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:
Mar. 09, 1999
Filed:
Oct. 25, 1996
Horng-Jong Wang, Taichung, TW;
Vanguard International Semiconductor Corporation, Hsinchu, TW;
Abstract
The present invention is an orientation flat aligner for preventing the angle deviation of the flat edge of the wafer. This invention applies two new designs to the aligner: (1) The two parallel rollers with different radius instead of two parallel rollers the same radii prevent the problem of the angle deviation to line up the flat edge of the wafer. (2) placing the photosensor on the orientation flat aligner instead of on the sensor bracket avoids the detection error because of the photosensor position relate to the orientation flat aligner position and saves time on checking whether the flat edge of the wafer line up or not.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile