A phase locked loop system for tuning the reception frequency of a receiver for digitally modulated received signals and analog-modulated received signals has at least one voltage controlled oscillator for producing an oscillator signal for a reception frequency tuning. The rate of growth of the seed crystals in the plane of the substrate is controlled to be comparable to the rate of growth out of the plane. Input of an image signal to a driver circuit is controlled in accordance with an image operation signal output from the input device.