Patent ID: 8766903

Claim:
A method of driving a light source, the method comprising: determining the duty of each light-emitting block among m×n light-emitting blocks by using a block representative value obtained from each of a plurality of m×n image blocks that are divided from a frame to correspond with the plurality of light-emitting blocks, wherein m is an integer, and n is an integer; comparing block representative values obtained from the image blocks of a previous frame with block representative values obtained from the image blocks of a current frame to determine whether a luminance shifting is occurring at first and second adjacent light-emitting blocks; compensating at least one of the duty of the first adjacent light-emitting block and the duty of the second adjacent light-emitting block if the luminance shifting is occurring at the first and second adjacent light-emitting blocks; and driving the first and second adjacent light-emitting blocks based on a compensated duties.