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:
Oct. 14, 2014
Filed:
Jul. 28, 2010
Keiichi Nagakubo, Yamanashi, JP;
Takahiro Miyai, Yamanashi, JP;
Keiichi Nagakubo, Yamanashi, JP;
Takahiro Miyai, Yamanashi, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
An electrode for use in a plasma processing apparatus is provided above a lower electrode within a processing chamber so as to face the lower electrode serving as a mounting table configured to mount thereon a processing target substrate. The electrode includes an upper member provided with a plurality of gas passage holes through which a processing gas is supplied; and a lower member positioned below the upper member and provided with multiple sets of gas discharge holes through which the processing gas is discharged. Here, each gas passage hole may have a diameter larger than that of each gas discharge hole, each set of the gas discharge holes may communicate with corresponding one of the gas passage holes, and each set of the gas discharge holes may be arranged outside the rim of the corresponding one of the gas passage holes when viewed from a top thereof.