Patent ID: 8760073

Claim:
A high-efficiency Alternating Current (AC)-driven Light-Emitting Diode (LED) module, comprising: a full-wave rectification unit configured to rectify commercial supply voltage; an LED unit configured such that LEDS connected in series are arranged separately or in groups; at least one instantaneous current control unit configured to sequentially control sections of the LEDs connected in series; and at least one input power compensation unit configured to actively control variations in input current and power attributable to variations in input voltage; wherein the full-wave rectification unit, the LED unit, the instantaneous current control unit, and the input power compensation unit are formed of a one-board module (ASIC) or an Integrated Circuit (IC); wherein the instantaneous current control unit allows a ground of a second highest instantaneous current control unit to be connected to a shunt resistor of a second lowest instantaneous current control unit, thereby providing sequential sectional control.