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:
Oct. 13, 2020
Filed:
Aug. 08, 2019
Disco Corporation, Tokyo, JP;
Hayato Kiuchi, Tokyo, JP;
Katsuhiko Suzuki, Tokyo, JP;
DISCO CORPORATION, Tokyo, JP;
Abstract
There is provided a carrier plate removing method of removing a carrier plate from a workpiece disposed on a front surface of the carrier plate with a provisional bond layer interposed between the carrier plate and the workpiece. The carrier plate removing method includes a first holding step of holding the carrier plate and exposing the workpiece, a stepped portion forming step of forming a stepped portion in which an back surface side projects outward of a front surface side at an outer peripheral edge of the carrier plate, a second holding step of holding the workpiece and exposing the carrier plate, and a carrier plate removing step of removing the carrier plate from the workpiece by applying a force to the stepped portion and moving the carrier plate in a direction of being separated from the workpiece by a removing unit.