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:
May. 20, 2025
Filed:
Jan. 28, 2022
Corning Incorporated, Corning, NY (US);
Garrett Andrew Piech, Corning, NY (US);
Sergio Tsuda, Horseheads, NY (US);
CORNING INCORPORATED, Corning, NY (US);
Abstract
A method of separating a transparent workpiece comprises depositing a sacrificial layer onto a textured surface of the transparent workpiece, the sacrificial layer comprising a refractive index that is less than or equal to a refractive index of the transparent workpiece and greater than or equal to a refractive index of air. A defect-forming laser beam is generated via an optical assembly and used to form a plurality of defects in the transparent workpiece through sacrificial layer. The defect forming laser beam either comprises a pulsed laser beam forming a laser beam focal line in the transparent workpiece or an optical power of greater than or equal a critical power level to induce Kerr effect self-focusing in the transparent workpiece. The transparent workpiece is separated along the contour.