Abstract

Despite rapid advances in science and technology of liquid crystal display (LCD); elimination of motion-related artifacts and preservation of color purity in moving images have remained elusive because gray-scale to gray-scale response time, i.e., time taken to switch pixels from one gray-scale to another depends on the initial and final gray shades. A technique wherein gray scale to gray scale response times are less dependent on the initial and final gray shades as compared to other addressing techniques for driving matrix LCD is reported. We also found that the response times are about the same as that of a pixel driven with simple square waveforms and, therefore, the effect of duty cycle due to matrix addressing is minimal with distributed waveforms of this technique.

© 2009 IEEE

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  1. J. E. Bigelow, R. A. Kashnow, C. R. Stein, "Contrast optimization in matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-22, 22-24 (1975).
  2. P. F. Robusto, L. T. Lipton, "Multiplexing and contrast optimisation for matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-23, 1344-1345 (1976).
  3. Igarashi, Youichi, T. Yamamoto, Y. Tanaka, J. Someya, Y. Nakakura, M. Yamakawa, Y. Nishida, T. Kurita, "Summary of moving picture response time (MPRT) and features," SID Symp. Dig. Tech. Papers, 2004 pp. 1262-1265.
  4. T. N. Ruckmongathan, "A generalized addressing technique for RMS responding matrix LCDs," Proc. Int. Display Res. Conf. (1988) pp. 80-85.
  5. T. N. Ruckmongathan, "Novel addressing methods for fast responding LCDs," Asahi Garasu Kenkyu Hokoku 43, 65-87 (1993).
  6. T. J. Scheffer, B. Clifton, "Active addressing method for high-contrast video-rate STN displays," SID Dig. Tech. Papers, 1992 pp. 228-231.
  7. T. N. Ruckmongathan, P. N. Rao, A. Prasad, "Wavelets for displaying gray shades in LCDs," SID Int. Symp., Dig. Tech. Papers, 2005 pp. 168-171.
  8. T. N. Ruckmongathan, U. Manasa, R. Nethravathi, A. R. Shashidhara, "Integer wavelets for displaying gray shades in RMS responding displays," J. Display Technol. 2, 292-299 (2006).
  9. T. N. Ruckmongathan, D. S. Nadig, P. R. Ranjitha, "Gray shades in RMS responding displays with wavelets based on the slant transform," IEEE Trans. Electron Devices 54, 663-670 (2007).
  10. A. R. Shashidhara, T. N. Ruckmongathan, "Design and implementation of the wavelet based addressing technique (WAT)," J. Soc. Inf. Display 15, 213-223 (2007).
  11. T. N. Ruckmongathan, "Addressing techniques for RMS responding LCDs-A review," Proc. Japan Display'92 (1992) pp. 77-80.
  12. S. Gopalan, T. N. Ruckmongathan, "Modified discrete cosine transform for addressing liquid crystal displays," Soc. Inf. Symp. Dig. Tech. Papers, 2008 pp. 1877-1880.
  13. N. Ahmed, K. R. Rao, Orthogonal Transforms for Digital Signal Processing (Springer-Verlag, 1975) pp. 169-171.
  14. N. Ahmed, T. Natarajan, K. R. Rao, "Discrete cosine transforms," IEEE Trans. Computers 23, 90-93 (1974).
  15. N. A. Lawrence, T. D. Wilkinson, W. A. Crossland, "Combined image decompression and display driving using wavelets based multiple line addressing," SID Int. Symp. Dig. Papers, 2001 pp. 98-101.
  16. K. E. Kuijk, "Combining passive and active matrix addressing of LCDs," J. Soc. Inf. Display 4, 9-17 (1996).
  17. K. Seikya, H. Nakamura, "Overdrive method for TN-mode LCDs-recursive systems with capacitive predictions," SID. Int. Symp. Dig. Tech. Papers, 2001 pp. 114-117.

2007 (2)

T. N. Ruckmongathan, D. S. Nadig, P. R. Ranjitha, "Gray shades in RMS responding displays with wavelets based on the slant transform," IEEE Trans. Electron Devices 54, 663-670 (2007).

