Liquid crystal mixture

Details Liquid crystal mixture Liquid crystal mixture

1987-05-20

1988-11-08

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 2522995, 25229963, 25229964, 25229965, 25229966, 25229967, 350346, G02F 113, C09K 1934, C09K 1930, C09K 1912

Patent

active

047832800

ABSTRACT:
There is described a liquid crystalline mixture for electro-optical devices which are operated according to the two-frequency matrix addressing procedure. The mixture consists of three components A, B and C, each of which contains one or more compounds. Component A has a viscosity of at most about 40 cp, a clearing point of at least about 40.degree. C. and a dielectric anisotropy between about -2 and about +1. Component B has a dielectric anisotropy below about -2 both above and below the cross-over frequency of the total mixture and component C has a dielectric anisotropy above about +10, a clearing point of at least about 100.degree. C. and there is a cross-over frequency in the total mixture of at most about 15 kHz at 20.degree. C. Novel compounds for such mixtures and their manufacture and use are also described. The novel mixtures make possible especially high multiplex rates and short response times.

REFERENCES:
patent: 3915883 (1975-10-01), Van Meter et al.
patent: 4009934 (1977-03-01), Goodwin et al.
patent: 4227778 (1980-10-01), Raynes
patent: 4279770 (1981-07-01), Inukai et al.
patent: 4279771 (1981-07-01), Shionozaki et al.
patent: 4287085 (1981-09-01), Takei et al.
patent: 4341652 (1982-07-01), Takei et al.
patent: 4419262 (1983-12-01), Petrzilka
patent: 4439015 (1984-03-01), Rich et al.
patent: 4452718 (1984-06-01), Schadt et al.
patent: 4460770 (1984-07-01), Petrzilka et al.
patent: 4559161 (1985-12-01), Takei et al.
patent: 4566759 (1986-01-01), McDonnell et al.
Goodwin et al., Research Disclosure No. 131, pp. 28-31 (Mar. 1975).
Freiser et al, IBM Technical Disclosure Bulletin, vol. 17, No. 5, pp. 1498-1501 (Oct. 1974).
Hosokawa et al., SID Digest 1979, pp. 116-117.
Derwent No. 14413 E108-Japanese 57-5783 published Jan. 12, 1982.

Affiliated with

Also associated with

Rating

Liquid crystal mixture 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 mixture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal mixture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-462897