Patent ID: 7710361

Claim:
A method comprising: controlling a supply of a p-th frame of a first driving signal to begin at a first start time point, and a supply of a q-th frame of a second driving signal to begin at a second time point, wherein a duration of one or more periods of an r-th subfield of the q-th frame is different than a duration of the corresponding periods of an r-th subfield of the p-th frame, wherein the supply of the first and second driving signals are controlled such that, at a first set of reference time points occurring a respective set of reference lengths of time after the first start time point: a ratio of a duration of a reset, address, or sustain period of each of the subfields of the p-th frame of the first driving signal that has been supplied up to the corresponding time point in the first set of reference time points, to a total duration of the reset, address, or sustain period, is equal to a ratio of a duration of the corresponding reset, address, or sustain period of each of the subfields of the q-th frame of the second driving signal that has been supplied up to a corresponding time point in a second set of reference time points, to a total duration of the corresponding reset, address, or sustain period, the second set of reference time points occurring the set reference lengths of time after the second start time point, and wherein the set reference lengths of time are respectively equal to lengths of time between the first time point and a light emission center of the reset, address, or sustain period of each of the subfields of the p-th frame.