Patent ID: 7564672

Claim:
A mobile, transportable electrostatic chuck comprising a first surface ( 8 a ) for electrostatically clamping a thin process-wafer ( 12 ) thereon by applying a clamping voltage, without permanent connection to an external power supply unit for transportation or other process steps, where the size and thickness of the clamped process-wafer and the mobile chuck is similar of size, thickness and shape as a standard wafer comprising: a semiconductor base-material ( 11 ) with electrodes on top, which create a non-uniform electric field, wherein each said electrode comprises a plurality of clusters built up modularly from a plurality of single, bipolar electrode-unit-cells ( 10 ); each of said electrode-unit-cell ( 10 ) comprising one inside peak-electrode ( 1 ), a lateral insulator layer ( 2 ), a surrounding electrode ( 3 ) and a top dielectric layer ( 8 ).