Smectic liquid crystal devices

Details Smectic liquid crystal devices Smectic liquid crystal devices

1988-12-01

1991-10-29

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359100, 359101, 359104, G02F 113

Patent

active

050610473

ABSTRACT:
A method, device, and material for providing a fast switching liquid crystal display employs the ferro electric effect of chiral smectic liquid crystal material. To provide a uniform appearance the liquid crystal material is arranged to have a long cholesteric pitch at a temperature close to a smectic/cholesteric phase transistion temperature. This long cholesteric pitch allows liquid crystal molecules to cool from the cholesteric to smectic phase with a uniform alignment. The smectic material is contained in a cell between walls (2, 3) bearing electrodes (5, 6) and surface treated to provide homogeneous alignment of liquid crystal material (7).

REFERENCES:
patent: 4264148 (1981-04-01), Gobl-Wunsch et al.
patent: 4689176 (1987-08-01), Inoue et al.
patent: 4838663 (1989-06-01), Lagerwall et al.
patent: 4882085 (1989-11-01), Yoshinaga et al.
Pelzl et al. "Tilt angle determination of a smectic C phase by Field-Induced Freedericksz Transition and X-ray investigations", Mol. Cryst. Liq. Cryst., vol. 53, pp. 167-180.
European Search Report.
Applied Physics Letters, vol. 47, No. 12, Dec. 15, 1985; Am. Institute of Physics, (Woodbury, N.Y. U.S.A.); pp. 1277-1279.
Electronics International, vol. 56, No. 10, May 1983, (New York U.S.A.), C. Barney: "FastLC Switch Handles Color"; pp. 52, 54.
Molecular Crystals & Liquid Crystals, vol. 110, 1984; Gordon & Breach, Science Pub., Inc.; J. W. Goodby et al. "Ferroelectric Liquid Crystals)", pp. 175-203.

Affiliated with

Also associated with

Rating

Smectic liquid crystal devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Smectic liquid crystal devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smectic liquid crystal devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1395806