Patent ID: 8110777
Filing Date: 2012-02-07
Classification: B65G,C03B,G02F,Y10T

Abstract:
1. A method of dividing a plane-parallel plate made of a brittle material into a plurality of individual plates having a specified edge length comprising: introducing thermally induced stresses by means of a laser beam in said plane-parallel plate thereby producing scored lines in a lattice-like pattern in said plane-parallel plate, said lattice-like pattern being formed by first producing scored lines along a first working direction starting from an initial defect to be created in the material of said plane-parallel plate thereby dividing said plane-parallel plate into a plurality of plate strips ( wherein said plane-parallel plate or said plate strips and individual plates are held on a clamping table by means of a vacuum, and wherein said plane-parallel plate is bonded to a framed stretch film, said framed stretch film being stretched at least in a direction perpendicular to the first working direction while said vacuum holding said plane-parallel plate is removed in order to create space intervals between said plate strips.