New Design of Integrated Power and Integrated Driver with LED Module (IP-IDLM) Driving System for LED Backlight in LCD

New design of integrated power and integrated driver with LED module (IP-IDLM) driving system with microcontroller for RGB-LED backlight in LCD has been proposed. The DC-DC converters in the conventional driver have been integrated into the main set power and the constant current control circuits in the conventional driver have been merged into the LED modules composed of LED arrays on the substrate so that we have accomplished the driver board eliminations from the LED backlight. In the system aspect, the system power efficiency could be increased and it´s capable of achieving a perfect linearity characteristic of driver so that a stable constant current source is entirely maintained.