发明授权
US4498045A Apparatus and method for determining surface contour of piezoelectric wafers 失效
用于确定压电晶片表面轮廓的装置和方法

  • 专利标题: Apparatus and method for determining surface contour of piezoelectric wafers
  • 专利标题(中): 用于确定压电晶片表面轮廓的装置和方法
  • 申请号: US382426
    申请日: 1982-05-27
  • 公开(公告)号: US4498045A
    公开(公告)日: 1985-02-05
  • 发明人: Lawrence N. Dworsky
  • 申请人: Lawrence N. Dworsky
  • 申请人地址: IL Schaumburg
  • 专利权人: Motorola, Inc.
  • 当前专利权人: Motorola, Inc.
  • 当前专利权人地址: IL Schaumburg
  • 主分类号: G01B7/06
  • IPC分类号: G01B7/06 G01B7/28 G01N27/00
Apparatus and method for determining surface contour of piezoelectric
wafers
摘要:
An apparatus and a method utilizing a localized electrical field to precisely determine the surface contour of a substantially flat wafer of piezoelectric material having a slight convexity in its opposing faces.
公开/授权文献
信息查询
0/0