Patent ID: 8635887
Filing Date: 2014-01-28
Classification: B23K,C03B,C03C

Abstract:
1. A method of separating a glass article from a glass substrate sheet, the method comprising: providing an un-strengthened glass substrate sheet; focusing a laser beam on at least one surface of the un-strengthened glass substrate sheet, wherein the laser beam comprises an asymmetrical intensity distribution at the at least one surface of the glass substrate sheet; translating the laser beam on the at least one surface of the un-strengthened glass substrate sheet along a desired groove line to form at least one groove on the at least one surface of the un-strengthened glass substrate sheet, wherein the at least one groove extends continuously around a perimeter of the glass article, the at least one groove partially extends through a thickness of the glass substrate sheet along the desired groove line, and the at least one groove comprises beveled or chamfered walls; strengthening the un-strengthened glass substrate sheet by an ion-exchange strengthening process; and separating the glass article from the strengthened glass substrate sheet along the at least one groove.