Patent ID: 8564212

Claim:
A method for managing a power source of a display, comprising a plurality of light emitting diodes (LEDs) having a voltage value and a current value, the method comprising steps of: calculating an optimized voltage value and an optimized current value for the display; obtaining a first optimal working point for the display according to the optimized voltage value and the optimized current value; using a square root of a total number of the plurality of LEDs to determine a first reference value being one of a floor value and a ceiling value of the square root; arranging the plurality of LEDs as a first plurality of parallel connected LED cascades according to the first optimal working point, and a total number of the first plurality of parallel connected LED cascades of the plurality of LEDs equaling the first reference value, wherein a total number of serially connected LEDs in each of the first plurality of parallel connected LED cascades equals the first reference value; using a square root of the first reference value to determine a second reference value being one of a floor value and a ceiling value of the square root thereof; obtaining a second optimal working point according to the optimized voltage value and the optimized current value; arranging a second plurality of parallel connected LED cascades according to the second optimal working point; and connecting the first plurality of LED cascades to the second plurality of parallel connected LED cascades, wherein a total number of serially connected LEDs in each of the second plurality of parallel connected LED cascades equals the second reference value.