申请人:Nissan Chemical Industries, Ltd.
公开号:EP3200022A1
公开(公告)日:2017-08-02
To provide a liquid crystal display device having excellent liquid crystal vertical alignment properties, good transparency when a voltage is applied and good scattering properties when no voltage is applied, and good adhesion with the liquid crystal layer. The liquid crystal display device has a liquid crystal layer formed by irradiating and curing with ultraviolet rays a liquid crystal composition containing a liquid crystal and a polymerizable compound disposed between a pair of substrates provided with electrodes, and at least one of the substrates is provided with a liquid crystal alignment film to vertically align a liquid crystal. The liquid crystal composition contains a compound represented by the formula [1], and the liquid crystal alignment film is obtained from a liquid crystal alignment treating agent containing a polymer having a side chain structure represented by the following formula [2-1] or formula [2-2], and a side chain structure represented by the following formula [3]:
(X1: the formula [1-a] to formula [1-g], etc., X2, X3, .X4 and X6: a single bond, etc., X5 and X7: a benzene ring, etc., X8: a C1-18 alkyl group, etc.),
(XA: H, etc., XB: a benzene ring, etc., XC: a C1-18 alkyl group, etc.),
(Y1, Y2 and Y3: a single bond, etc., Y4 and Y5: a benzene ring, etc., Y6: a C1-18 alkyl group, etc.,
-Y7-Y8 [2-2]
(Y7: a single bond, Y8: a C8-22 alkyl group, etc.).
为了提供一种液晶显示装置,该装置具有优异的液晶垂直排列特性,在施加电压时具有良好的透明度,在不施加电压时具有良好的散射特性,并且与液晶层具有良好的附着力。该液晶显示装置具有一个液晶层,该液晶层是通过用紫外线照射和固化一种液晶组合物而形成的,该液晶组合物含有一种液晶和一种可聚合的化合物,该液晶组合物被放置在一对带有电极的基板之间,至少其中一个基板上带有一种液晶排列膜,用于垂直排列液晶。液晶组合物含有由式[1]表示的化合物,而液晶配向膜是从液晶配向处理剂中获得的,该处理剂含有具有由下式[2-1]或式[2-2]表示的侧链结构和由下式[3]表示的侧链结构的聚合物:
(X1:式[1-a]至式[1-g]等,X2、X3、.X4 和 X6:单键等,X5 和 X7:苯环等,X8:C1-18 烷基等)、
(XA:H 等,XB:苯环等,XC:C1-18 烷基等)、
(Y1、Y2 和 Y3:单键等;Y4 和 Y5:苯环等;Y6:C1-18 烷基等)、
-Y7-Y8[2-2]
(Y7:单键,Y8:C8-22 烷基等)。