Patent ID: 8384212
Filing Date: 2013-02-26
Classification: H01L

Abstract:
1. A semiconductor equipment comprising: a sealed container; a stem connected to said sealed container via a stem peripheral portion; and a semiconductor device mounted on a top surface of said stem, inside said sealed container, wherein said semiconductor device is electrically connected to a lead provided to said stem, said stem peripheral portion is bonded along a periphery of said stem, said stem peripheral portion being made of a material that is different from a material of said stem and the same as a material of said sealed container, said stem peripheral portion and said sealed container are connected by welding, said sealed container is filled with a working fluid which is any one of a mixed solution of ethanol and perfluorooctane, a mixed solution of ethanol and perfluorobutyl tetrahydrofuran, and a mixed solution of ethanol and ethoxynonafluorobutane, and the top surface of said stem on which said semiconductor device is mounted has a concave shape.