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. 29, 2003
Filed:
Nov. 27, 2000
Michael A. Bryan, Los Gatos, CA (US);
James K. Kai, San Francisco, CA (US);
Silicon Genesis Corporation, Campbell, CA (US);
Abstract
A cleaving tool provides pressurized gas to the edge of a substrate to cleave the substrate at a selected interface. A substrate, such as a bonded substrate, is loaded into the cleaving tool, and two halves of the tool are brought together to apply a selected pressure to the substrate. A compliant pad of selected elastic resistance provides support to the substrate while allowing the substrate to expand during the cleaving process. Bringing the two halves of the tool together also compresses an edge seal against the perimeter of the substrate. A thin tube connected to a high-pressure gas source extends through the edge seal and provides a burst of gas to separate the substrate into at least two sheets. In a further embodiment, the perimeter of the substrate is struck with an edge prior to applying the gas pressure.