Production method of thermoelectric converter, production method of electronic device equipped with thermoelectric converter, and thermoelectric converter

A thermoelectric converter comprising:

• a front side protective member equipped with a plurality of front side conductive layers;
• a reverse side protective member equipped with a plurality of reverse side conductive layers;
• an insulating base which has a plurality of first and second via holes which extend through a thickness thereof, said insulating base containing thermoplastic and having a front surface and a reverse surface;
• first layer-to-layer connecting members which are disposed in said first via holes and made of alloy in which a plurality of atoms keep a given crystal structure constant;
• and
• second layer-to-layer connecting members which are disposed in said second via holes and made of metal different in kind from said alloy, characterized in that wherein
• when the first layer-to-layer connecting member disposed in each of the first via holes and the second layer-to-layer connecting member disposed in an adjacent one of the second via holes is defined as a pair, said front side protective member is placed on the front surface of said insulating base with the first layer-to-layer connecting member and the second layer-to-layer connecting member of each pair being in direct contact with a same and corresponding one of the front side conductive layers, and said reverse side protective member is placed on the reverse surface of said insulating base with the first layer-to-layer connecting member in one of two adjacent pairs and the second layer-to-layer connecting member in the other one of the two adjacent pairs being in direct contact with a same and corresponding one of the reverse side conductive layers, and
• the insulating base surrounds peripheries of each first layer-to-layer connecting member and each second layer-to-layer connecting member.