| 摘要 |
An LED display control method and control card (11) and LED display screen system (10), being suitable for use in a plurality of LEDs electrically connected to N scan lines; the display control method comprises the steps of: in a first scanning process round, receiving line selection signals and decoding the received line selection signals to sequentially scan the N scan lines in a first scanning sequence so as to drive and control a plurality of LEDs; and in a second scanning process round, receiving line selection signals and decoding the received line selection signals to sequentially scan the N scan lines in a second scanning sequence so as to drive and control a plurality of LEDs, the first scanning process round being performed alternately with the second scanning process round, and the order of the first scanning sequence being the reverse of that of the second scanning sequence. The LED display control method employs alternating forward and reverse scanning to eliminate afterglow of an isolated point, thus improving user viewing experience. |
