×

Light emitting diode and display device using the same

  • US 7,518,525 B2
  • Filed: 01/15/2007
  • Issued: 04/14/2009
  • Est. Priority Date: 11/06/2006
  • Status: Expired due to Fees
First Claim
Patent Images

1. An LED driver, for driving a first set of LEDs and a second set of LEDs, comprising:

  • an inductor, having a first terminal, for receiving an input voltage;

    a main switch, having a first terminal coupled to a second terminal of the inductor and a second terminal coupled to a common level, for adjusting a current of the inductor;

    a first switch, having a first terminal coupled to the first set of LEDs and a second terminal coupled to the second terminal of the inductor;

    a second switch, having a first terminal coupled to the second set of LEDs and a second terminal coupled to the second terminal of the inductor; and

    a controller, coupled to controlling terminals of the main switch, the first switch and the second switch respectively, for controlling conducting statuses thereof.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×