Gate Drive Signal Compensation for Liquid Crystal Display Uniformity

The patent segments the scanning lines into groups (e.g., even rows and odd rows) and applies different gate drive signal durations to different groups. Specifically, scanning lines in the first group receive gate drive signals with duration T, while scanning lines in the second group receive signals with duration T+Δt. This segmentation allows selective charging compensation for specific row groups that exhibit insufficient charging, thereby reducing bright/dark stripes and improving display uniformity without uniformly increasing power consumption across all rows.

The patent changes the parameter of gate drive signal duration (high-level duration) based on the charging status of different scanning line groups. By adjusting the duration from T to T+Δt for specific groups, the patent dynamically modifies the charging time parameter to ensure adequate voltage establishment in pixels of groups that previously suffered from insufficient charging. This parameter change directly addresses the bright/dark stripe issue while controlling overall power consumption increases.

The patent divides scanning lines into multiple groups and applies different charging durations to different groups. Scanning lines in the first group use standard charging time T, while scanning lines in the second group use extended charging time T+Δt. This segmentation enables targeted extension of charging time only for groups that require it, eliminating bright/dark stripes caused by insufficient charging without unnecessarily extending charging time for all rows.

The patent implements dynamic adjustment of charging time based on the specific needs of different scanning line groups. The gate drive signal duration is dynamically changed from a fixed value T to variable values (T or T+Δt) depending on the group identifier. This dynamic approach ensures that charging time is extended only when necessary, optimizing the balance between display uniformity and charging efficiency.

The patent applies different gate drive signal durations to different local groups of scanning lines based on their specific charging requirements. Instead of uniformly increasing the duration for all rows, the patent identifies specific groups (e.g., even rows or odd rows) that require extended charging time T+Δt, while leaving other groups with the standard duration T. This local quality approach ensures charging saturation is achieved only where needed, minimizing unnecessary power consumption increases.

The patent selectively changes the gate drive signal duration parameter for specific scanning line groups rather than applying a universal increase. The duration parameter is set to T+Δt for groups requiring additional charging time and remains at T for groups that are adequately charged. This selective parameter change achieves charging saturation in problematic areas while controlling overall power consumption.