Patent ID: 7602362

Claim:
A liquid crystal display device, comprising: a liquid crystal (LC) panel including a plurality of scan lines for transferring scan signals, a plurality of data lines crossing the scan lines, and a plurality of pixel circuits arranged at crossing points of the scan lines and the data lines; a light source controller for controlling red, green and blue light emitting diodes (LEDs) so as to sequentially emit red, green and blue lights to the LC panel; a scan driver for applying the scan signals to the plurality of scan lines; a data driver for outputting gradation voltages of red, green and blue to the plurality of data lines; a gradation voltage generating portion for outputting gradation voltages corresponding to red, green and blue data to the data driver; and a timing controller for outputting the red, green and blue data to the gradation voltage generating portion, and for controlling operation of the data driver and the light source controller; wherein the timing controller includes a frame memory for writing new red, green and blue data according to address designation and for reading written red, green and blue data, and a detector for outputting a cut off signal for cutting off operation of the light source controller when the new red, green and blue data are written before the written red, green and blue data are read.