An electrical contact element for electrically connecting an electric device and providing current transmission in an electric device wherein the electrical contact element comprises a metallic body, and wherein at least one contact surface, present on the body, is completely or partially coated with a friction-reducing layer. In order to simplify attachment of the exterior trim strip to the carrying structure, the fastening device has latching or clipping-connection elements, which are latched or clipped to an interior trim strip for fastening the exterior trim strip on the interior trim strip. Each of the heat dissipating pieces includes upper and lower bending edges, and at least one opening. In a dual channel mode, the first color of odd signal and second color of even signal are synchronously outputted, and the first color of even signal and second color of odd signal are also synchronously outputted. Viewing angle characteristics can be improved by varying the level of the voltage which is applied between the liquid crystal elements. The orientation of the magnetic axis of the rotor can then be determined by consideration of the scalar parameters SU, SV, SW of each stator phase U, V, W, as the respective rise times of each pulse are determined by the inductive properties of the respective stator phases U, V, W, which in turn are dependent upon the orientation of the rotor.