Fuji Electric Co., Ltd.

Fuji Electric Device Technology Co., Ltd.

Toshiyuki Yokomae

Yoshinari Ikeda

Eiji Mochizuki

Katsumichi Ueyanagi

A semiconductor apparatus equipped with at least one semiconductor element includes a metallic plate bonded to an upper surface of the semiconductor element and a conductor plate, bonded to the metallic plate and serving as an electric current path of the semiconductor apparatus. The conductor plate and the metallic plate are bonded to each other by laser welding at a part other than a part directly above the semiconductor element. As a result, heat damage caused by laser welding can be reduced.

Semiconductor apparatus

An electrical connection inside a semiconductor device is established by lead frames formed of plural conductor plates. The lead frames are disposed three-dimensionally so that the respective weld parts thereof are exposed toward a laser light source used in the laser welding. The laser welding is then performed by irradiating a laser beam. According to the above, welding can be performed readily in a reliable manner. The productivity of the semiconductor device and the manufacturing method of the semiconductor device can be thus enhanced. In addition, because the lead frames have the cooling effect, they have the capability of a heat spreader. It is thus possible to provide a semiconductor device and a manufacturing method of the semiconductor device with high productivity.

Growing community of inventors

Matsumoto, Japan

Toshiyuki Yokomae