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Electrical and Thermal Characteristics of a Burst Dimming Piezoelectric Inverter

버스트 디밍 압전인버터의 전기적 특성 및 온도 특성

  • Published : 2006.09.01

Abstract

This paper explains the design and fabrication of an inverter for LCD backlight using a multilayer piezoelectric transformer. That inverter is operated by the burst dimming method whose dimming signal is controlled by the duty ratio of rectangular switching signal to a PWM controller. The brightness of CCFL's are investigated according to the various dimming signals, and when those CCFL's are turned on, the temperature distributions on the piezoelectric transformer and circuit components of the inverter are also investigated by a thermo-camera.

References

  1. Y. Shimada, S. Kawashima, N. Furuhashi, M. Sugimoto, Y. Sato, H. Suzuki, and K. Isobe, 'LCD backlight inverter using piezoelectric transformer', NEC Technical Report, Vol. 48, No. 48, p. 10, 1995
  2. C. Y. Lin, 'Development of piezoelectric transformer converter', VPEC Power Electron. Sem. Proc, p. 79, 1993
  3. H. Kawai, Y. Sasaki, T. Inoue, T. Inoi, and S. Takahashi, 'High power transformer employing piezoelectric ceramics', Jpn. J. Appl, Phys., Vol. 35, p. 5015, 1996
  4. 박지식, '압전 세라믹 변압기의 구동회로 기술', 전기전자재료, 12권, 5호, p. 17, 1999
  5. S. Hamamura and T. Zaitsu, 'AC-DC converter using piezoelectric transformer', NEC Technical Report, Vol. 51, No.4, 1998
  6. C. Y. Lin and F. C. Lee, 'Piezoelectric transformer and its applications', VPEC Power Electron. Sem. Proc., p. 607, 1995
  7. M. Shoyarna, K. Horikoshi, T. Ninomiya, T. Zaitsu, and Y. Sasaki 'Operation Analysis of the Push-pull Piezoelectric Transformer Inverter', IEEE APEC'97 Record, p. 573, 1997
  8. 'Piezoelectric ceramics items', Tamura Corporation catalog, p. 72, 2003
  9. 'DC/ AC Inverter Piezoelectric Inverter for Cold Cathode Fluorescent Lamp', Empro Technology Corporation catalog