LCD Backlight Partition Timing to Reduce Tailing and After-Images

The patent applies periodic action by dividing the backlight source into multiple partitions that are sequentially activated in different scan cycles. The backlight partitions are turned on and off in a periodic manner, with each partition being active during specific scan cycles (e.g., first backlight partition active in odd scan cycles, second backlight partition active in even scan cycles). This periodic activation pattern reduces the persistence of light in the liquid crystal cells, thereby minimizing tailing and after-image effects while maintaining high display speed capability.

The patent segments the backlight source into multiple independent backlight partitions (e.g., first backlight partition, second backlight partition, third backlight partition, fourth backlight partition), each controlled by its own light-emitting diode array. This segmentation allows different portions of the backlight to be activated at different times during the display of a single frame, enabling the system to reduce tailing effects through temporal separation while maintaining a relatively simple overall structure that is easy to manufacture.