Patent ID: 9346708
Filing Date: 2016-05-24
CPC Classification: C03C,Y10T

Claim Text:
1. A method for forming a glass frit on a glass substrate, the method comprising: providing a glass substrate comprising a compressive stress layer extending from a surface of the glass substrate into a thickness of the glass substrate, the compressive stress layer having a depth of layer DOL and an initial compressive stress CS depositing a lead free glass frit composition on at least a portion of the surface of the glass substrate to form a glass assembly; heating the entire glass assembly in a furnace to sinter the lead free glass frit composition and bond the lead free glass frit composition to the glass substrate, wherein, after heating, the lead free glass frit composition is fully vitrified and the glass substrate has a fired compressive stress CS wherein the entire glass assembly is heated by: heating the glass assembly to a first temperature T holding the glass assembly at the first temperature T heating the glass assembly to a second temperature T holding the glass assembly at the second temperature T