Liquid crystal device having alignment film with particular surf

Details Liquid crystal device having alignment film with particular surf Liquid crystal device having alignment film with particular surf

1994-01-12

1995-03-21

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 75, 359100, G02F 1133, G02F 11337

Patent

active

054001595

ABSTRACT:
A liquid crystal device is constituted by a pair of substrates, and a liquid crystal disposed between the substrates. At least one of the substrates has thereon an alignment film. The alignment film is characterized in that (1) it has a surface energy of at most 35 dyne/cm before rubbing and has been rubbed to have a refractive index anisotropy of at least 0.02, or (2) it has been rubbed to have a surface energy difference .DELTA.E of at least 9 dyne/cm and a difference .DELTA..delta. in dispersion term of the surface energy of at least 6 dyne/cm between before and after the rubbing. The alignment film is effective in providing a high contrast and decreasing a delay in optical response causing after-image.

REFERENCES:
patent: 4105298 (1978-08-01), Levine et al.
patent: 4367924 (1983-01-01), Clark et al.
patent: 4561726 (1985-12-01), Goodby et al.
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4939003 (1990-07-01), Aoki et al.
patent: 5013137 (1991-05-01), Tsuboyama et al.
patent: 5129727 (1992-07-01), Hanyu et al.
patent: 5153755 (1992-10-01), Higa
patent: 5186985 (1993-02-01), Estes et al.
patent: 5188870 (1993-02-01), Brosig
patent: 5189536 (1993-02-01), Hanyu et al.
patent: 5192596 (1993-03-01), Hanyu et al.
Williams et al "Alignment of Chiral Smectic Liquid Crystals" J. Phys. D: Applied Phys. 19 (1986)-pp. L37-L41.

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