Patent ID: 8654051

Claim:
A liquid crystal display device (LCD), comprising: a liquid crystal panel; a temperature sensing means configured to measure a real-time temperature of the liquid crystal panel; a backlight unit configured to supply a light to the liquid crystal panel; a control unit configured to convert an image signal into an RGB signal according to the real-time temperature and convert a first dimming signal to a second dimming signal according to the real-time temperature; and an inverter unit configured to adjust the backlight unit using the second dimming signal, wherein when the real-time temperature is lower than a predetermined critical temperature, the control unit decreases a grey level of the image signal to generate the RGB signal and increases a duty ratio of the first dimming signal to generate the second dimming signal, and the inverter unit increases a luminance of the backlight unit according to the second dimming signal having an increased duty ratio as compared with the first dimming signal, and wherein when the real-time temperature is equal to or higher than a predetermined critical temperature, the control unit increases the grey level of the image signal to generate the RGB signal and decreases the duty ratio of the first dimming signal to generate the second dimming signal, and the inverter unit decreases the luminance of the backlight unit according to the second dimming signal having a decreased duty ratio as compared with the first dimming signal.