Liquid crystal display apparatus exhibiting cholesteric phase

Details Liquid crystal display apparatus exhibiting cholesteric phase Liquid crystal display apparatus exhibiting cholesteric phase

2005-05-17

2005-05-17

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S113000

Reexamination Certificate

active

06894733

ABSTRACT:
A liquid crystal display apparatus which has: a liquid crystal display which has chiral nematic liquid crystal between a pair of substrates with electrodes thereon and which makes a display by use of selective reflection of the liquid crystal; and a driving circuit for driving the liquid crystal by applying voltages to the electrodes. When an electric field of a specified strength is applied to the chiral nematic liquid crystal, the liquid crystal changes the direction of the helical axis without untwisting. By using this characteristic, the direction of the helical axis of the liquid crystal is changed by changing the direction of the electric field applied thereto, and thereby, the liquid crystal is set to a planar state or a focal-conic state. In this way, writing on the liquid crystal is carried out.

REFERENCES:
patent: 3914019 (1975-10-01), Byatt
patent: 4617646 (1986-10-01), Yang
patent: 4917475 (1990-04-01), Meyer et al.
patent: 5200845 (1993-04-01), Crooker et al.
patent: 5274484 (1993-12-01), Mochizuki et al.
patent: 5831707 (1998-11-01), Ota et al.
patent: 5956113 (1999-09-01), Crawford
patent: 6055028 (2000-04-01), Nishi et al.
patent: 2314423 (1987-12-01), None
patent: 2 314 423 (1997-12-01), None
patent: 2001-100256 (2001-04-01), None
K. Hashimoto, M. Okada, K. Nishiguchi, N. Masazumi, E. Yamakawa, and T. Taniguchi, “31:1, Invited Paper, Reflective Color Display Using Cholesteric Liquid Crystals”, SID International Symposium Digest of Technical Paper, vol. 29, 1998, pp. 897-900.

Affiliated with

Also associated with

Rating

Liquid crystal display apparatus exhibiting cholesteric phase does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal display apparatus exhibiting cholesteric phase, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display apparatus exhibiting cholesteric phase will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3405101