Patent ID: 9066399
Filing Date: 2015-06-23
Classification: H05B

Abstract:
1. An illumination driving apparatus for a light emitting diode, the apparatus comprising: a light emitting unit including M number of light emitting diodes (LEDs) connected in series and driven by an output voltage rectified in a rectifying unit; an LED switch unit including N number of LED switches connected in parallel with at least N number of the M number of LEDs, respectively, the N number of LED switches being connected in series with one another; an LED switch control signal generating unit comparing the output voltage of the rectifying unit with each of the first to Nth preset reference voltages to generate N number of LED switch control signals controlling the LED switch unit; and an LED switch controlling unit transferring the N number of LED switch control signals to the LED switch unit so as to change turn on or turn off operations of the N number of LED switches in respective N periods of the output voltage of the rectifying unit.