Display Panel Driving Method for Uniform Sub-Pixel Charging

The patent segments data voltages into multiple voltage groups based on polarity characteristics. Each voltage group contains data voltages with the same polarity, and adjacent voltage groups have opposite polarities. This segmentation allows for systematic polarity reversal control, ensuring that sub-pixels are uniformly charged by compensating for residual charges through controlled polarity alternation, thereby resolving the brightness non-uniformity issue without excessive complexity.

The patent implements periodic polarity reversal by alternating the polarity of adjacent voltage groups in a regular pattern. This periodic action ensures that residual charges in sub-pixels are systematically compensated, leading to uniform charging across all sub-pixels. The periodic nature of the polarity reversal provides a simple yet effective mechanism to maintain display quality without requiring complex real-time adjustments.

By segmenting data voltages into polarity-based groups, the patent creates a structured approach to polarity reversal. This segmentation makes the control process more manageable and systematic, improving ease of operation compared to unstructured polarity reversal. The grouped structure allows for predictable and repeatable charging patterns across sub-pixels, ensuring brightness uniformity while maintaining operational simplicity.

The patent changes the polarity parameter of data voltages in a systematic manner by grouping them. This parameter change approach allows for controlled polarity reversal that maintains charging uniformity. By organizing voltages into groups with specific polarity characteristics, the control process becomes more straightforward while achieving the desired brightness uniformity across the display.

The patent applies preliminary action by inputting reference voltage before data voltage to prepare the data lines and sub-pixels for uniform charging. This preliminary step establishes a consistent baseline voltage level, ensuring that subsequent data voltages are applied uniformly across all sub-pixels. The reference voltage input improves color accuracy by preventing charging inconsistencies, while the streamlined process maintains acceptable driving speed.

By changing the voltage parameter systematically through reference voltage input followed by grouped data voltages, the patent achieves both color accuracy and acceptable driving speed. The parameter change approach creates a predictable charging sequence that maintains uniformity without requiring excessive time, balancing precision and productivity.