Light-emitting diode module

A light-emitting diode module, comprising:

• a circuit board having a surface, the surface having a first long edge and a second long edge, and the surface being defined with a first area, a second area and a trace routing channel between the first and second areas, the first long edge having a wiring outlet at a position corresponding to the trace routing channel;
• a plurality of light-emitting diode (LED) strings divided into a first LED-string group and a second LED-string group, the first and second LED string groups being disposed in the first and second areas, respectively;
• and
• a plurality of signal wires disposed on the surface and routed to have their one ends joined to the wiring outlet, the signal wires being divided into a first wire group and a second wire group, the first and second wire groups being adjacent to each other, a first signal wire in the first wire group being routed to have its another end electrically connected to one end of each light-emitting diode string in the first LED-string group, the remaining signal wires in the first wire group being routed to have their another ends electrically connected to another ends of the light-emitting diode strings in the first LED-string group respectively, a second signal wire in the second wire group being routed to have its another end electrically connected to one end of each light-emitting diode string in the second LED-string group, the remaining signal wires in the second wire group being routed to have their another ends electrically connected to another ends of the light-emitting diode strings in the second LED-string group respectively,
• wherein each of either the first signal wire or the remaining signal wires in the first wire group is further routed to have a segment thereof passed through the trace routing channel.