Current-balance circuit and backlight module having the same

A backlight module with current balance circuit, comprising:

• a plurality of light units;
• a boost unit, connected to said plurality of light units to convert input voltage and supply voltage to said plurality of light units;
• a current balance unit, connected to said plurality of light units, wherein said current balance unit adjusts current for said plurality of light units to remain stable, independent from output voltage of said boost unit;
• a dimming control unit, connected to said current balance unit, controls operation of said current balance unit;
• a reference current source unit, connected to said dimming control unit to supply stable current;
• a control unit, connected to said dimming control unit, transmits PWM signal to control operation for said plurality of light units;
• and
• a detection unit, connected to said plurality of light units and said current balance unit, to detect minimum operating voltage for said plurality of light units.