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:
Dec. 04, 2001
Filed:
Mar. 08, 2000
Applicant:
Inventor:
Toshiaki Hongoh, Nakakoma-Gun, JP;
Assignee:
Tokyo Electron Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 1/600 ; H05H 1/00 ;
U.S. Cl.
CPC ...
C23C 1/600 ; H05H 1/00 ;
Abstract
A flat antenna radiates a microwave toward a process chamber so as to generate a plasma within the process chamber. The flat antenna has a front surface to which the microwave is supplied and a back surface opposite to the front surface. The microwave is supplied to a center portion of the front surface and propagates in radial directions within the flat antenna. A plurality of openings extend between the front surface and the back surface of the flat antenna. A conductive member is located in each of the openings so that a circularly polarized microwave is radiated by each of the openings.