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:
Jun. 19, 2001
Filed:
May. 18, 1998
Utpal Kumar Chakrabarti, Allentown, PA (US);
David Reese Peale, Chatham, NJ (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
An improved anvil tool for use in laser bar or wafer cleaving comprises a relatively small cross section such that the anvil does not overhang the device edges in any direction. In one embodiment, the surface of the tool contacting the laser wafer or bar is compliant and contains a laterally disposed slit that aligns with the scribe mark on the top surface of the material to be cleaved. The anvil may be formed as a columnar tool or as a film deposited on a substrate. The compliant surface may be removable and in a preferred embodiment may comprise a continuous feed membrane tape so that a “clean” surface is used for each subsequent cleave operation.