LIQUID CRYSTAL DISPLAY APPARATUS AND DRIVING METHOD THEREOF

摘要

A liquid crystal display apparatus includes a gamma mapping unit configured to receive red, green, and blue image information from an external device. During the first field, the gamma mapping unit generates first to third data signals for controlling the first to third pixels based on the red, green, and blue image information in synchronization with the backlight unit. During the second field, the gamma mapping unit generates fourth and fifth data signals for controlling the first and second pixels based on at least one of the first to third data signals or based on the red, green, and blue image information. As the quantity of the second color light leaked is adjusted through the first and second color filters in the second field, a color reproduction range and brightness of the liquid crystal display panel are improved. Thus, the display quality of the liquid crystal display apparatus is improved.

主权项

1. A liquid crystal display apparatus comprising:
a backlight unit configured to sequentially provide first color light during a first subframe time of a frame and second color light during a second subframe time of the frame, wherein the first color light includes at least two primary colors; a liquid crystal display panel including a pixel, and first and second color filters, wherein the pixel is formed of first, second and third subpixels, wherein one of the at least two primary colors in the first color light is transmitted to the first subpixel having the first color filter, wherein another of the at least two primary colors is transmitted to the second subpixel having the second color filter, and wherein the second color light is transmitted to the third subpixel without using any color filter; and a gamma mapping unit configured to:
receive red, green and blue image information from an external device; andgenerate, based on the red, green and blue image information, first to third data signals for driving the first to third subpixels during the first subpixel time, and generate, based on at least blue image information, fourth and fifth data signals for driving the first to second subpixels during the second subpixel time.