| 摘要 |
A liquid crystal display device includes a power consumption reduction portion that analyzes a histogram of first image data of an image and generates second image data and a first luminance control signal, wherein, when the image includes an irrelevance region which is substantially irrelevant to degradation of display quality, the power consumption reduction portion analyzes a histogram of first image data of other region of the image except for an excluded region, and wherein the excluded region includes at least the irrelevance region; a timing controller that is supplied with the second image data and the first luminance control signal and generates gate control signals, data control signals and a second luminance control signal; a gate driving portion that generates gate voltages using the gate control signals; a data driving portion that generates data voltages using the second image data and the data control signals; a liquid crystal panel that displays the image using the gate voltages and the data voltages; a backlight control portion that generates a backlight control signal using the second luminance control signal; and a backlight unit that supplies light according to the backlight control signal. |
