Invention Grant
- Patent Title: Method for producing pillar-shaped semiconductor device
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Application No.: US16992352Application Date: 2020-08-13
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Publication No.: US11380780B2Publication Date: 2022-07-05
- Inventor: Fujio Masuoka , Nozomu Harada , Yoshiaki Kikuchi
- 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: Crowell & Moring LLP
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/225 ; H01L21/308 ; H01L21/02 ; H01L21/306 ; H01L29/423 ; H01L29/786

Abstract:
A SiO2 layer 5 is formed in the bottom portion of a Si pillar 3 and on an i-layer substrate 2. Subsequently, a gate HfO2 layer 11b is formed so as to surround the side surface of the Si pillar 3, and a gate TiN layer 12b is formed so as to surround the HfO2 layer 11b. Subsequently, P+ layers 18 and 32 containing an acceptor impurity at a high concentration and serving as a source and a drain are simultaneously or separately formed by a selective epitaxial crystal growth method on the exposed side surface of the bottom portion of and on the top portion of the Si pillar 3. Thus, an SGT is formed on the i-layer substrate 2.
Public/Granted literature
- US20200373415A1 METHOD FOR PRODUCING PILLAR-SHAPED SEMICONDUCTOR DEVICE Public/Granted day:2020-11-26
Information query
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