The Structure Of LED Backlight

The LED backlight structure is mainly divided into two types, a single group of series power supply or multiple groups of series / parallel power supply. Although a single group of series power supplies uses a lower constant current, the input power must be boosted to a level consistent with the total forward voltage of the series power supply before the LEDs can be driven. Conversely, multiple sets of series/parallel LED power supplies require higher constant current to drive, but reduce the need for high voltage. Boost converter requirements vary depending on cost, complexity, and energy conversion efficiency (which, for the user, equates to battery life between charge cycles). Ultimately, the best solution will be determined based on the product characteristics, size and performance requirements of the device itself.