Patent ID: 7583248

Claim:
A method for modulating and driving backlight source (BLS) groups of a flat panel display, comprising series of execution steps in the sequence set forth: (a1) turning on a display screen; (a2) identifying the total number of the BLS groups provided on the backlight module; (a3) turning on the BLS group located at the center-most region of the backlight module if the total number of the BLS groups is an odd number; (a4) turning on one of the two BLS groups located at the center-most region of the screen if the total number of the BLS groups is an even number; (a5) turning on a BLS group adjacent to one side of the turned-on center-most BLS group while turning off the turned-on center-most BLS group, then turning on a BLS group adjacent to another side of the turned-off center-most BLS group while turning off the previous turned-on BLS group, and similarly, by iteratively progressing the turning-on and the turning-off from the center region to the two outer edge of the backlight module so as to complete a full cycle; (a6) determining whether the display screen is off; if so, the process proceeds to step (a7); otherwise, the process goes to step (a1); and (a7) ending the method.