Central Scan Driver for Large Display Luminance Deviation

The scan driver is divided into multiple independent scan drivers (first scan driver, second scan driver, third scan driver) positioned at different locations of the display panel. Each scan driver independently supplies scan signals to a specific region, eliminating the need for long signal transmission paths and preventing scan signal delay that would cause luminance deviation in large display panels.

Different regions of the display panel are assigned different scan driver configurations. The central area has a third scan driver with correspondingly sized subpixels, while edge areas have first and second scan drivers with larger subpixels. This local adaptation allows each region to have optimized subpixel sizes suitable for its specific scan driver arrangement, preventing scan signal delay in the central area while maintaining acceptable subpixel sizes at the edges.

Different scan drivers are configured with different output buffer sizes according to their specific requirements. The central scan driver (third scan driver) is equipped with a small output buffer that is sufficient for its central positioning and shorter signal paths, while edge scan drivers (first and second scan drivers) have larger output buffers to compensate for their positioning at panel edges with longer signal paths. This localized optimization reduces overall device complexity while maintaining adequate output signal strength for each region.