Micro LED Drive Circuit Gray Scale Control

The driving circuit is segmented into multiple functional sub-circuits: a compensation sub-circuit for threshold voltage compensation, a gray scale control sub-circuit for duration control, and a writing sub-circuit for signal input. This segmentation allows each sub-circuit to specialize in one function, ensuring complete and accurate threshold voltage compensation while maintaining precise gray scale control through independent duration control of the current path.

The driving circuit integrates multiple functions into a unified structure: the compensation sub-circuit performs threshold voltage compensation, the gray scale control sub-circuit controls the turned-on duration of the current path, and the writing sub-circuit writes input signals. This multi-functional integration achieves accurate gray scale control through duration control while maintaining a relatively compact circuit structure that avoids excessive complexity.

The gray scale control sub-circuit performs preliminary action by controlling the turned-on duration of the current path before the actual light emission occurs. By pre-controlling the duration for which the current flows through the light emitting element, the circuit achieves precise gray scale control without requiring complex real-time adjustment mechanisms during the light emission phase, thus balancing precision with manageable circuit complexity.