조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제26권9호
  • /
  • Pages.8-17
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  • 2012
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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LCD 백라이트를 위한 LED 드라이브 시스템의 고성능 제어

High Performance Control of LED Drive System for LCD Backlight

  • 투고 : 2012.03.02
  • 심사 : 2012.07.16
  • 발행 : 2012.09.30
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초록

This paper proposes high performance control of light emitting diode(LED) drive system for liquid crystal display(LCD) backlight. The CCFL(cold cathode fluorescent lamp)was used to a conventional LCD backlight. Due to improvement on luminous efficiency, long life and wide color gamut, LED has gradually substituted for CCFL as backlight. The backlight using LED is necessary to use many LED. For that reason, the LED backlight is using a lot of LED driving circuits. The many LED driving circuit is generated a current deviation between LED. Eventually, it is caused brightness deviation between LED. Therefore, this paper improves the current deviation using transformer and balancing capacitor to solve this problem. Also, for accurate and uniform brightness control, this paper is applied the artificial intelligent control to a dimming control. This paper is compared with conventional system, and validity of this paper proves through that result.

키워드

참고문헌

  1. Y. H. Liu, "Design and implementation of an FPGA-based CCFL driving system with digital Dimming capability," IEEE Trans. IE, vol. 54, no. 6, pp. 3307-3316, 2007.
  2. H. J. Chiu, S. J. Cheng, "Led backlight driving system for large-scale LCD panels," IEEE Trans. IE, vol. 54, no. 5, pp. 2751-2760, 2007.
  3. Y. H. Tsai, "Multiple CCFL current balancing scheme for single controller topology," U.S. Patent 6 459 216, Oct. 1, 2002.
  4. W. H. Lin, C. Y. Chen and D. K. Chang, "Multi-lamp driving system," U.S. 6 534 934 B1, Mar. 18, 2003.
  5. T. F. Wu, Y. C. Wu and Z. Y. Su, "Design consideration for single-stage electronic ballast with dimming feature," IEEE Trans. IA, vol. 37, no. 5, pp. 1537-1543, 2001.
  6. A. Konno, Y. Yamamoto and T. Innuzuka, "RGB color control system for LED backlight in IPS-LCD TVs," in Proc. SID'05 Conf., pp. 1380-1383, 2005.
  7. S. Muthu, F. J. Schuurmans and M. D. Pashley, "Red, green and blue LED based white light generation: Issues and control," in Proc. Ind. Appl. Conf., pp. 327-333, 2002.
  8. S. Muthu, F. J. Schuurmans and M. D. Pashley, "Red, green and blue LEDs for white light illumination," IEEE Trans. J. Sel. Top. Quant. Electron., vol. 8, no. 2, pp. 333-338, 2002. https://doi.org/10.1109/2944.999188
  9. S. Muthu and J. Gaines, "Red, green and blue LED-based white light source: Implementation challenges and control design," in Proc. Ind. Appl. Conf., pp. 515-522, 2003.
  10. P. Narra, D. S. Zinger, "An Effciency LED Dimming Approach", Industry Applications Conference, pp. 1671-1676, 2004.
  11. R. W. Erickson, D. Kaksimovic, "Fundamentals of Power Electronics, 2nd edition", KAP, 2001, pp. 15-22.

피인용 문헌

  1. Analysis on the Domestic and International Illumination Research Trends in 2012 and Further Study Suggestion vol.27, pp.12, 2013, https://doi.org/10.5207/JIEIE.2013.27.12.028