Invention Grant
- Patent Title: Method for forming source/drain contacts during CMOS integration using confined epitaxial growth techniques and the resulting semiconductor devices
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Application No.: US15175540Application Date: 2016-06-07
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Publication No.: US09640535B2Publication Date: 2017-05-02
- Inventor: Hiroaki Niimi , Ruilong Xie
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Amerson Law Firm, PLLC
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L27/092 ; H01L21/8234 ; H01L29/66 ; H01L29/08 ; H01L21/285 ; H01L23/485 ; H01L21/8238 ; H01L23/532

Abstract:
A semiconductor device includes an isolation region laterally defining an active region in a semiconductor substrate, a gate structure positioned above the active region, and a sidewall spacer positioned adjacent to sidewalls of the gate structure. An etch stop layer is positioned above and covers a portion of the active region, an interlayer dielectric material is positioned above the active region and covers the etch stop layer, and a confined raised source/drain region is positioned on and in contact with an upper surface of the active region. The confined raised source/drain region extends laterally between and contacts a lower sidewall surface portion of the sidewall spacer and at least a portion of a sidewall surface of the etch stop layer, and a conductive contact element extends through the interlayer dielectric material and directly contacts an upper surface of the confined raised source/drain region.
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