LED MODULE AND CONTROL METHOD THEREOF, AND LED DRIVE CIRCUIT

摘要

An LED module and a control method thereof, and an LED drive circuit (150). The LED module comprises at least one LED drive circuit (150); and an LED lamp array comprising a plurality of LED lamps arranged in ranks, wherein at least one LED drive circuit (150) respectively comprises a communication input port (152), receiving a control signal; a communication control module generating, according to the control signal, scan signals (S1, …, Sn) and constant-current source signals (T1, …, Tm); a communication output port (153), obtaining from the communication control module and outputting a control signal of the next stage; a scan signal output port (154), connected with external scan signal lines; and a constant-current source output port (155), connected with external constant-current source signal lines, the scan signal output port (154) of the at least one LED drive circuit (150) supplying, via the scan signal lines, the scan signals (S1, …, Sn) to the first ends of a plurality of LED lamps, and the constant-current source output port (155) of the at least one LED drive circuit (150) supplying, via the constant-current source signal lines, the constant-current source signals (T1, …, Tm) to the second ends of a plurality of LED lamps, thereby enabling to improve the expansibility and the load capacity.