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:
Dec. 26, 2023
Filed:
Sep. 23, 2020
Sinfonia Technology Co., Ltd., Tokyo, JP;
Hiroaki Nakamura, Tokyo, JP;
Toshihiro Kawai, Tokyo, JP;
Kosuke Sugiura, Tokyo, JP;
Gengoro Ogura, Tokyo, JP;
Yasushi Taniyama, Tokyo, JP;
Sinfonia Technology Co., Ltd., Tokyo, JP;
Abstract
A conveyance system discriminates the front and back of a frame wafer without human intervention. A frame is partially formed asymmetrically with respect to a predetermined center line when viewed in a direction orthogonal to a surface of a wafer. The conveyance system includes a hand configured to hold the frame so that the frame extends in a predetermined virtual plane, a first sensor configured to detect a portion of the frame held on the hand and located in a predetermined first region in the virtual plane, a second sensor configured to detect a portion of the frame held on the hand and located in a second region opposite to the first region across the center line, and a controller configured to determine the front and back of the frame wafer based on a detection result obtained by the first sensor and a detection result obtained by the second sensor.