Patent ID: 8188966
Filing Date: 2012-05-29
Classification: G09G

Abstract:
1. An image display device capable of adjusting brightness, the image display device comprising: a brightness determining unit configured to: a backlight control unit that is connected to the brightness determining unit, the backlight control unit being configured to: a contrast control unit that is connected to the brightness determining unit, the contrast control unit being configured to receive output an image output signal, the image output signal being converted from an image signal including the applied image data of which the contrast is adjusted by the contrast control unit to correspond to the contrast selection signal, the contrast control unit comprising: first to fifth calculation means that shift the applied image data by one bit, two bits, three bits, four bits, and five bits, respectively; and a contrast calculating means that is connected to the first to fifth calculation means and the brightness determining unit, the contrast calculating means being configured to selectively add the image data output from the first to fifth calculation means depending on preset backlight brightness combinations such that a contrast of the image data corresponds to the contrast selection signal output from the brightness determining unit, thereby generating the image signal of which the contrast is adjusted; and an image display unit that is connected to the backlight control unit and the contrast control unit, the image display unit being configured to: