| 摘要 |
The present invention provides a Light-Emitting Diode (LED) driving circuit and a control system. The LED driving circuit includes: a driving control circuit and a constant current channel group circuit, wherein the driving control circuit includes: a logic control circuit and a clock delay circuit; the logic control circuit is connected with the constant current channel group circuit, and is configured to control the ordered switching-on or switching-off of the constant current channel group circuit by virtue of a data control signal; and the clock delay circuit is connected with the logic control circuit, and is configured to acquire a timing control signal synchronous with the data control signal, and output the timing control signal. By the present invention the clock delay circuit is integrated in the LED driving circuit, so that the effects of synchronizing the data control signal and the timing control signal, reducing the number of wires on a PCB and reducing the influence of the timing control signal on a signal of the PCB are achieved; therefore, the accurate display of LEDs is ensured, the signal transmission quality and anti-interference capability of an LED unit board are improved, and the difficulty in the wiring of the LED unit board is lowered. |
