The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2017
Filed:
Feb. 23, 2015
Tokyo Electron Limited, Tokyo, JP;
Takehisa Saito, Miyagi, JP;
Takenao Nemoto, Miyagi, JP;
Koji Yamagishi, Miyagi, JP;
Hiroshi Kaneko, Miyagi, JP;
TOKYO ELECTRON LIMITED, Tokyo, JP;
Abstract
A plasma processing apparatus for alternately performing a first plasma processing step using first and second processing gases and a second plasma processing step using third and fourth processing gases. The apparatus includes: a processing container that has a dielectric window in a ceiling and removably accommodates a workpiece; an exhaust unit that evacuates the processing container; a processing gas supply unit that supplies the first, second, third, and fourth processing gases into the processing container; a first gas introduction unit including a top plate gas injection port, a dielectric window gas flow path, and a first external gas flow path; a second gas introduction unit including a sidewall gas injection port, a sidewall gas flow path, and a second external gas flow path; an electromagnetic wave supply unit that supplies electromagnetic waves into the plasma generating space; a bypass exhaust path; and an opening/closing valve.