- Patent Title: Method for producing semiconductor device and semiconductor device
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Application No.: US15263669Application Date: 2016-09-13
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Publication No.: US09972722B2Publication Date: 2018-05-15
- Inventor: Fujio Masuoka , Hiroki Nakamura
- Applicant: Unisantis Electronics Singapore Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: UNISANTIS ELECTRONICS SINGAPORE PTE. LTD.
- Current Assignee: UNISANTIS ELECTRONICS SINGAPORE PTE. LTD.
- Current Assignee Address: SG Singapore
- Agency: Brinks Gilson & Lione
- Main IPC: H01L29/423
- IPC: H01L29/423 ; H01L29/786 ; H01L29/66 ; H01L29/49 ; H01L21/28

Abstract:
A method for producing a semiconductor device includes a first step of forming a fin-shaped semiconductor layer on a semiconductor substrate and forming a first insulating film around the fin-shaped semiconductor layer; a second step of forming a pillar-shaped semiconductor layer and a first dummy gate formed of a first polysilicon; a third step of forming a second dummy gate on side walls of the first dummy gate and the pillar-shaped semiconductor layer; a fourth step of forming a side wall formed of a fifth insulating film around the second dummy gate, forming a second diffusion layer in an upper portion of the fin-shaped semiconductor layer and a lower portion of the pillar-shaped semiconductor layer, and forming a metal-semiconductor compound on the second diffusion layer; a fifth step of forming a gate electrode and a gate line; and a sixth step of depositing a sixth insulating film, forming a third resist for forming a contact hole on the pillar-shaped semiconductor layer, etching the sixth insulating film to form a contact hole on the pillar-shaped semiconductor layer, removing the third resist, depositing a second gate insulating film, depositing a second metal, etching back the second metal, removing the second gate insulating film on the pillar-shaped semiconductor layer so as to form a metal side wall on a side wall of an upper portion of the pillar-shaped semiconductor layer, and depositing a third metal so as to form a contact that connects an upper portion of the metal side wall to an upper portion of the pillar-shaped semiconductor layer.
Public/Granted literature
- US20160380116A1 METHOD FOR PRODUCING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE Public/Granted day:2016-12-29
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