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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 7, Iss. 12 — Dec. 1, 2011
  • pp: 633–635

Cross Pairing of Select and Data Voltages to Display Grayscales in Liquid Crystal Displays

Temkar N Ruckmongathan

Journal of Display Technology, Vol. 7, Issue 12, pp. 633-635 (2011)


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Abstract

Successive approximation technique (SAT) has select voltages of row waveforms paired up with data voltages of column waveforms to achieve the maximum selection ratio. Cross pairing of select and data voltages without compromising the selection ratio generates more rms voltages as compared to SAT. Grayscales can be displayed with less number of voltages in the addressing waveforms and less number of time intervals in a cycle as compared to SAT by cross pairing of select voltages with data voltages. Better brightness uniformity among pixels that are driven to same grayscale can be achieved by cross pairing because the width of the select pulses increases due to less number of time intervals in a cycle as compared to SAT. About 50% reduction in number voltages in row waveforms and column waveforms in addition to a 50% reduction in number of time intervals in a cycle can be achieved as compared to SAT by cross pairing select and data voltages.

© 2011 IEEE

Citation
Temkar N Ruckmongathan, "Cross Pairing of Select and Data Voltages to Display Grayscales in Liquid Crystal Displays," J. Display Technol. 7, 633-635 (2011)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-7-12-633

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