전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2008년도 하계학술대회 논문집
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- Pages.335-337
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- 2008
An X-Y Channel Dimming LED Backlight with Temperature Compensation for LCD TVs
- Oh, Won-Sik (Display Research Center, Korea Advanced Institute of Science and Technology (KAIST)) ;
- Cho, Dea-Youn (Display Research Center, Korea Advanced Institute of Science and Technology (KAIST)) ;
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Moon, Gun-Woo
(Display Research Center, Korea Advanced Institute of Science and Technology (KAIST))
- 발행 : 2008.06.30
초록
In this paper, an X-Y channel dimming light emitting diode (LED) backlight with temperature compensation for in LCD TVs is proposed. It shows local dimming effects such as reduced power consumption and high dynamic contrast ratio even with much less number of LED drivers than that of the conventional two-dimensional local dimming method. Moreover, the image distortion caused by temperature variation of LED block can be effectively compensated. The validity of the proposed dimming method is verified by simulation and experimental results based on a RGB-LED backlight of a 32-inch LCD TV.
키워드