Patent ID: 8017953
Filing Date: 2011-09-13
Classification: H01L

Abstract:
1. An LED chip, comprising an epitaxial semiconductor layer sequence suitable for generating electromagnetic radiation, an electrical connector body, a radiation-transparent current spreading layer electrically conductively connected to said connector body and comprising a TCO, at least one current barrier suitable for selectively preventing, by means of a reduced current density, the generation of radiation in a region laterally covered by said connector body, wherein said current barrier is formed from semiconductor material of said epitaxial semiconductor layer sequence, from material of said current spreading layer and/or by an interface between said semiconductor layer sequence and said current spreading layer, and at least one current barrier which comprises semiconductor material that is conductively doped such that said semiconductor material, together with an adjacent semiconductor material, forms a pn junction that is operated in the blocking direction during the operation of the LED chip.