申请人:Secretary of State for Defence
in Her Britannic Majesty's Gov.
of the United Kingdom of
Great Britain and Northern Ireland
公开号:EP0049035A1
公开(公告)日:1982-04-07
A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one compound having a formula:
wherein:
R represents a group selected from optionally substituted alkyl and optionally substitutedomonocyclic aryl;
Q represents a group selected from halo, OH, -NO2, alkyl, aryl and -NR1R2, wherein each of R, and R2 independently represents a group selected from H, alkyl and aryl;
x represents an integer from 1 to 4; and
y represents an integer from 0 to 4;
x + y being in the inclusive range 2 to 4; provided that when x + y = 2, x = 1 and y = 1.
一种适用于客主液晶器件的材料包括液晶材料和褶染染料的溶液,其中褶染染料包括至少一种具有以下式子的化合物:
其中
R 代表选自任选取代的烷基和任选取代的单环芳基的基团;
Q代表选自卤、OH、-NO2、烷基、芳基和-NR1R2的基团,其中R和R2各自独立地代表选自H、烷基和芳基的基团;
x 代表 1 至 4 的整数;和
y 代表 0 至 4 的整数;
x + y 在 2 至 4 的包含范围内;但当 x + y = 2 时,x = 1,y = 1。