LED Backlight Temperature Control via Segmented Driving Circuit

The backlight unit is divided into multiple LED strings, and each LED string is further divided into multiple light emitting elements. Temperature sensors are individually placed for each LED string to detect temperature separately. This segmentation allows independent temperature-based control of each string, enabling precise heat management across large display areas without excessive heat accumulation in any single region.

The driving current of each LED element is dynamically adjusted based on real-time temperature detection. The control circuit continuously monitors temperature via sensors and modifies the driving current accordingly - reducing current when temperature rises and maintaining or increasing it when temperature is acceptable. This dynamic control allows the system to maximize brightness when conditions permit while preventing excessive heat generation, creating an adaptive balance between illumination intensity and thermal management.

The control circuit is designed with universal functionality to handle temperature-based control for all LED strings through a standardized approach. Rather than implementing separate control mechanisms for each string, a single multi-functional control circuit processes temperature data from multiple sensors and adjusts driving currents across all strings using统一的 control logic. This universal design achieves comprehensive heat management while minimizing the increase in device complexity.