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:
Nov. 27, 2012
Filed:
Sep. 01, 2009
Akira Murata, Koshi, JP;
Akira Murata, Koshi, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
Disclosed is a gas treatment apparatus which can reduce the useless liquid quantity without using an expensive device, such as the evaporator or the mass flowmeter. The control mechanism performs control for exhausting the raw material storage container to make the raw material storage container have a predetermined vacuum pressure, stopping exhaustion to make the raw material storage container be in a sealed state, making the inside of the raw material storage container have the treatment gas atmosphere formed by gasifying the liquid raw material by the vacuum pressure within the raw material storage container, exhausting the chamber to make the chamber have a predetermined vacuum pressure in a state where the target substrate is received in the chamber, stopping the exhaustion to make the inside of the chamber be in a sealed state, opening the opening/closing valve to introduce the treatment gas from the raw material storage container to the chamber, and closing the opening/closing valve when the inside pressure of the chamber reaches a treatment pressure that is higher than the vacuum pressure and lower than a vapor pressure of the liquid raw material to make the chamber have the treatment gas atmosphere of the treatment pressure.