Invention Grant
- Patent Title: Method of manufacturing a semiconductor device
- Patent Title (中): 制造半导体器件的方法
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Application No.: US12659600Application Date: 2010-03-15
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Publication No.: US08399351B2Publication Date: 2013-03-19
- Inventor: Masashi Takahashi
- Applicant: Masashi Takahashi
- Applicant Address: JP Tokyo
- Assignee: Oki Semiconductor Co., Ltd.
- Current Assignee: Oki Semiconductor Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Rabin & Berdo, P.C.
- Priority: JP2009-069065 20090319
- Main IPC: H01L21/4763
- IPC: H01L21/4763

Abstract:
A semiconductor device manufacturing method includes a process for filling holes in a dielectric film with tungsten. The process deposits tungsten in the holes, partially etches the deposited tungsten, and then deposits additional tungsten in the holes. Voids that may be left by the first tungsten deposition step are made accessible by openings formed in the etching step, and are then filled in by the second tungsten deposition step. Tungsten hexafluoride may be used as both a deposition source gas and an etching gas, providing a simple and inexpensive process that is suitable for high-volume production.
Public/Granted literature
- US20100240212A1 Method of manufacturing a semiconductor device Public/Granted day:2010-09-23
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