Display Device Synchronized Emission Timing for Luminance Uniformity

The patent applies preliminary action by adjusting the scan signal timing in advance before the emission period begins. Specifically, the scan signal for the first horizontal line is applied earlier than for the second horizontal line during the data write period, ensuring that all pixels have their data voltage fully established before simultaneous light emission begins. This pre-adjustment of timing prevents luminance deviation during the actual emission phase.

The patent implements parameter changes by modifying the timing parameters of scan signals applied to different horizontal lines. The emission start time and emission end time are synchronized across all pixels, while the data write period duration is adjusted based on the horizontal line position. This parameter adjustment ensures uniform luminance output despite different write timing requirements for different scan lines.

The patent ensures data voltage stability is achieved through preliminary action by extending the data write period for earlier scan lines before the emission phase. The scan signal timing is adjusted so that pixels on the first horizontal line receive their data voltage earlier and maintain it through the emission period, while pixels on subsequent lines receive data voltage at appropriately staggered times. This preliminary voltage establishment ensures all pixels are ready for simultaneous emission with consistent luminance.

The patent applies dynamics by making the data write period variable rather than fixed for all horizontal lines. The write period duration and timing are dynamically adjusted based on the scan line position, with earlier lines receiving longer or earlier write periods. This dynamic timing adjustment ensures that despite different maintenance periods, all pixels achieve uniform luminance output during the synchronized emission phase.