Patent ID: 8149206

Claim:
A liquid crystal display comprising: a liquid crystal display panel having at least first and second display portions; a first LED light source unit configured to selectively irradiate light onto the first display portion; a second LED light source unit configured to selectively irradiate light onto the second display portion; a light source drive circuit configured to individually drive the first and second LED light source units in response to an address signal; and a light source controller configured to generate the address signal and transmit the address signal to the light source drive circuit to turn on the first LED light source unit and to turn off the second LED light source unit during a first time period, to turn on the first and second LED light source units during a second time period after the first time period in a self screen mode in which a live image is not displayed wherein the light source controller is further configured to generate the dimming signal to stepwise increase to a first critical value during a first half of the first time period, to stepwise decrease to a second critical value smaller than the first critical value during a second half of the first time period, to maintain the second critical value during a first half of the second time period, and to stepwise decrease to a minimum value during a second half of the second time period in the self screen mode.