Diamino compounds and their production method and liquid crystal alignment layers using the compounds
申请人:CHISSO CORPORATION
公开号:EP0601813A1
公开(公告)日:1994-06-15
The present invention provides diamino compounds useful as polymerisation raw materials for production of liquid crystal alignment layers having excellent voltage holding ratios without development of image-sticking phenomena, a method for producing the compounds and liquid crystal display devices having the liquid crystal alignment layers.
The diamino compounds are represented by the general formula (1):
wherein R indicates hydrogen or an alkyl group having 1 to 8 carbon atoms, further, X, Y and Z indicate hydrogen, an alkyl group having 1 to 3 carbon atoms or fluorine, respectively, and some or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.
本发明提供了可用作聚合原料的二氨基化合物,用于生产具有优异的电压保持比且不会产生图像粘连现象的液晶配向层,还提供了生产该化合物的方法以及具有该液晶配向层的液晶显示设备。
二氨基化合物用通式(1)表示:
其中,R 表示氢或具有 1 至 8 个碳原子的烷基,此外,X、Y 和 Z 分别表示氢、具有 1 至 3 个碳原子的烷基或氟,它们中的部分或全部可以相同或不同,这些取代基的位置可以是正位或偏位。