Various embodiments provide a method for an extended field of view treatment. Specific control elements are introduced into the three power conductors connected to a three-phase motor, the elements chosen so as to cause the motor to turn at a speed below a certain critical speed, above which the elements have no control over the motor power used or the motor speed. The end-users may work in an application context that is not integrated in the messaging system. A color CF layer is formed between a glass substrate and a passivation layer of the TFT array substrate. It is proposed that the air mass flow in a part cross section of the overall cross section can be regulated by the device.