Invention Grant
- Patent Title: Method for forming source/drain contacts
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Application No.: US16170674Application Date: 2018-10-25
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Publication No.: US10593765B2Publication Date: 2020-03-17
- Inventor: Soon Aik Chew , Steven Demuynck
- Applicant: IMEC VZW
- Applicant Address: BE Leuven
- Assignee: IMEC VZW
- Current Assignee: IMEC VZW
- Current Assignee Address: BE Leuven
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Priority: EP17199711 20171102
- Main IPC: H01L29/51
- IPC: H01L29/51 ; H01L29/40 ; H01L21/311 ; H01L21/3105 ; H01L29/66 ; H01L29/417 ; H01L21/768

Abstract:
Example embodiments relate to methods for forming source/drain contacts. One embodiment includes a method for forming a source contact and a drain contact in a semiconductor structure. The method includes providing a semiconductor structure that includes a semiconductor active area having channel, source, and drain regions, a gate structure on the channel region, a gate plug on the gate structure, spacers lining side walls of the gate structure and of the gate plug, an etch stop layer covering the source and gain regions, a sacrificial material on the etch stop layer over the source and drain regions, and a masking structure that masks the source and drain regions. The method also includes forming gaps, removing the masking structure, filling the gaps, exposing the sacrificial material, removing the sacrificial material, removing the etch stop layer, and forming the source contact and the drain contact by depositing a conductive material.
Public/Granted literature
- US20190131411A1 Method for Forming Source/Drain Contacts Public/Granted day:2019-05-02
Information query
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