Invention Grant
- Patent Title: Method of concurrently forming source/drain and gate contacts and related device
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Application No.: US15708911Application Date: 2017-09-19
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Publication No.: US10665586B2Publication Date: 2020-05-26
- Inventor: Ruilong Xie , Cheng Chi
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L27/088
- IPC: H01L27/088 ; H01L29/66 ; H01L29/45 ; H01L29/08 ; H01L21/768 ; H01L23/485 ; H01L29/417 ; H01L21/02 ; H01L21/3105 ; H01L21/285 ; H01L21/8234 ; H01L21/311

Abstract:
A method of concurrently forming source/drain contacts (CAs) and gate contacts (CBs) and device are provided. Embodiments include forming metal gates (PC) and source/drain (S/D) regions over a substrate; forming an ILD over the PCs and S/D regions; forming a mask over the ILD; concurrently patterning the mask for formation of CAs adjacent a first portion of each PC and CBs over a second portion of the PCs; etching through the mask, forming trenches extending through the ILD down to a nitride capping layer formed over each PC and a trench silicide (TS) contact formed over each S/D region; selectively growing a metal capping layer over the TS contacts formed over the S/D regions; removing the nitride capping layer from the second portion of each PC; and metal filling the trenches, forming the CAs and CBs.
Public/Granted literature
- US20180006028A1 METHOD OF CONCURRENTLY FORMING SOURCE/DRAIN AND GATE CONTACTS AND RELATED DEVICE Public/Granted day:2018-01-04
Information query
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