Provided is a backlight device, wherein when the drive duty and drive current are controlled in each of predetermined light-emitting areas of a light-emitting unit, the color unevenness and moving image resolution difference between image display areas corresponding thereto are improved. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of image display areas. A drive condition specifying unit specifies, with respect to each of the plurality of light-emitting areas, a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. An LED driver (123) drives each of the plurality of light-emitting areas on the specified drive condition. When a difference between the detected motion amounts occurs between adjacent image display areas, the drive condition specifying unit adjusts the drive conditions such that a difference between the drive conditions occurring between adjacent light-emitting areas is reduced according to the difference between the detected motion amounts.