Double-cell Super Twisted Nematic

Double-cell Super Twisted Nematic displays enhance the STN LCD by placing cells on top of each other. This offers a true black and white display instead of the near-black and near-white levels typically found in standard twisted nematic displays. Such true black and white is possible with a double cell structure as the second cell, whose director points in the opposite direction, exactly cancels out the interference introduced by the first cell.

Double-cell Super Twisted Nematic displays also offer slightly improved contrast.

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Last updated 30th January 2008, 14:39 GMT