| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a flicker on a display device which is generated when feedback circuits are switched in a power supply device.SOLUTION: An electronic device according to the present invention includes: a power supply device, having a booster circuit for boosting an input voltage and outputting the boosted input voltage, which, when driving only a backlight LED part of a liquid crystal display device, generates a drive voltage on the basis of a voltage from a first feedback circuit or, when driving the backlight LED part, a piezo drive part, and a piezoelectric element, generates a drive voltage on the basis of a voltage from a second feedback circuit differing from the first feedback circuit, and outputs the generated drive voltage to a load circuit; and a system control unit for causing an image corresponding to the state of the load circuit to be displayed by the liquid crystal display device. The system control unit is designed so that display data outputted to the liquid crystal display device is switched synchronously with a sync signal used in switching frames when the feedback circuits are switched in the power supply device, whereby it is made possible to reduce a flicker in the displayed image.</p> |
