Patent ID: 7495288
Filing Date: 2009-02-24
Classification: H01L

Abstract:
1. A semiconductor apparatus, comprising: an input protection circuit coupled to a wiring provided between an external terminal and an internal circuit, the input protection circuit including a protection element for protecting the internal circuit from an excessive electrostatic surge input applied to the external terminal; a first metal wiring layer coupled to the input protection circuit, the first metal wiring layer included in a current path for the electrostatic surge input; a radiator coupled to the first metal wiring layer, the radiator being comprised of a sufficient thermal conductivity material, the radiator being provided with a second metal wiring layer and plural sets of via-metals, wherein a separate wiring layer; wherein the plural sets of via-metals are respectively connected to the second metal wiring layer, and the number of the via-metals of one of the plural sets of via-metals formed in one of the interlayer insulating layers is reduced from the number of the via-metals of another one of the plural sets of via-metals formed in another one of the interlayer insulating layers, and wherein the separate wiring layer is provided in one of the interlayer insulating layers so as to avoid contacting the second metal wiring layer and the via-metals.