公开(公告)号：JP2002303870A

公开(公告)日：2002-10-18

申请号：JP2001228108

申请日：2001-07-27

Applicant: JSR CORP

Inventor： AKIIKE TOSHIYUKI ,  KOO MASAKI ,  YAMAMOTO KEIICHI

IPC: G02F1/1337 ,  C08G73/10

Abstract: PROBLEM TO BE SOLVED: To provide a vertical liquid crystal alignment layer excellent in vertical liquid crystal alignability and voltage holding characteristics. SOLUTION: The vertical alignment type liquid crystal alignment layer can be obtained by irradiating a thin film having

公开(公告)号：JPH10338880A

公开(公告)日：1998-12-22

申请号：JP16654497

申请日：1997-06-09

Applicant: JSR CORP

Inventor： YAMAMOTO KEIICHI ,  MISHIMA YUKIE ,  KURIYAMA KEISUKE ,  RYUTSU NAOKI ,  KIMURA MASAYUKI

IPC: C09K19/56 ,  C08K5/15 ,  C08K5/1515 ,  C08L79/08

Abstract: PROBLEM TO BE SOLVED: To obtain a liq. crystal aligning agent which can produce a liq. crystal display element exhibiting a high voltage retention and a low residual d.c. voltage by incorporating a polyamic acid and/or its imidized polymer, an epoxy compd., and a curative for the epoxy compd. into the same. SOLUTION: This liq. crystal aligning agent is obtd. by incorporating, into the same, 100 pts.wt. at least either a polyamic acid obtd. by the ring-opening addition reaction of a tetracarboxylic dianhydride and a diamine compd. or a polymer having an imide structure and formed by the cyclization by dehydration of a polyamic acid, 10-90 pts.wt. epoxy compd. having at least two glycidyl groups, and an epoxy curative (e.g. a diamine compd., an acid anhydride, a boron complex, an imidazole compd., a hydrazide compd., or dicyandiamide) in an amt. of 0.01-1 mol based on 1 mol of the epoxy group in the epoxy compd.