Invention Grant
- Patent Title: Semiconductor device and method for manufacturing semiconductor device
- Patent Title (中): 半导体装置及半导体装置的制造方法
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Application No.: US13297474Application Date: 2011-11-16
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Publication No.: US08728883B2Publication Date: 2014-05-20
- Inventor: Shunpei Yamazaki , Masahiro Takahashi , Tetsunori Maruyama
- Applicant: Shunpei Yamazaki , Masahiro Takahashi , Tetsunori Maruyama
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2010-267896 20101130; JP2010-267901 20101130
- Main IPC: H01L21/84
- IPC: H01L21/84 ; H01L29/66

Abstract:
A highly reliable semiconductor device is manufactured by giving stable electric characteristics to a transistor in which an oxide semiconductor film is used for a channel. An oxide semiconductor film which can have a first crystal structure by heat treatment and an oxide semiconductor film which can have a second crystal structure by heat treatment are formed so as to be stacked, and then heat treatment is performed; accordingly, crystal growth occurs with the use of an oxide semiconductor film having the second crystal structure as a seed, so that an oxide semiconductor film having the first crystal structure is formed. An oxide semiconductor film formed in this manner is used for an active layer of the transistor.
Public/Granted literature
- US20120132903A1 SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE Public/Granted day:2012-05-31
Information query
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