Pixel Structure With Multiple TFTs for Stable Charging

The pixel unit is segmented to include multiple thin film transistors (first TFT, second TFT, and third TFT) instead of a single TFT. Each TFT has different reverse breakdown voltage characteristics, allowing them to charge the pixel electrode at different voltage levels and timing, thereby improving charging reliability and eliminating flickering while maintaining manageable device complexity through systematic segmentation of the control function.

Each thin film transistor is designed with specific local quality characteristics, particularly different reverse breakdown voltages. The first TFT, second TFT, and third TFT have progressively different breakdown voltage thresholds, allowing them to activate at different voltage levels during the charging process. This local differentiation ensures consistent gray scale changes across the display panel while maintaining a manufacturing process that extends conventional TFT fabrication techniques.

The invention utilizes parameter changes in the reverse breakdown voltage of the thin film transistors as the key differentiating feature. By designing TFTs with specific, progressively varying reverse breakdown voltage parameters, the system achieves reliable and differentiated charging control. This parameter-based differentiation allows multiple TFTs to perform distinct functions without requiring complex control circuits, thereby improving charging reliability while keeping the overall device complexity manageable through passive parameter variation rather than active control complexity.