Patent ID: 6486476
Filing Date: 2002-11-26
Classification: H01L

Abstract:
A semiconductor radiation detector provided with diode structure configured by an electrode respectively provided both on the front and back surfaces of a crystal diced from a semiconductor wafer, an insulating passivation film covering at least the diced surfaces of the crystal, a pair of electrodes composed of a light receiving front electrode and a signal output back electrode for outputting a signal generated in said diode structure when a radiation is incident on said light receiving front electrode in a state in which reverse bias is applied between said both electrodes, wherein:the shape of said crystal is polygonal; at least the diced surfaces of the polygonal crystal diced from said semiconductor wafer have a mirror finished surface; said insulating passivation film formed by coating a resin solution covers from said diced surface of the polygonal crystal to the periphery of said front and back surfaces so that said insulating passivation film surrounds the periphery of both the front and back surfaces of said polygonal crystal; and said light receiving front electrode is expanded from the main part of the electrode formed region at the front surface of said polygonal crystal to said insulating passivation film at the periphery so that the peripheries of insulating passivation film and said light receiving front electrode are mutually overlapped and laminated.