Oscillation circuit and image display device

An image display device that receives image signals to display images, the image display device comprising:

• an image display circuit that samples the image signals with sampling signals to display the images;
• a generating circuit that generates the sampling signals supplied to the image display circuit;
• and
• an oscillation circuit that supplies predetermined oscillation signals to the generating circuit,
• wherein the generating circuit has:
• a divider which has a fixed division ratio, divides the predetermined oscillation signals with the division ratio and outputs divided signals;
• a phase comparator which compares a phase difference between a phase of a synchronization signal in the image signals and a phase of the divided signals output from the divider;
• and a generator which generates the sampling signals in a cycle based on comparison results from the phase comparator,
• wherein the oscillation circuit includes a clock signal generating section which generates clock signals in the cycle based on the comparison results from the phase comparator, and a clock signal mask section which masks a part of the clock signals generated by the clock signal generating section to generate the predetermined oscillation signals and supplies the predetermined oscillation signals to the divider, and
• wherein the clock signal mask section masks a part of the clock signals such that the cycle of the sampling signals generated by the generator is the same as a predetermined cycle which is the cycle of a clock for use in generating the image signals.