NOVELTY - The circuit comprises a polyimide layer (120,220) that is formed over a substrate (130,230). Multiple p-type and n-type thermoelectric elements (110A,110B,210A,210B) are located within the polyimide layer. The p-type and n-type thermoelectric elements are connected in series through interconnects (150,250) while alternating between the p-type and n-type thermoelectric elements. A barrier metal (160) is included between each interconnect and the p-type and n-type thermoelectric elements. A thermal contact layer is located above the p-type and n-type thermoelectric elements.    USE - Integrated circuit of thermoelectric energy battery (claimed) for use in thermoelectric devices.    ADVANTAGE - The flow of electrons are generated in each of the thermoelectric elements to provide electric energy in response to heat applied to one side of the thermoelectric elements. The p-type and n-type thermoelectric elements located above the substrate and connected in series are capped while alternating between the p-type and the n-type thermoelectric elements. The vacuum or a low pressure is maintained between the thermoelectric elements. The parasitic heat loss into the area surrounding the integrated circuit is reduced and a large thermal gradient is maintained along the thermoelectric elements. The high thermal resistance of the thermoelectric elementsis ensured by maintaining a good temperature difference between a hot side and a cold side of the thermoelectric elements. The thermal resistance of the thermoelectric elements is increased by the controlling the doping level of the thermoelectric elements or by introducing scattering elements to increase the photon scattering in the thermoelectric elementswithout affecting too much on the electric conduction. The concentration of the doping level or the scattering elements is increased or decreased at one end of the thermoelectric elementsas compared to an opposite end of the thermoelectric elements. The conduction of heat away from the thermoelectric elementsis suppressed.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a thermoelectric energy battery.    DESCRIPTION OF DRAWING(S) - The drawings show the schematic views and a perspective view of the thermoelectric energy battery. (Drawing includes non-English language text)    P-type and n-type thermoelectric elements (110A,110B,210A,210B)    Polyimide layer (120,220)    Substrate (130,230)    Interconnects (150,250)    Barrier metal (160)