Invention Grant
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
- Patent Title: Method of manufacturing a semiconductor device having different kinds of insulating films with different thicknesses
- Patent Title (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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Application No.: US12957627Application Date: 2010-12-01
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Publication No.: US08435861B2Publication Date: 2013-05-07
- Inventor: Junichi Ariyoshi , Kazutaka Yoshizawa
- Applicant: Junichi Ariyoshi , Kazutaka Yoshizawa
- Applicant Address: JP Yokohama
- Assignee: Fujitsu Semiconductor Limited
- Current Assignee: Fujitsu Semiconductor Limited
- Current Assignee Address: JP Yokohama
- Agency: Fujitsu Patent Center
- Priority: JP2009-275626 20091203
- Main IPC: H01L21/8234
- IPC: H01L21/8234 ; H01L23/58

Abstract:
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.
Public/Granted literature
- US20110136306A1 METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE Public/Granted day:2011-06-09
Information query
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