Data Driver Circuit Overlap Driving Fake Data Insertion

The patent applies local quality by differentiating the driving periods for different subpixel rows. Specifically, even-numbered subpixel rows are driven during a first driving period with overlapping scanning signals, while odd-numbered subpixel rows are driven during a second driving period without overlap. This localized differentiation allows each group to receive appropriate charging while maintaining consistent emission periods across all rows, thereby resolving the contradiction between charging sufficiency and image quality consistency.

The patent converts the potentially harmful effect of periodic bright stripes into a benefit by strategically inserting fake data (black data) at specific timing. The fake data is inserted during the period when even-numbered subpixel rows are being driven, specifically during the overlapping period of scanning signals. This timing conversion ensures that the fake data compensates for luminance differences without creating visible artifacts, as the even-numbered rows are already in their emission period and the fake data serves as a reference for uniformity correction.

The patent applies preliminary action by pre-adjusting the data voltage for even-numbered subpixel rows before the fake data insertion point. Specifically, during the overlapping period of scanning signals for even-numbered rows, the data voltage is adjusted to account for the upcoming fake data insertion. This preliminary adjustment ensures that when the fake data is inserted, it does not create a sudden voltage transition that would manifest as bright stripes, while still maintaining the charging benefits of overlap driving.