Display module mounting apparatus and methods provide mounting features enabling ease of installation and service. The silicon-based insulating layer is arranged on the side of the carrier element opposite to the semiconductor device. In one embodiment, replacement resources are managed by a resource mirror. By providing the rear wall and the front wall of the guiding opening with defined curvatures, well-defined forces are exerted at any speed in both orientations of the rotating movement, so that torque is continuously transmitted effectively in both directions. In a state in which the reservoir 4 and a suction section 70 of the pump 7 are communicated via the second liquid chamber 52, a liquid pressure of the first liquid chamber 51 can create a wheel cylinder liquid pressure.