| 摘要 |
A photosensor section is disposed in a vicinity of the center of a shorter side of an LED panel including plural arrays of LED units in each of which plural LEDs are arranged. A gain of the photosensor section is adjusted on the basis of gain correction information set in advance according to the position of each LED unit. Thereby, the calibration of the photosensor section is performed. While the photosensor section, which has been adjusted in this manner, sequentially detects the amounts of light from the LED units, a backlight unit emits backlight toward a liquid crystal display panel.
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