发明授权
US08435861B2 Method of manufacturing a semiconductor device having different kinds of insulating films with different thicknesses
有权
制造具有不同种类的具有不同厚度的绝缘膜的半导体器件的制造方法
- 专利标题: Method of manufacturing a semiconductor device having different kinds of insulating films with different thicknesses
- 专利标题(中): 制造具有不同种类的具有不同厚度的绝缘膜的半导体器件的制造方法
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申请号: US12957627申请日: 2010-12-01
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公开(公告)号: US08435861B2公开(公告)日: 2013-05-07
- 发明人: Junichi Ariyoshi , Kazutaka Yoshizawa
- 申请人: Junichi Ariyoshi , Kazutaka Yoshizawa
- 申请人地址: JP Yokohama
- 专利权人: Fujitsu Semiconductor Limited
- 当前专利权人: Fujitsu Semiconductor Limited
- 当前专利权人地址: JP Yokohama
- 代理机构: Fujitsu Patent Center
- 优先权: JP2009-275626 20091203
- 主分类号: H01L21/8234
- IPC分类号: H01L21/8234 ; H01L23/58
摘要:
A method of manufacturing a semiconductor device includes oxidizing a surface of a semiconductor substrate to form a first insulating film covering a first area, a second area, and a third area of the semiconductor substrate; removing the portions of the first insulating film lying on the first area and the second area; oxidizing the surface of the semiconductor substrate to form a second insulating film covering the first area and the second area and further oxidizing the third area covered with the first insulating film; and removing the portion of the second insulating film lying on from the second area and the portion of the first insulating film lying on the third area.
公开/授权文献
- US20110136306A1 METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE 公开/授权日:2011-06-09
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