Organic light emitting display having threshold voltage compensation mechanism and driving method thereof

A driving method, comprising:

• providing an organic light emitting display having threshold voltage compensation mechanism, the organic light emitting display comprising:
• an input unit for outputting a preliminary control voltage according to a data signal and a first scan signal;
• a voltage adjustment unit for adjusting the preliminary control voltage according to an emission signal and a second reference voltage;
• a couple unit for adjusting a control voltage through coupling a change of the preliminary control voltage;
• a driving unit for providing a driving current and a driving voltage according to the control voltage and a power voltage;
• a first reset unit for resetting the driving voltage according to a second scan signal and a first reference voltage;
• a second reset unit for resetting the control voltage according to the first scan signal and the driving voltage;
• an organic light emitting diode for generating output light according to the driving current;
• and
• an emission enable unit for providing a control of furnishing the driving current to the organic light emitting diode according to the emission signal;
• providing the first scan signal with a first level to the input unit and the second reset unit, providing the second scan signal with the first level to the first reset unit, providing the emission signal with a second level different from the first level for disabling a voltage adjusting operation of the voltage adjustment unit and disabling a current furnishing operation of the emission enable unit, and providing the data signal to the input unit during a first interval;
• the input unit outputting the preliminary control voltage according to the data signal and the first scan signal during the first interval;
• the first reset unit resetting the driving voltage according to the second scan signal and the first reference voltage during the first interval;
• the second reset unit resetting the control voltage according to the first scan signal and the driving voltage during the first interval;
• switching the second scan signal from the first level to the second level for disabling a resetting operation of the first reset unit during a second interval following the first interval;
• the second reset unit and the driving unit performing a threshold voltage compensation operation on the control voltage according to the first scan signal and the power voltage during the second interval;
• switching the first scan signal from the first level to the second level for disabling a resetting operation of the second reset unit and disabling an inputting operation of the input unit during a third interval following the second interval;
• switching the emission signal from the second level to the first level during a fourth interval following the third interval;
• the voltage adjustment unit adjusting the preliminary control voltage according to the emission signal and the second reference voltage during the fourth interval;
• the couple unit adjusting the control voltage through coupling a change of the preliminary control voltage during the fourth interval;
• the driving unit providing the driving current according to the control voltage and the power voltage during the fourth interval;
• the emission enable unit furnishing the driving current to the organic light emitting diode according to the emission signal during the fourth interval;
• and
• the organic light emitting diode generating output light according to the driving current during the fourth interval.