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:
Aug. 28, 2001
Filed:
Jul. 23, 1999
Unaxis Balzers Aktiengesellschaft, Fuerstentum, LT;
Abstract
A capacitively coupled RF plasma reactor allows treatment of large workpiece surfaces with an accurate control of ion bombardment onto the respective electrode surfaces and thus an adjacent workpiece, be it to a desired low or to a desired high level. The reactor includes a first and a second electrode arrangement mutually spaced and confining a plasma reaction volume, at lest one of the electrode arrangements comprising electrically mutually isolated sub-electrodes, a first group of the sub-electrodes being commonly connected to a first electric input, and a second group of the sub-electrodes being commonly connected to a second electric input. The reactor thus substitutes at least one of the two customarily used reactor electrodes by an array of sub-electrodes which, by way of their respective first and second electric inputs, may be independently and thus differently electrically operated, usually but not exclusively with RF voltages.