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. 08, 2001
Filed:
Oct. 01, 1999
Wataru Okase, Sagamihara, JP;
Masaaki Hasei, Tsukui-gun, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
A heat-treating apparatus is arranged to perform a reforming process and a crystallizing process for tantalum oxide deposited on a semiconductor wafer. The apparatus includes a worktable with a heater incorporated therein. Under the worktable, there is a heat-compensating member formed of a thin plate and having a counter surface facing the bottom surface of the worktable along the periphery. The counter surface is formed of a mirror surface having a surface roughness of Rmax=25 &mgr;m or less. Heat rays and radiant heat are reflected by the counter surface and applied to the periphery of the worktable, thereby compensating the periphery for heat loss.