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:
Nov. 24, 2020
Filed:
Mar. 30, 2017
Ebara Corporation, Tokyo, JP;
Hidetatsu Isokawa, Tokyo, JP;
EBARA CORPORATION, Tokyo, JP;
Abstract
A teaching apparatus is provided with an arm-side position sensor attached to arms, a dummy wafer placed on a stage, a dummy-wafer-side position sensor attached to the dummy wafer, and a signal receiver configured to receive a position signal from the arm-side position sensor to determine a position coordinate of the arm-side position sensor, and receive a position signal from the dummy-wafer-side position sensor to determine a position coordinate of the dummy-wafer-side position sensor. A control part, based on the position coordinate of the dummy-wafer-side position sensor, calculates a position coordinate of the arm-side position sensor when the arms hold the wafer, and moves the arms such that the arm-side position sensor moves to the calculated position coordinate.