申请人:——
公开号:US20040206933A1
公开(公告)日:2004-10-21
The use of a mesogenic compound having a terminal end chain comprising carbon, oxygen, or sulphur, which has at least one pendent C
1-4
alkyl, C
1-4
alkoxy or a cycloalkyl ring, arranged no more than 6 atoms from the end of the chain either decreasing the melting point, increasing the clearing point, increasing the speed of switching and/or increasing the tilt angle of a liquid crystal mixture. Examples of such compounds are of formula (I) where M is a mesogenic core group, and X and Y are terminal groups, provided that at least one group X or Y is a group of sub-formula (i) where Z
1
, Z
2
, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, s, q, m and n are as defined in the specification. Novel compounds of formula (I) are also described and claimed.
1
使用具有末端端基的向列相化合物,其包含碳、氧或硫,并且具有至少一个悬挂的C1-4烷基、C1-4烷氧基或环烷基,离链末端不超过6个原子,可以降低液晶混合物的熔点、提高清晰点、增加切换速度和/或增加倾斜角度。这些化合物的例子是公式(I)的化合物,其中M是向列相核心基团,X和Y是末端基团,但至少一个基团X或Y是子公式(i)的基团,其中Z1、Z2、R1、R2、R3、R4、R5、R6、R7、s、q、m和n如规范中所定义。还描述和声明了公式(I)的新化合物。