Guest-host liquid crystal display device and guest-host liquid c

Details Guest-host liquid crystal display device and guest-host liquid c Guest-host liquid crystal display device and guest-host liquid c

1998-01-22

2000-03-21

Wu, Shean C.

Compositions

Liquid crystal compositions

349165, 2522991, C09K 1960, C09K 1952

Patent

active

060398930

ABSTRACT:
A guest-host liquid crystal display device comprises a pair of substrates opposing each other with a space therebetween, a guest-host liquid crystal held in the space, the guest-host liquid crystal containing a dichroic dye mixture exhibiting a black color as a whole, and electrodes provided on the substrates for applying a voltage to the guest-host liquid crystal. The dichroic dye mixture comprises a bis-azo blue dye having a thienothiazole ring represented by the following chemical formula (1) and a tris-azo bluish purple dye having a benzothiazole ring represented by the following chemical formula (2): ##STR1## wherein R.sub.1 is a hydrogen or halogen atom, C.sub.n H.sub.2n+1, COC.sub.n H.sub.2n+1, OCOC.sub.n H.sub.2n+1, COOC.sub.n H.sub.2n+1, or CH.sub.2 COOC.sub.n H.sub.2n+1, wherein n is an integer from 1 to 8; each of R.sub.2 and R.sub.3 is a hydrogen atom or C.sub.n H.sub.2n+1 ; R.sub.3 may be ##STR2## or ##STR3## and a combination of R.sub.2 and R.sub.3 may form ##STR4## wherein n is an integer from 1 to 8, and m is an integer from 1 to 5; and R.sub.4 is a hydrogen or halogen atom, or C.sub.n H.sub.2n+1, wherein n is an integer from 1 to 8.

REFERENCES:
patent: 4959172 (1990-09-01), Miura et al.
patent: 5751389 (1998-05-01), Andreatta et al.

Affiliated with

Also associated with

Rating

Guest-host liquid crystal display device and guest-host liquid c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Guest-host liquid crystal display device and guest-host liquid c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guest-host liquid crystal display device and guest-host liquid c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-727740