High-resolution bistable nematic liquid crystal device realized on orientational surface patterns

Jong-Hyun Kim; Yoneya, Makoto; Yokoyama, Hiroshi
October 2003
Applied Physics Letters;10/27/2003, Vol. 83 Issue 17, p3602
Academic Journal
The four-fold symmetry of a checkerboard-like surface alignment consisted of square domains arrived at the macroscopic orientational bistability of nematic liquid crystals. Switching between the two orientations took place with an appropriate electric field. Here the threshold field of bistable switching decreased as temperature increased, and the light could heat only the selected region in the cell including a light-absorbing medium. Irradiating the laser concurrently with an electric field, we addressed a selected region in the alignment pattern without the disturbance of neighboring regions. Extending this process, we realized an extremely fine bistable device of nematic liquid crystal with a pixel size down to about 2 μm. © 2003 American Institute of Physics.


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