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:
Jul. 20, 2021
Filed:
Jun. 07, 2019
Ebara Corporation, Tokyo, JP;
Naoki Shimomura, Tokyo, JP;
Mizuki Nagai, Tokyo, JP;
EBARA CORPORATION, Tokyo, JP;
Abstract
A substrate holder holds a polygonal substrate Wf. A plating bath accommodates the anode holder and the substrate holder. The anode and the substrate are immersed in a plating solution in the plating bath. A control device controls a current flowing between the anode and the substrate. The substrate holder has power feed members placed along respective sides of the polygonal substrate, and there are a plurality of groups of the sides, each group including at least one side, at least one side being different between the groups. The control device can control, on a group-by-group basis, a current to be supplied to the power feed members.