Alignment technique for liquid crystal devices

Details Alignment technique for liquid crystal devices Alignment technique for liquid crystal devices

G - Physics

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G02F 1/133 (2006.01) G02F 1/1337 (2006.01) G02F 1/141 (2006.01)

Patent

CA 1237509

- 17 - Abstract of the Disclosure In a liquid crystal device one interior surface of the cell is coated with a polymer (e.g., a crystalline polymer such as PET) which, when rubbed, produces alignment of the liquid crystal molecules, and the opposite interior surface is coated with a material (e.g., an amorphous polymer, such as PMMA) which, even if rubbed, does not produce such alignment. Also descried is a combination of an aligning polymer and a non-aligning, non-polymer (e.g., a silane surfactant or bare ITO). This technique is particularly useful in producing alignment of relatively thick, ferroelectric smectic liquid crystal cells.

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