Patent ID: 7659874

Claim:
A driving device for a liquid crystal panel that includes: plural liquid crystal cells arranged in a matrix shape; pixel electrodes provided for the respective liquid crystal cells; plural data lines for inputting an image signal to the respective pixel electrodes; a data line driver that generates a sampling signal for sampling the image signal from inputted plural timing signals; plural sampling circuits provided for the respective data lines that sample the image signal according to the sampling signal and output the image signal to the data lines; and a dummy element formed on a substrate identical with a substrate on which the sampling circuits are formed, the driving device for a liquid crystal panel comprising: a signal generating circuit that generates a plurality of timing signals including at least a start signal and at least one other signal using the start signal as a reference of a phase; a reference signal generating circuit that generates a reference signal, the generation of the reference signal being triggered by a horizontal synchronized signal of an image signal, and the reference signal being generated after the elapse of a predetermined time from the triggering horizontal synchronized signal; a phase comparator that compares phases of a monitor signal and the reference signal and outputs phase comparison information, wherein the monitor signal is the start signal changed via the dummy element; and an adder that outputs an integrated count value for adjusting timing for generating the start signal on the basis of an initial count value set in advance and the phase comparison information from the phase comparator, wherein the signal generating circuit generates plural timing signals including the start signal with the horizontal synchronizing signal as a trigger and with timing based on the integrated count value as a start point and supplies the timing signals to the liquid crystal panel.