OLED Scan Line Brightness Compensation via Dynamic Timing

The patent applies local quality by differentiating the driving signal characteristics for different regions of the display panel. Specifically, it extends the time interval for data line driving signals in regions where current reduction is more severe (such as edge regions), while maintaining standard timing in other regions. This localized adjustment compensates for the non-uniform current distribution caused by interlaced scan lines, ensuring uniform brightness across the entire panel while preserving the energy efficiency benefits of interlaced scanning.

The patent implements dynamics by making the data line driving time interval variable rather than fixed. The time interval is dynamically adjusted based on the specific data line position and the corresponding current reduction characteristics. Regions with greater current reduction receive extended driving time, while regions with lesser reduction maintain standard timing. This dynamic adjustment allows brightness uniformity compensation without uniformly slowing down the entire display refresh rate.

The patent applies preliminary action by pre-calculating and storing compensation data in a lookup table (LUT) before the actual display operation. The LUT contains pre-determined time interval adjustments for different data line positions, allowing the system to quickly retrieve and apply appropriate compensation without complex real-time calculations. This approach maintains relatively simple circuit architecture while achieving effective brightness uniformity compensation in large-sized panels.