Patent ID: 7195942

Claim:
A method for fabricating a plurality of radiation-emitting semiconductor devices, each said device including a multilayer structure that contains a radiation-emitting active layer and a radiotransparent window layer that is disposed on a side of said multilayer structure facing away from a main direction of radiation of the semiconductor device, said window layer including a first side wall portion which extends obliquely, concavely or in a stepwise manner with respect to a central axis of the semiconductor device lying perpendicular to the multilayer sequence, and which in its subsequent extension toward the back side, viewed from said multilayer structure, changes over into a second side wall portion that forms a mounting pedestal for said semiconductor device, said method comprising the following steps: fabricating a plurality of mutually adjacent multilayer structures on a large area substrate wafer including a radiotransparent window layer, sawing into said substrate wafer from the back of the substrate, with a saw blade having a shaped edge that has the negative shape of the intended oblique, concave or stepwise shape of said first side wall portions, to a predetermined depth at which the blade-shaped portion of said saw blade saws into said substrate, said saw blade also having a blade side surface having a negative shape of said second sidewall portion, dividing said wafer along said sawcuts into separated devices, and processing the separated devices further.