Patent ID: 7027283

Claim:
A mobile holder for a wafer, comprising: a base element; a first fixing means for electrostatically fixing the wafer to the base element, said first fixing means comprising: a functional layer including a charge storage layer; an insulating cover arranged on top of said functional layer, said wafer being in contact with said insulating cover, when said wafer is fixed to said mobile holder; and an electrode structure comprising a first electrode and a second electrode, each electrode having a connecting area for connecting said electrode structure to electric leads, wherein the first and the second electrodes are arranged on top of the base element and below the functional layer, wherein the functional layer is formed such that the first fixing means is in an electrostatically active state without any supply of voltage from outside after applying a voltage to said connecting areas, said electrostatically active state being such that a wafer is held at said mobile holder due to charges stored in said charge storage layer without any supply of voltage from outside; and a second fixing means for releasably fixing the mobile holder to a wafer support.