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:
May. 07, 2002
Filed:
Oct. 23, 2000
Kazuyoshi Haino, Chigasaki, JP;
Koichi Kazama, Nirasaki, JP;
Other;
Abstract
An inner wall protection member used to protect the inner wall of a chamber of a plasma treatment apparatus which can be used stably for a long period of time by specifying properties of glass-like carbon materials, and a plasma treatment apparatus provided with the protection member. The hollow protection member for protecting the inner wall of a plasma processing chamber is integrally formed of glass-like carbon materials with a volume resistivity of 1×10 &OHgr;·cm or less and a thermal conductivity of 5 W/m·K or more. The protection member preferably has a thickness of 4 mm or more and the average surface roughness (Ra) of the inside of the hollow structure is preferably 2.0 &mgr;m or less. The plasma processing apparatus is configured so that the inner wall protection member having the above characteristics is arranged along the inner wall of the chamber of the plasma processing apparatus, wherein the inner wall of the chamber and the protection member are electrically connected and the chamber is grounded.