Invention Grant
- Patent Title: Method and structure of forming finFET contact
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Application No.: US16424904Application Date: 2019-05-29
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Publication No.: US10784363B2Publication Date: 2020-09-22
- Inventor: Kangguo Cheng , Peng Xu
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Fleit Intellectual Property Law
- Agent Jose Gutman
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L29/417 ; H01L27/12 ; H01L29/06 ; H01L29/78 ; H01L21/768 ; H01L21/265 ; H01L21/02

Abstract:
Various methods and structures for fabricating a contact for a semiconductor FET or FinFET device. A semiconductor FET structure includes a substrate, a source/drain region layer and source/drain contact. First and second gate spacers are adjacent respective first and second opposing sides of the source/drain contact. The source/drain contact is disposed directly on and contacting the entire source/drain region layer, and at a vertical level thereabove, the source/drain contact being recessed to a limited horizontal area continuing vertically upwards from the vertical level. The limited horizontal area horizontally extending along less than a full horizontal length of a vertical sidewall of the first and second gate spacers, and less than fully covering the source/drain region layer. A method uses a reverse contact mask to form a shape of the source/drain contact into an inverted “T” shape.
Public/Granted literature
- US20190296129A1 METHOD AND STRUCTURE OF FORMING FINFET CONTACT Public/Granted day:2019-09-26
Information query
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