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:
Apr. 19, 1994
Filed:
Feb. 05, 1993
Hiroshi Kondo, Tokyo, JP;
Mitsuhiro Tachibana, Yamanashi, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
A system for cleaning and film-forming a semiconductor wafer continuously comprises a washing section for removing native oxide from the surface of the wafer while applying hydrofluoric acid to the silicon wafer, a load lock chamber located adjacent to the washing section and filled with the atmosphere of non-oxidizing gas, a film-forming section communicated with and shielded from the load lock chamber by a gate valve to form film on that face of the wafer which is to be processed, a first transfer robot for transferring the wafer between the washing section and the load lock chamber, and a second transfer robot for transferring the wafer between the load lock chamber and the film-forming section. Film is formed on the wafer in the film-forming section after the native oxide is removed from the wafer.