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Matrix display systems and methods of operating such systems

  • US 5,912,651 A
  • Filed: 01/06/1997
  • Issued: 06/15/1999
  • Est. Priority Date: 06/30/1993
  • Status: Expired due to Term
First Claim
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1. A video display system comprising a matrix display panel having a row and column array of picture elements for modulating light which are drivable to at least substantially transmissive and substantially non-transmissive states, a light source for illuminating the display panel to produce a display output, and drive means for driving the picture elements according to a video signal, the video signal divided into successive fields of display information, and each field divided into successive lines of display information, the video signal also having a given field and line rate applied to the drive means, the drive means being operable to address the rows of picture elements sequentially at least once during successive display address periods such that the display information of each successive display field of the applied video signal is written into the display panel in a display information address period, characterised in that the display information of each display field of the applied video signal is written into the display panel in substantially less than a display information address period, and during the remainder of the display address period substantially no display output is produced, whereby dark intervals are introduced between the presentation to a viewer of successive display fields of the panel, which leads to an improvement in the perceived sharpness of moving images in the display.

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