申请人:Chisso Corporation
公开号:US05382688A1
公开(公告)日:1995-01-17
The present invention is to provide diamino compounds useful to polyamide 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 equipping the liquid crystal alignment layers. The Diamino compounds are represented by the general formula (1): ##STR1## 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 a part or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.
本发明提供了一种对聚酰胺原料有用的二氨基化合物,用于生产具有优异电压保持比率的液晶对准层,而不会出现图像粘连现象,以及生产这些化合物的方法和装备液晶对准层的液晶显示装置。该二氨基化合物由通式(1)表示:其中R表示氢或具有1至8个碳原子的烷基基团,另外,X、Y和Z分别表示氢、具有1至3个碳原子的烷基基团或氟,它们中的部分或全部可能相同或不同,并且这些取代基的位置可能是邻位或间位。