Patent ID: 8581941

Claim:
A backlight apparatus comprising: a light emitting section having a plurality of light emitting areas: a motion amount detecting section that detects an amount of motion of an image in each of a plurality of moving areas corresponding to at least one of the light emitting areas; a driving condition designating section that designates driving conditions including a duty and a peak value of a driving pulse to cause the plurality of light emitting areas to emit light based on the detected amount of motion; a drive section that drives the plurality of light emitting areas according to the designated driving conditions; a feature amount detecting section that detects a feature amount of an image signal for each of a plurality of brightness areas corresponding to at least one of the light emitting areas; and a brightness command value determining section that determines a brightness command value for each of the plurality of brightness area based on the detected feature amount, wherein; the driving condition designating section determines the peak value of the driving pulse for each of the plurality of light emitting areas based on the detected amount of motion, after the duty of the driving pulse is temporarily determined based on the determined peak value, the temporarily determined duty is corrected based on the determined brightness command value, to adjust the driving conditions such that the driving conditions change gradually with time; and the drive section drives each of the plurality of light emitting areas according to the driving conditions including the determined peak value and the corrected duty.