A. R. Shashidhara, T. N. Ruckmongathan, "Design and implementation of the wavelet based addressing technique (WAT)," J. Soc. Inf. Display 15, 213-223 (2007).

2006 (1)

1996 (1)

K. E. Kuijk, "Combining passive and active matrix addressing of LCDs," J. Soc. Inf. Display 4, 9-17 (1996).

1993 (1)

T. N. Ruckmongathan, "Novel addressing methods for fast responding LCDs," Asahi Garasu Kenkyu Hokoku 43, 65-87 (1993).

1976 (1)

P. F. Robusto, L. T. Lipton, "Multiplexing and contrast optimisation for matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-23, 1344-1345 (1976).

1975 (1)

J. E. Bigelow, R. A. Kashnow, C. R. Stein, "Contrast optimization in matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-22, 22-24 (1975).

1974 (1)

N. Ahmed, T. Natarajan, K. R. Rao, "Discrete cosine transforms," IEEE Trans. Computers 23, 90-93 (1974).

Asahi Garasu Kenkyu Hokoku (1)

T. N. Ruckmongathan, "Novel addressing methods for fast responding LCDs," Asahi Garasu Kenkyu Hokoku 43, 65-87 (1993).

IEEE Trans. Computers (1)

N. Ahmed, T. Natarajan, K. R. Rao, "Discrete cosine transforms," IEEE Trans. Computers 23, 90-93 (1974).

IEEE Trans. Electron Devices (3)

J. E. Bigelow, R. A. Kashnow, C. R. Stein, "Contrast optimization in matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-22, 22-24 (1975).

P. F. Robusto, L. T. Lipton, "Multiplexing and contrast optimisation for matrix addressed liquid crystal displays," IEEE Trans. Electron Devices ED-23, 1344-1345 (1976).

T. N. Ruckmongathan, D. S. Nadig, P. R. Ranjitha, "Gray shades in RMS responding displays with wavelets based on the slant transform," IEEE Trans. Electron Devices 54, 663-670 (2007).

J. Display Technol. (1)

J. Soc. Inf. Display (2)

K. E. Kuijk, "Combining passive and active matrix addressing of LCDs," J. Soc. Inf. Display 4, 9-17 (1996).

A. R. Shashidhara, T. N. Ruckmongathan, "Design and implementation of the wavelet based addressing technique (WAT)," J. Soc. Inf. Display 15, 213-223 (2007).

Other (9)

T. N. Ruckmongathan, "Addressing techniques for RMS responding LCDs-A review," Proc. Japan Display'92 (1992) pp. 77-80.

S. Gopalan, T. N. Ruckmongathan, "Modified discrete cosine transform for addressing liquid crystal displays," Soc. Inf. Symp. Dig. Tech. Papers, 2008 pp. 1877-1880.

N. Ahmed, K. R. Rao, Orthogonal Transforms for Digital Signal Processing (Springer-Verlag, 1975) pp. 169-171.

Igarashi, Youichi, T. Yamamoto, Y. Tanaka, J. Someya, Y. Nakakura, M. Yamakawa, Y. Nishida, T. Kurita, "Summary of moving picture response time (MPRT) and features," SID Symp. Dig. Tech. Papers, 2004 pp. 1262-1265.

T. N. Ruckmongathan, "A generalized addressing technique for RMS responding matrix LCDs," Proc. Int. Display Res. Conf. (1988) pp. 80-85.

K. Seikya, H. Nakamura, "Overdrive method for TN-mode LCDs-recursive systems with capacitive predictions," SID. Int. Symp. Dig. Tech. Papers, 2001 pp. 114-117.

N. A. Lawrence, T. D. Wilkinson, W. A. Crossland, "Combined image decompression and display driving using wavelets based multiple line addressing," SID Int. Symp. Dig. Papers, 2001 pp. 98-101.

T. J. Scheffer, B. Clifton, "Active addressing method for high-contrast video-rate STN displays," SID Dig. Tech. Papers, 1992 pp. 228-231.

T. N. Ruckmongathan, P. N. Rao, A. Prasad, "Wavelets for displaying gray shades in LCDs," SID Int. Symp., Dig. Tech. Papers, 2005 pp. 168-171.

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