Display Driver Pre-Charge Voltage Uniformity

The patent applies local quality by setting different pre-charge voltage levels for different regions of the display driver. Specifically, a first pre-charge voltage is applied to data lines at the end portion in the long side direction, while a second pre-charge voltage (higher than the first) is applied to data lines at the center portion. This regional differentiation compensates for the non-uniform voltage distribution caused by parasitic resistance and capacitance in the wiring lines, thereby maintaining uniform pre-charge voltage supply across all pixels even as the number of pixels increases.

The patent implements local quality by differentiating the pre-charge voltage supply based on the spatial position of the data lines. Data lines at the center portion in the long side direction receive a higher pre-charge voltage compared to those at the end portion. This approach directly addresses the non-uniform supply capability caused by the increased number of D/A conversion circuits and amplifier circuits, ensuring reliable and uniform pre-charge voltage delivery across the entire display driver.

The patent applies local quality by implementing region-specific pre-charge voltage levels. The display driver is divided into at least two regions: an end portion and a center portion in the long side direction. Each region receives a tailored pre-charge voltage level to compensate for its specific electrical characteristics and parasitic effects. This approach achieves effective charge leakage equalization across different regions while maintaining a relatively simple circuit configuration, as the differentiation is achieved through voltage level adjustment rather than complex additional circuitry.