Patent ID: 8674927
Filing Date: 2014-03-18
Classification: G09G

Abstract:
1. A liquid crystal display comprising: a timing controller which receives a first image signal corresponding to a first frame frequency and outputs a second image signal corresponding to a second frame frequency; a liquid crystal panel which receives the second image signal and displays an image at the second frame frequency; and a backlight unit including a plurality of light-emitting blocks corresponding to a plurality of pixels which provide light to the liquid crystal panel, wherein the timing controller includes a PWM signal output unit generating a PWM signal configured to be supplied to a backlight unit driver, wherein the light-emitting blocks are divided into a plurality of light-emitting groups which supply light to corresponding rows of the pixels, wherein an operation mode of the backlight unit comprises a first operation mode including first frames which include an off section in which at least one of the light-emitting groups is turned off and a second operation mode including second frames which include an on section in which a luminance of every light-emitting blocks are configured to be controlled according to images displayed on each of a display blocks, wherein the first operation mode and the second operation mode are selected by a disable signal connected to the backlight unit driver, and wherein the second operation mode includes a period in which all of the light-emitting blocks are turned on simultaneously.