Laser scribe and break process

Abstract

A method for effectuating scribe and break of coated glass microsheets for use with satellite solar cell covers. The method improves the consistency and edge quality of scribed solar cell covers, and also adds scribe and break capabilities not available with the conventional processes, resulting in various, even complex shapes and improved yields. The laser scribe method ensures that most of the laser energy is absorbed in a thin layer that is removed during the pulse, which further ensures that virtually no heat is left behind. This method also promotes a superior and consistent edge quality in satellite solar cell covers. The smoother edges eliminate points of weakness from where cracks may originate, as frequently experienced with the conventional diamond scribe techniques. A laser source such as a KrF excimer laser is utilized for scribing the microsheets. The absorption of the laser correlates with the particular properties of the coating contained on the surface of the microsheets and the particular properties of the microsheet itself. The microsheets are broken to their final size by applying a tensile force perpendicular to the scribe line.

Dependencies are inferred from the claim text.