Invention Grant
- Patent Title: Methods and apparatus for forming dual metal interconnects
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Application No.: US16516817Application Date: 2019-07-19
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Publication No.: US11075165B2Publication Date: 2021-07-27
- Inventor: Suketu A Parikh , Rong Tao , Roey Shaviv , Joung Joo Lee , Seshadri Ganguli , Shirish Pethe , David Gage , Jianshe Tang , Michael A Stolfi
- Applicant: APPLIED MATERIALS, INC.
- Applicant Address: US CA Santa Clara
- Assignee: APPLIED MATERIALS, INC.
- Current Assignee: APPLIED MATERIALS, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Moser Taboada
- Main IPC: H01L23/52
- IPC: H01L23/52 ; H01L23/528 ; H01L21/67 ; H01L23/532 ; H01L21/02 ; H01L21/321 ; H01L21/768 ; H01L23/522

Abstract:
Methods and apparatus for creating a dual metal interconnect on a substrate. In some embodiments, a first liner of a first nitride material is deposited into at least one 1× feature and at least one wider than 1× feature, the first liner has a thickness of less than or equal to approximately 12 angstroms; a second liner of a first metal material is deposited into the at least one 1× feature and at least one wider than 1× feature; the first metal material is reflowed such that the at least one 1× feature is filled with the first metal material and the at least one wider than 1× feature remains unfilled with the first metal material; a second metal material is deposited on the first metal material, and the second metal material is reflowed such that the at least one wider than 1× feature is filled with the second metal material.
Public/Granted literature
- US20210020569A1 METHODS AND APPARATUS FOR FORMING DUAL METAL INTERCONNECTS Public/Granted day:2021-01-21
Information query
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