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AssigneeCanon Kabushiki Kaisha
InventorsKenji Onuma, Mayumi Yoshioka, Yukio Hanyu, Yasuto Kodera, Takatsugu Wada
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A liquid crystal device, particularly a ferroelectric liquid crystal device, is constituted by disposing a liquid crystal disposed between a pair of rubbing-treated substrates. The uniaxial alignment control force exerted by rubbing is gradually weakened as the rubbing treatment is successively applied to a large number of substrates. This is compensated by varying a rubbing condition, such as a relative moving speed, a rotational speed, or a pressing depth against the substrate of a rubbing roller. Alternatively, such a change in uniaxial alignment control force with time may be utilized for compensating for a difference in uniaxial alignment control force attributable to a difference in stripe electrode extension relative to the rubbing direction.
An aligning treatment method for a liquid crystal device including a liquid crystal between a pair of substrates, comprising successively rubbing a plurality of substrates with a rubbing roller while varying a feeding speed of the rubbing roller with time, wherein the feeding speed of the rubbing roller is varied by at least 0.5% per substrate.
An aligning treatment method for a liquid crystal device including a liquid crystal between a pair of substrates, comprising successively rubbing a plurality of substrates with a rubbing roller while varying a feeding speed of the rubbing roller with time, wherein the feeding speed of the rubbing roller is varied by at least 1% per substrate.
An alignment treatment method for a liquid crystal device including a pair of substrates each provided with stripe electrodes and a liquid crystal disposed between the substrates;
An aligning treatment method for a liquid crystal device including a pair of substrates each provided with stripe electrodes and a liquid crystal disposed between the substrates;
An aligning treatment method for a liquid crystal device including a pair of substrates each provided with stripe electrodes and a liquid crystal disposed between the substrates;
Dependencies are inferred from the claim text.