Patent ID: 8159419

Claim:
A display apparatus comprising a plurality of light emitting units, comprising: a plurality of power drivers, comprising a first power driver and a second power driver, for outputting driving power to the plurality of light emitting units, wherein a total of the power drivers provided therein is less than a total of light emitting units; a power switch controllable to selectively supply the driving power from at least one of the first and second power drivers to at least one of the plurality of light emitting units; and a controller for controlling the power switch to sequentially supply the driving power from the first and second power drivers to the at least one of the plurality of light emitting units; wherein the controller supplies a first reference voltage and a second reference voltage to the first and second power drivers, respectively, the first power driver outputs driving power to be supplied to a first light emitting unit, the second power driver outputs driving power to be supplied to a second light emitting unit, and the plurality of light emitting units comprise the first and the second light emitting units.