Invention Grant
- Patent Title: Integrated circuit interconnect structures with air gaps
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Application No.: US16380386Application Date: 2019-04-10
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Publication No.: US11244898B2Publication Date: 2022-02-08
- Inventor: Tai-I Yang , Li-Lin Su , Yung-Hsu Wu , Hsin-Ping Chen , Cheng-Chi Chuang
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L23/528
- IPC: H01L23/528 ; H01L21/768 ; H01L23/522 ; H01L21/8234

Abstract:
Examples of an integrated circuit with an interconnect structure and a method for forming the integrated circuit are provided herein. In some examples, the method includes receiving a workpiece having an interconnect structure that includes a first conductive feature, a second conductive feature disposed beside the first conductive feature, and an inter-level dielectric disposed between the first conductive feature and the second conductive feature. A conductive material of an etch stop layer is selectively deposited on the first conductive feature and on the second conductive feature without depositing the conductive material on the inter-level dielectric, and the inter-level dielectric is removed to form a gap between the first conductive feature and the second conductive feature.
Public/Granted literature
- US20200006228A1 Integrated Circuit Interconnect Structures with Air Gaps Public/Granted day:2020-01-02
Information query
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