Invention Application
- Patent Title: BOTTOM-UP PEALD PROCESS
- Patent Title (中): 底层PEALD工艺
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Application No.: US14861441Application Date: 2015-09-22
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Publication No.: US20160013043A1Publication Date: 2016-01-14
- Inventor: Lin-Jung Wu , Su-Horng Lin , Chi-Ming Yang
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/687 ; H01L21/285

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
- US10121653B2 Bottom-up PEALD proces Public/Granted day:2018-11-06
Information query
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