公开(公告)号：JPH08334771A

公开(公告)日：1996-12-17

申请号：JP13611996

申请日：1996-05-30

Applicant: IBM

Inventor： TAKENAKA ATSUSHI ,  TAJIMA KENICHI ,  TAKANO HIDEO ,  RII KAN WAAKU

IPC: G02F1/1337

Abstract: PROBLEM TO BE SOLVED: To provide an oriented membrane forming material whose pretilt angle is sufficiently changed but the electric characteristic is hardly changed by the emission of ultraviolet ray, its manufacture, an oriented membrane formed by use of this material, its manufacture, and a liquid crystal display device using this oriented membrane which never causes deterioration of liquid crystal, seize of picture element, or flicker. SOLUTION: Two kinds of polymers separated in the membrane thickness directions in the formation of an oriented membrane 42, or a first polymer 34 forming the main layer of a lower layer in the formation of the oriented membrane 42 and a second polymer 36 for forming a surface layer thicker than the main layer on the upper layer of the main layer are mixed. The first polymer 34 has a small change in electric characteristic by ultraviolet ray emission, and the second polymer 36 has a large change in pretilt angle by ultraviolet ray emission.