Invention Grant
- Patent Title: Epitaxial source/drain differential spacers
- Patent Title (中): 外延源/漏差分隔离器
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Application No.: US14559300Application Date: 2014-12-03
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Publication No.: US09401365B2Publication Date: 2016-07-26
- Inventor: Manoj Mehrotra
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Frank D. Cimino
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L27/11 ; H01L21/8238 ; H01L27/092 ; H01L21/265 ; H01L29/78 ; H01L29/165 ; H01L21/266 ; H01L21/308

Abstract:
A process of forming an integrated circuit containing a first transistor and a second transistor of the same polarity, by forming an epitaxial spacer layer over gates of both transistors, performing an epitaxial spacer anisotropic etch process to form epitaxial spacers on vertical surfaces adjacent to the first transistor gate and removing the epitaxial spacer layer from the second transistor gate, subsequently performing a source/drain etch process and a source/drain epitaxial process to form source/drain epitaxial regions in the substrate adjacent to the first and second gates, such that the first source/drain epitaxial regions are separated from the first gate by a lateral space which is at least 2 nanometers larger than a second lateral space separating the second source/drain epitaxial regions from the second gate. An integrated circuit formed by the recited process.
Public/Granted literature
- US20150179654A1 EPITAXIAL SOURCE/DRAIN DIFFERENTIAL SPACERS Public/Granted day:2015-06-25
Information query
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