Patent ID: 6521068
Filing Date: 2003-02-18
Classification: B23K,H05K,Y10T

Abstract:
A method of detaching a solid partial layer arranged within a segment of a material layer disposed on a carrier from said material layer, said material layer extending in a layer plane and having a specific layer thickness, by means of a laser pulse passing through the carrier, wherein:the laser pulse produces superheated matter within a partial layer volume of said segment, said partial layer volume abuts against the carrier, lies within an extent of a beam cross-section of the laser pulse and extends transversely to the layer plane via a part of the layer thickness, said superheated matter produced by the laser pulse has a density at density values similar to density values of the solid state and is in a state of thermodynamic non-equilibrium, and said superheated matter expands and accelerates a cohesive, solid partial layer remaining in the segment after formation of said superheated matter in said partial layer volume on a side of the partial layer volume opposite to the carrier, in order to detach the partial layer from the material layer.