Truly bistable twisted nematic liquid crystal display using photoalignment technology

Yeung, Fion S. Y.; Kwok, H. S.
November 2003
Applied Physics Letters;11/24/2003, Vol. 83 Issue 21, p4291
Academic Journal
Truly bistable twisted nematic liquid crystal display has been fabricated using photoalignment. This display can be switched between the -22.5° and 157.5° twist states by breaking the anchoring condition on one of the substrates. The application of a photoalignable polymer SDA-1 was able to achieve the weak anchoring energy necessary for switching. Both theoretical and experimental results show that this mode has excellent contrast ratio and wide viewing angles. © 2003 American Institute of Physics.


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