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. 11, 2005
Filed:
May. 07, 2001
Kyungho Park, Kawasaki, JP;
Wataru Okase, Tsukui-gun, JP;
Takenobu Matsuo, Tsukui-gun, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
A contact is disposed to come into contact with a metal layer formed on a substrate being treated, the contact being in contact with a surface being treated from an opposite surface through a through hole present in a substrate. Alternatively, a contact is disposed to come into contact with a metal layer formed on a substrate, the contact coming into contact at an approximate center of the substrate. Alternatively, a plurality of needle bodies are disposed to be in electrical contact with a metal layer of a substrate being treated, thereby power supply for electrolytic polishing/plating to a substrate being treated being implemented, without restricting to a periphery of a substrate, from a plurality of points on a surface thereof. Due to any one of these, liquid treatment equipment enables to improve uniformity in plane of an electric current sent to a surface being treated and of liquid treatment.