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:
Apr. 24, 2001
Filed:
Sep. 01, 1998
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An elevator system automatically adjusts the inclination of a wafer boat during the manufacturing of semiconductor devices so that the wafers in the boat are maintained horizontal during their processing. The elevator system includes the wafer boat, a base on which the boat is supported, an elevator for loading the boat into a processing chamber and removing it from the chamber, a sensing unit for detecting the inclination of the boat relative to the horizontal, a horizontal control unit which is interposed between the base and the elevator and is drivable to maintain the boat in such a position that the wafers in the boat lie in horizontal planes, and a control unit for receiving information from the sensing unit and, based on the information, outputting a control signal to the horizontal control unit.