Invention Grant
- Patent Title: Semiconductor device and method of manufacturing semiconductor device
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Application No.: US15943696Application Date: 2018-04-02
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Publication No.: US10374080B2Publication Date: 2019-08-06
- Inventor: Naoyuki Ohse , Yusuke Kobayashi , Takahito Kojima , Shinsuke Harada
- Applicant: FUJI ELECTRIC CO., LTD.
- Applicant Address: JP Kawasaki-Shi, Kanagawa
- Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee Address: JP Kawasaki-Shi, Kanagawa
- Agency: Rabin & Berdo, P.C.
- Priority: JP2017-084063 20170420
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/66 ; H01L29/417 ; H01L29/47 ; H01L29/16 ; H01L29/872 ; H01L29/06

Abstract:
On a front surface of a semiconductor base, an n−-type drift layer, a p-type base layer, an n++-type source region, and a gate trench and a contact trench penetrating the n++-type source region and the p-type base layer and reaching the n−-type drift layer are provided. The contact trench is provided separated from the gate trench. A Schottky metal is embedded in the contact trench and forms a Schottky contact with the n−-type drift layer at a side wall of the contact trench. An ohmic metal is provided at a bottom of the contact trench and forms an ohmic contact with the n−-type drift layer.
Public/Granted literature
- US20180308975A1 SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Public/Granted day:2018-10-25
Information query
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