ETCHING GAS FOR SILICON ETCH BACK

An etching gas having a good chemical property for silicon etch back is made by mixing a SF6 gas with a Cl2 gas. With addition of an inert gas, good chamber conditions are maintained during silicon etch back, and the etching selectivity for silicon to an etching stop layer is improved.

Saved in:
Bibliographic Details
Main Authors TING MU-TSUN, LEE RAY, TSAI NIEN-YU, PANG TE-HSUN
Format Patent
LanguageEnglish
Published 06.06.2002
Edition7
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
SEMICONDUCTOR DEVICES
Online AccessGet full text

Cover

More Information
Summary:An etching gas having a good chemical property for silicon etch back is made by mixing a SF6 gas with a Cl2 gas. With addition of an inert gas, good chamber conditions are maintained during silicon etch back, and the etching selectivity for silicon to an etching stop layer is improved.
Bibliography:Application Number: US19990396500