Patent ID: 7893345

Claim:
A thermoelectric module device comprising: a first substrate having inner and outer surfaces; a second substrate having inner and outer surfaces, the inner surface of the second substrate being divided into a first region and a second region, the second substrate being arranged in parallel to the first substrate such that the first region of the inner surface of the second substrate is in opposition to the inner surface of the first substrate but the second region of the inner surface of the second substrate is out of opposition to the inner surface of the first substrate to form an extension; a Peltier-junction module sandwiched between the inner surface of the first substrate and the first region of the inner surface of the second substrate, the Peltier-junction module being made up of a series of Peltier junctions including a pair of outermost Peltier junctions; a pair of power supply electrodes provided on the second region of the inner surface of the second substrate and connected to the pair of the outermost Peltier junctions, respectively; and a metallization layer provided on the outer surface of the second substrate for being soldered to a package, the metallization layer being electrically isolated from the pair of power supply electrodes, the metallization layer being divided into spaced first and second portions, the first portion being a single continuous layer which is placed below the first region to correspond to the Peltier-junction module, the second portion being placed below the second region to correspond to the pair of power supply electrodes, a surface area of the first portion being substantially larger than a surface area of the second portion.