한국정보디스플레이학회:학술대회논문집
- 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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- Pages.1642-1645
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- 2007
New Driving Method of High Brightness LED Backlight Using Active Current Source
- Hwang, S. (Information Display Research Center, Dankook University) ;
- LEE, J. (Information Display Research Center, Dankook University) ;
- Lim, S. (Information Display Research Center, Dankook University) ;
- Oh, M.H. (Information Display Research Center, Dankook University)
- 발행 : 2007.08.27
초록
The brightness of LED changes according to the current flowing through LEDs. The current mirror was used to drive LEDs effectively. The reference current of the current mirror was usually controlled by the resistor but the size of this resistor is very large and this resistor consumes too much power for high power LED backlight driving. The reference current of the current mirror LED driver was controlled by using flyback converter at small size with low power consumption in this paper. The concept of active current source was presented.