved surface having one or more inflection points on a cross section; further laminating said plurality of ceramic green sheets to prepare a ceramic green sheet laminate; sintering and integrating said ceramic green sheet laminate into one unit to manufacture said ceramic stack; and forming said piezoelectric/electrostrictive element on said ceramic stack, sintering, and then cutting off unnecessary portions to manufacture said piezoelectric/electrostrictive device.