Patent ID: 8044984

Claim:
A method for driving an organic light emitting display (OLED) panel having a plurality of organic light emitting diodes, wherein the organic light emitting diodes are coupled to a plurality of segment lines and a plurality of common lines in a matrix structure, and the method comprises: dividing the organic light emitting diodes coupled to the same common lines into a plurality of groups according to colors of the OLED panel; and providing driving currents to the organic light emitting diodes of the groups according to a plurality of pulse width modulation (PWM) manners, each corresponding to different colors of the OLED panel, wherein the PWM manners generate waveforms having pulse width corresponding to grayscale in a period, and the PWM manners comprise: a first PWM manner forming waveforms increased in pulse width by measurement from a starting time of the period; a second PWM manner forming waveforms increased in pulse width by measurement from an ending time of the period; and a third PWM manner forming waveforms increased in pulse width by measurement between the starting time and the ending time of the period.