Pixel Circuit for Micro LED Brightness Uniformity

The pixel circuit is segmented into multiple functional modules: data writing circuit (first data signal writing transistor), light-emission adjusting circuit (first node potential adjustment transistor, second node potential adjustment transistor), light-emission control circuit (third node potential adjustment transistor), and light-emission driving circuit (driving transistor). Each module independently controls a specific aspect of the light-emitting duration, enabling precise brightness uniformity control without excessive overall complexity.

The circuit dynamically adjusts the potentials of first node, second node, and third node through controlled charging and discharging processes. The light-emitting duration is dynamically determined by the potential evolution at these nodes, allowing the circuit to adapt to different display requirements and achieve uniform brightness across varying conditions.

The circuit employs periodic charging and discharging cycles at the first node, second node, and third node to control the light-emitting duration. By regulating the frequency and duration of these periodic potential adjustments, the circuit achieves precise grayscale control while managing power consumption through controlled timing rather than continuous high-current operation.

The circuit changes the potential parameters at different nodes (first node potential, second node potential, third node potential) to control the light-emitting duration. By adjusting these voltage parameters through the respective control transistors, the circuit achieves variable grayscale levels without requiring proportional increases in power consumption, as the control is achieved through timing and potential levels rather than current magnitude alone.