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. 26, 2006
Filed:
Sep. 02, 2003
Ignacio Blanco, Allen, TX (US);
Jin Zhao, Plano, TX (US);
Nathan Kruse, McKinney, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The present invention provides, in one embodiment, a method of manufacturing semiconductor devices. The method comprises transferring one or more substrate into a deposition chamber and depositing material layers on the substrate. The chamber has an interior surface. The method further includes, between the transfers, cleaning the deposition chamber using an in situ ramped cleaning process when material layer deposits in the deposition chamber reaches a predefined thickness. The in situ ramped cleaning process comprises forming a reactive plasma cleaning zone by dissociating a gaseous fluorocompound introduced into a deposition chamber in a presence of a plasma. The cleaning process further includes ramping a flow rate of the gaseous fluorocompound in a presence of the plasma to move the reactive plasma cleaning zone throughout the deposition chamber, thereby preventing a build-up of localized metal compound deposits on the interior surface.