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Technical Journal No.4 (April 2003)
Special Papers 1 Fundamental Technologies for Liquid Crystal Displays
Patterned Photoalignment for Vertically Aligned LCDs

Paul GassHeather StevensonRichard BrayHarry Walton
Nathan SmithShinichi TerashitaMartin Tillin

Photoalignment of liquid crystals is evaluated as a method of achieving patterned alignment for vertically aligned LCDs suitable for LCTV and other applications. The performance of photoalignment is demonstrated to be equivalent to rubbed alignment, with the considerable advantage of easy patterning of the alignment direction. Photoalignment is found currently to have some limitation on its long-term stability, however schemes for overcoming this limitation are discussed.

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