发明授权
- 专利标题: Method and apparatus for high-flatness etching of wafer
- 专利标题(中): 晶圆高平面蚀刻的方法和装置
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申请号: US278132申请日: 1994-07-21
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公开(公告)号: US5474644A公开(公告)日: 1995-12-12
- 发明人: Tadahiro Kato , Hideo Kudo
- 申请人: Tadahiro Kato , Hideo Kudo
- 申请人地址: JPX Tokyo
- 专利权人: Shin-Etsu Handotai Co., Ltd.
- 当前专利权人: Shin-Etsu Handotai Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX5-208961 19930730
- 主分类号: H01L21/306
- IPC分类号: H01L21/306 ; B05C5/00
摘要:
A method and an apparatus for high-flatness etching a semiconductor single crystal wafer wherein said wafer is so rotated in a flow of an ethchant radially spreading in a plane that the main surface of said wafer may move parallelly with the flow of said etchant.
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