Patent ID: 7655488
Filing Date: 2010-02-02
Classification: H01L

Abstract:
1. Method for fabricating a plurality of semiconductor chips which emit electromagnetic radiation, comprising the following method steps: (a) provision of a growth substrate wafer; (b) epitaxial growth of a semiconductor layer sequence on the growth substrate wafer, which includes a p-conducting semiconductor layer, an n-conducting semiconductor layer and an electromagnetic radiation generating region which is arranged between these two semiconductor layers, the n-conducting semiconductor layer being first of all grown on the growth substrate wafer, and a plurality of planar sub-surfaces, which are positioned obliquely with respect to a main plane of the radiation-generating region and each form an angle of between 10° and 50° with this plane, being formed on the p-conducting semiconductor layer surface; (c) application of a mirror layer to the p-conducting semiconductor layer; (d) production or application of a base on or to the mirror layer; (e) removal of at least part of the growth substrate wafer from the semiconductor layer stack; (f) application of a contact layer to the n-conducting semiconductor layer; and (g) separation of the wafer produced in steps (a) to (f) into individual semiconductor chips.