Invention Grant
- Patent Title: Method for manufacturing semiconductor device
- Patent Title (中): 制造半导体器件的方法
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Application No.: US14578578Application Date: 2014-12-22
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Publication No.: US09117662B2Publication Date: 2015-08-25
- Inventor: Atsuo Isobe , Kunio Hosoya
- Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 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: Fish & Richardson P.C.
- Priority: JP2012-024010 20120207
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L21/02 ; H01L29/66 ; H01L29/786
Abstract:
To improve productivity of a transistor that includes an oxide semiconductor and has good electrical characteristics. In a top-gate transistor including a gate insulating film and a gate electrode over an oxide semiconductor film, a metal film is formed over the oxide semiconductor film, oxygen is added to the metal film to form a metal oxide film, and the metal oxide film is used as a gate insulating film. After an oxide insulating film is formed over the oxide semiconductor film, a metal film may be formed over the oxide insulating film. Oxygen is added to the metal film to form a metal oxide film and added also to the oxide semiconductor film or the oxide insulating film.
Public/Granted literature
- US20150140731A1 METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE Public/Granted day:2015-05-21
Information query
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