Title:
LIQUID CRYSTAL ORIENTATION AGENT, LIQUID CRYSTAL ORIENTATION MEMBRANE, AND LIQUID CRYSTAL DISPLAY ELEMENT USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/148596
Kind Code:
A1
Abstract:
Provided are a liquid crystal orientation agent which maintains an afterimage erasure time and an orientation restricting force, yet has high transparency and is less likely to cause charge storage due to asymmetrization of alternating current drive, and which contains respective polyamic acid containing a unit structure represented by one of formulas (I) and (II), and a liquid crystal orientation membrane and a liquid crystal display element using the membrane. (I) (II) (In the formulas, R1 represents a tetravalent organic group constituting aromatic-series tetracarboxylic acid; R2 represents a tetravalent organic group constituting tetracarboxylic acid; and R3 and R4 respectively represent a specific divalent organic group constituting diamine.)
Inventors:
SATO NATSUKI (JP)
NAKAHARA SYOICHIRO (JP)
ISHII HIDENORI (JP)
SUZUKI KANAKO (JP)
MIYAMA YUKIHIRO (JP)
NAKAHARA SYOICHIRO (JP)
ISHII HIDENORI (JP)
SUZUKI KANAKO (JP)
MIYAMA YUKIHIRO (JP)
Application Number:
PCT/JP2014/057702
Publication Date:
September 25, 2014
Filing Date:
March 20, 2014
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
International Classes:
G02F1/1337; C08G73/06
Domestic Patent References:
| WO2013008822A1 | 2013-01-17 | |||
| WO2010074269A1 | 2010-07-01 | |||
| WO2004099289A1 | 2004-11-18 | |||
| WO2004053583A1 | 2004-06-24 |
Foreign References:
| JPH11264984A | 1999-09-28 | |||
| JP2010250307A | 2010-11-04 |
Attorney, Agent or Firm:
TSUKUNI & ASSOCIATES et al. (JP)
Patent business corporation Tsukuni (JP)
Patent business corporation Tsukuni (JP)
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