Invention Grant
- Patent Title: Bottom-up PEALD process
- Patent Title (中): 自下而上的PEALD过程
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Application No.: US13762547Application Date: 2013-02-08
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Publication No.: US09184045B2Publication Date: 2015-11-10
- Inventor: Lin-Jung Wu , Su-Horng Lin , Chi-Ming Yang
- 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: Eschweiler & Associates, LLC
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L21/02 ; H01J37/32

Abstract:
The present disclosure relates to a method and apparatus for performing a plasma enhanced ALD (PEALD) process that provides for improved step coverage. The process introduces a precursor gas into a processing chamber comprising a semiconductor workpiece. The first gas is ionized to from a plurality of ionized precursor molecules. A bias voltage is subsequently applied to the workpiece. The bias voltage attracts the ionized precursor molecules to the workpiece, so as to provide anisotropic coverage of the workpiece with the precursor gas. A reactant gas is introduced into the processing chamber. A plasma is subsequently ignited from the reactant gas, causing the reactant gas to react with the ionized precursor molecules that have been deposited onto the substrate to form a deposited layer on the workpiece.
Public/Granted literature
- US20140227861A1 Bottom-Up PEALD Process Public/Granted day:2014-08-14
Information query
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