Patent ID: 8222724

Claim:
A semiconductor element module in which at least one semiconductor element is sandwiched between a first insulating substrate having a high thermal conductivity and a second insulating substrate having a high thermal conductivity, and an outer peripheral portion between the first insulating substrate and the second insulating substrate is sealed, wherein the semiconductor element includes a plurality of electrode surfaces formed on part of a surface of the semiconductor element on one side, the first insulating substrate includes a plurality of first wiring surfaces formed on a surface of the first insulating substrate on one side in such a way as to correspond to each electrode surfaces of the semiconductor element, and the semiconductor element is mounted to the first insulating substrate and the second insulating substrate by bonding the surface of the semiconductor element on the one side to the first insulating substrate by use of room-temperature bonding in such a way that the electrode surfaces of the semiconductor element are caused to face the first wiring surfaces, and bonding a surface of the semiconductor element on the other side to the second insulating substrate by room-temperature bonding.