A method and a circuit for driving light emitting diodes (LEDs) in multiphase are provided. A string of LEDs divided into groups connected to each other in series is provided. Each group is coupled to ground through separate conductive paths. A phase switch is provided in each conductive path. Increasing...http://www.google.se/patents/US7081722?utm_source=gb-gplus-sharePatent US7081722 - Light emitting diode multiphase driver circuit and method
