한국정보디스플레이학회:학술대회논문집
- 2008.10a
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- Pages.1503-1506
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- 2008
Current Controlled X-Y Channel Driving White LED Backlight System for 46" LCD TV
- Cho, Dae-Youn (Display Research Center, KAIST) ;
- Oh, Won-Sik (Display Research Center, KAIST) ;
- Cho, Kyu-Min (Display Research Center, KAIST) ;
- Moon, Gun-Woo (Display Research Center, KAIST) ;
- Yang, Byung-Choon (LCD Development Center, Samsung Electronics Co.Ltd.) ;
- Jang, Tae-Seok (LCD Development Center, Samsung Electronics Co.Ltd.)
- Published : 2008.10.13
Abstract
A novel white-LED (light emitting diode) backlight system for 46"LCD TVs which involves the current controlled X-Y channel driving method is proposed in this paper. There are two problems related to the LED current in the conventional X-Y channel driving driven by a constant voltage source. To solve these problems, a real time current sensing system is applied to the conventional one and the time-division current sensing method is employed.