Source Driver Voltage Timing for Display Uniformity

The source bus lines are divided into multiple groups based on their load characteristics and lengths. Different groups are assigned different voltage application timing, with longer bus lines receiving voltages earlier than shorter bus lines. This segmentation allows each group to be optimized independently, resolving the settling time differences that cause luminance non-uniformity while maintaining a manageable control structure.

Data voltages are applied to source bus lines in advance of the actual display refresh cycle, with longer bus lines receiving their voltages before shorter bus lines. This preliminary action ensures that all bus lines have sufficient time to settle to their target voltages before the display operation begins, eliminating the luminance non-uniformity caused by differential settling times.

Different source bus lines are assigned different voltage application timings based on their local characteristics, specifically their length and load. Longer bus lines (typically at edges) receive voltages earlier than shorter bus lines (typically at centers). This local quality approach ensures that each bus line has adequate settling time relative to its specific characteristics, achieving both fast refresh and uniform display.

The voltage application timing parameter is varied across different source bus lines based on their load characteristics. By changing the timing parameter dynamically for different bus lines rather than using a uniform timing, the system achieves optimal settling for each bus line while maintaining high refresh speeds overall.