Patent ID: 8115875

Claim:
An image display device comprising: a display portion that displays an image; a signal-processing portion that generates a display drive signal to drive the display portion; a power supply portion that supplies power to the display portion and the signal-processing portion; a user interface portion that generates an operation signal in response to a user operation; and a control portion that controls operations of the display portion, the signal-processing portion, and the power supply portion based on the operation signal, wherein the image display device operates based on an operation mode, said operation mode including: a waiting mode in which power supply to the display portion and the signal-processing portion stops to de-actuate the display portion and the signal-processing portion; an image-display-waiting mode in which power is supplied to the signal-processing portion to actuate the signal-processing portion but power supply to the display portion stops to de-actuate the display portion; and an image display mode in which power is supplied to the display portion and the signal-processing portion to actuate the display portion and the signal processing portion, and wherein the control portion switches the operation mode, based on the operation signal, from the waiting mode or the image-display-waiting mode to the image display mode or from the image display mode to the image-display-waiting mode, and further comprising a proximity sensor that detects a proximity of a person, and wherein the control portion switches the operation mode from the waiting mode to the image-display-waiting mode based on whether a sensor signal from the proximity sensor indicates the proximity of the person.