Patent ID: 9508803
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a semiconductor layer on which a semiconductor element is disposed; a wiring layer formed on or in the semiconductor layer; an interlayer film formed on the wiring layer, the interlayer film cooperating with the semiconductor layer to form an uneven shape; an unevenness buffer layer with a conductive property formed on an upper surface of the interlayer film and a surface of the semiconductor layer such that the unevenness buffer layer is in continuous contact with the upper surface of the interlayer film and the surface of the semiconductor layer, the unevenness buffer layer having a smoother surface than the uneven shape and being electrically connected to a part of the semiconductor element; and a surface electrode including a metal material over the unevenness buffer layer, the surface electrode having a smoother surface than the uneven shape.