Process for increasing pretilt angles in nematic liquid crystal

Details Process for increasing pretilt angles in nematic liquid crystal Process for increasing pretilt angles in nematic liquid crystal

1992-04-20

1992-12-15

Beck, Shrive

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 78, 427162, 427355, 427444, 428 1, G02F 11337

Patent

active

051722550

ABSTRACT:
In a process for treating an organic orientation layer on a substrate plate for a liquid crystal cell, the orientation layer for causing the orientation is rubbed in the conventional way in a specified direction. Rubbing is then performed in the opposite direction, but with a weaker rubbing pressure. Rubbing in the opposite direction with weak pressure leads to an increase of some degrees in the pretilt angle, and this is essentially independent of the material used for the orientation layer.

REFERENCES:
patent: 4207671 (1980-06-01), Gharadjedaghi et al.
Molecular Crystals and Liquid Crystals, 132, NR1/2 1986, New York, US, pp. 167-180, M. E. Becker et al. entitled: "Alignment Properties of Rubbed Polymer Surfaces".
Patent Abstracts of Japan, vol. 13, NR 261 (P-885) (3609) Jun. 16, 1989, entitled "Production of Liquid Crystal".
Proceedings of the Society of Information Display, vol. 28, NR 20 1987, Los Angeles, US, pp. 155-158, K. Yoshida et al., entitled: "Genovation of a High Pretilt Angle by Rubbing: Application to Supertwisted Nematic LCDs".
JP Patents Abstracts of Japan: 63 208825 A, P-807, Dec. 27, 1988, vol. 12, No. 499.
JP Patents Abstracts of Japan: 63 199320 A, P-802, Dec. 16, 1988, vol. 12, No. 483.
JP Patents Abstracts of Japan: 63 66534 A, P-742, Aug. 9, 1988, vol. 12, No. 290.
JP Patents Abstracts of Japan: 63 64027 A, P-741, Aug. 8, 1988, vol. 12, No. 288.
JP Patents Abstracts of Japan: 63 30827 A, P-726, Jul. 7, 1988, vol. 12, No. 238.
JP Patents Abstracts of Japan: 62 295026 A, P-711, Jun. 2, 1988, vol. 12, No. 188.
JP Patents Abstracts of Japan: 62 215925 A, P-675, Mar. 10, 1988, vol. 12, No. 76.
JP Patents Abstracts of Japan: 62 189429 A, P-663, Feb. 6, 1988, vol. 12, No. 42.
JP Patents Abstracts of Japan: 61 250616 A, P-561, Mar. 28, 1987, vol. 11, No. 100.
JP Patents Abstracts of Japan: 61 32816 A, P-473, Jul. 3, 1986, vol. 10, No. 188.
JP Patents Abstracts of Japan: 60 32024 A, P-368, Jun. 29, 1985, vol. 9, No. 156.
JP Patents Abstracts of Japan: 59 187321 A, P-338, Feb. 28, 1985, vol. 9, No. 48.

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