The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Study on the Contrast Ratio Improvement of Surface Discharge AC PDP

면방전 AC PDP에서 콘트라스트 개선에 관한 연구

  • Published : 2002.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a method to drive an AC plasma display panel(PDP) with a significantly improved contrast ratio. In the proposed method, during the first sub-field of one frame, all PDP cells are reset by the ramp waveform, and during the other sub-field, only the cells turned on in the previous sub-field are reset. No light is emitted during the reset period of every sub-field except the first sub-field. For a 10-bit picture, the luminance of the dark level for the proposed method is 10 times lower than that for the conventional method, in which the ramp waveform for the reset is used in every sub-field. Accordingly, the contrast ratio for the proposed method is 10 times higher than that for the conventional method. For the 10-bit picture, the measured contrast ratio was about 3080:1 for the proposed method and about 285:1 with the conventional method, a result the contrast ratio has been increased in 10.8 times. This result shows that the proposed method can realize an image with high contrast ratio.

Keywords

References

  1. 황기웅외 7명, '디스플레이공학II', 청범출판사, pp.7-15, 2000. 9
  2. Y. Takano, et al., 'Late-News paper: A 40-in. DC-PDP with New Pulse-Memory Drive Scheme', SID'94 Digest, pp.731-734, 1994
  3. T. Shinoda, et al., 'Surface-Discharge PDP with 3 electrodes', SID'84 Digest, 1984
  4. Lawrence E. Tannas, Jr, 'Flat-Panel Displays and CRTs', New York Van Nostrand Reinhold Company, 1985
  5. 나가오까게이신, '플라즈마 표시 장치의 그레이 스케일 제어방법 및 제어장치', 공개특허 공보 95-15187, 1995. 6. 16
  6. T. Shinoda, A. Ohtsuka, T. Hirose, A. Niinuma, 'Green Sufrace-Discharge Plasma Decode Displays', 86 International Display Research Conference, pp.51-54, 1985
  7. S. Yoshikawa et al, 'Full-color AC Plasma Display with 256 gray scale', Japan Display, pp.605-608. 1992
  8. Tsutae. Shinoda, 'Method and a circuit for gradationally driving a flat display device', United States Patent 5541618, 1996. 6. 30
  9. H. Homma, K. Totoki, K. Igarashi, S. Mikoshiba, H. Asai, and N. Kikuchi, 'Luminance improvement of PDPs by an extention of light-emission duty to 90% with an HDTV capability', IDRC'97, pp.285-288, 1997
  10. Larry F. Weber, 'Power efficient sustain drivers and address drivers for plasma panel', United States Patent 5081400, 1992. 7. 14