| 摘要 |
PROBLEM TO BE SOLVED: To provide an image display device that can prevent flicker from occurring on a screen even when disturbances arise in a vertical synchronous signal.SOLUTION: A liquid crystal display device 10 includes an LCD panel 11, an LED 16 for irradiating the LCD panel 11 with light, an LED control device 26 for generating a PWM signal for driving the LED 16, and a CPU 21 that calculates, on the basis of the cycle of a vertical synchronous signal Vsync and the cycle of the PWM signal, the pulse number N of the PWM signal to be generated for one cycle of the vertical synchronous signal Vsync, and controls the LED control device 26 so that the number of waveforms of, for one cycle, the PWM signal to be generated for one cycle of the vertical synchronous signal Vsync is not greater than the calculated pulse number N. |
