Pixel Pre-Charging for Luminance Uniformity

The patent applies preliminary action by pre-charging the light emitting element with a varying second initialization voltage before the emission period. This pre-charging action compensates for deterioration deviations in advance, ensuring that even as the light emitting element deteriorates over time, the luminance remains uniform across the display. The second initialization voltage is specifically varied to counteract the cumulative deterioration effect.

The patent implements parameter changes by varying the second initialization voltage applied to the light emitting element. Instead of using a fixed initialization voltage, the patent changes this parameter (voltage level) to compensate for deterioration deviations. This parameter adjustment ensures that the luminance output remains consistent even as the light emitting element's characteristics change over time due to deterioration.

The patent applies universality by designing the pixel structure with multiple transistors that serve multiple functions. For example, the transistors are involved in both data signal writing and initialization voltage application, and the power voltage management system handles both constant and variable voltage levels. This multi-functionality allows the patent to achieve luminance uniformity compensation without proportionally increasing device complexity.

The patent implements segmentation by dividing the pixel structure into distinct functional components with specific transistors dedicated to particular tasks (data writing, initialization, emission control). This segmentation allows for precise control of the driving current and initialization voltage, enabling effective luminance uniformity compensation while maintaining a manageable level of complexity through organized functional modules.