Invention Grant
US08951900B2 Contact elements of a semiconductor device formed by electroless plating and excess material removal with reduced sheer forces
有权
通过无电镀形成的半导体器件的接触元件和减少的剪切力除去多余的材料
- Patent Title: Contact elements of a semiconductor device formed by electroless plating and excess material removal with reduced sheer forces
- Patent Title (中): 通过无电镀形成的半导体器件的接触元件和减少的剪切力除去多余的材料
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Application No.: US13870661Application Date: 2013-04-25
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Publication No.: US08951900B2Publication Date: 2015-02-10
- Inventor: Axel Preusse , Norbert Schroeder , Uwe Stoeckgen
- 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
- Priority: DE102010003556 20100331
- Main IPC: H01L21/20
- IPC: H01L21/20 ; H01L21/4763 ; H01L21/44 ; H01L21/768

Abstract:
The present disclosure is directed to, among other things, an illustrative method that includes forming an opening in a dielectric material of a contact level of a semiconductor device, and selectively depositing a conductive material in the opening to form a contact element therein, the contact element extending to a contact area of a circuit element and having a laterally restricted excess portion formed outside of the opening and above the dielectric material. The disclosed method further includes forming a sacrificial material layer above the dielectric material and the contact element, the sacrificial material layer surrounding the laterally restricted excess portion. Additionally, the method includes planarizing a surface topography of the contact level in the presence of the sacrificial material so as to remove the laterally restricted excess portion from above the dielectric material.
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