公开(公告)号：JPH04212933A

公开(公告)日：1992-08-04

申请号：JP755091

申请日：1991-01-25

Applicant: HOECHST AG

Inventor： HANSUURORUFU DEYUBARU ,  MURAKAMI MIKIO ,  HANSUUOTSUTOO DOROTOROFU ,  MIHIYAERU BUREKUNAA

IPC: C09K19/56 ,  C08G65/40 ,  G02F1/1337

Abstract: PURPOSE: To provide an oriented layer for a liquid crystal display and a switching device, which has high transparency, low water absorption, the uniform orientation of both a smectic liquid crystal and a nematic liquid crystal and exhibits high contrast ability. CONSTITUTION: The polyaryl ether ketone is used as the oriented layer, which has the structure unit of-O-A-O-B-.