OLED Driving Method Optimizing Sub-Frame Timing

The patent applies preliminary action by performing the writing operation for subsequent sub-frames during the light-emitting period of current sub-frames. Specifically, while the OLED pixels are emitting light in sub-frame SF[i], the driving circuit simultaneously writes data for sub-frames SF[i+1] and SF[i+2], so that when SF[i+1] needs to emit, its data is already prepared. This overlap of writing and light-emitting operations eliminates idle time and removes the excessive non-light-emitting periods.

The patent implements continuity of useful action by ensuring that the finite frame time is continuously utilized for productive purposes. The writing period and light-emitting period are overlapped such that while light-emitting is occurring, writing for subsequent frames is simultaneously performed. This eliminates gaps where neither writing nor light-emitting is occurring, making continuous use of the available frame time for display-related operations.

The patent uses preliminary action by preparing data for multiple future sub-frames (SF[i+1] and SF[i+2]) during the light-emitting period of the current sub-frame SF[i]. This advance preparation ensures that when the subsequent sub-frames need to emit light, their data is already written and ready, eliminating the need for separate non-light-emitting periods for data preparation.

The patent applies dimensionality change by transitioning from a sequential execution model (writing completes before light-emitting starts) to a temporal overlap model where writing and light-emitting occur simultaneously in different sub-frames. This is achieved by controlling the timing signals to initiate writing operations for SF[i+1] and SF[i+2] during the light-emitting period of SF[i], effectively utilizing the time dimension to resolve the contradiction.