Element division liquid crystal display device and its manufactu

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

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349124, 349129, G02F 11337

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active

057964580

ABSTRACT:
An element division liquid crystal display device with a liquid crystal inserted between first and second plates having alignment films, respectively. The alignment film of at least the first plate includes a single layer of alignment material having a plurality of first and second adjacent domains A and B and is continuously rubbed in one direction through first and second minute domains A and B. A further treatment, different from a rubbing treatment, is effected to the single alignment layer so that a pretilt angle of the liquid crystal contacting the alignment layer at one of the first and second domains is different from the pretilt angle of the liquid crystal contacting the alignment layer at the other domain. The further treatment includes one of the steps of irradiating with UV light, changing the chemical components of the material of the alignment layer, heating or changing the precuring process.

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IBM Technical Disclosure Bulletin, vol. 33, No. 1B (Jun. 1990). "Controlled Two-and Four-Domain Twisted Nematic Liquid Crystal Displays".
Kaneko et al, "Wide-Viewing-Angle Improvements for AMLCDs", SID 93 Digest, pp. 265-268 (1993).

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