A circuit for driving at least one light emitting diode (LED) of a display based on a greyscale vector. The circuit includes brightness scale detection circuitry to determine a brightness value based on the greyscale vector and refresh cycle selection circuitry to output an indication of a subset of refresh cycles, referred to as dithered refresh cycles. The circuit also includes pulse width determination circuitry to define a pulse width based on the greyscale vector. Pulse adjustment control circuitry, for each dithered refresh cycle, determines a dithered pulse width by adjusting the pulse width by a width adjustment amount, and outputs a dithered pulse width modulation signal including a series of pulses including a pulse having the pulse width determined by the pulse width determination circuitry non-dithered refresh cycles and a pulse having the dithered pulse width for the dithered refresh cycles.