New Design and Application of High Efficiency LED Driving System for RGB-LED Backlight in LCD Display

Novel RGB-LED driving system for LED backlight in LCD display have been developed and demonstrated. The driving system consists of the non-isolation type high efficiency constant current DC-DC converter and the dynamic controller with microcontroller. The efficiency of driver is up to 94.4% and the maximum color deviation, Δu'v', from the target is 0.002.

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