Title:
LIQUID CRYSTAL ORIENTING AGENT, LIQUID CRYSTAL DISPLAY ELEMENT, AND METHOD FOR PRODUCING LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2016/125870
Kind Code:
A1
Abstract:
Provided are a liquid crystal orienting agent having good residual DC characteristics, a liquid crystal oriented film, a liquid crystal display element, and a method for manufacturing a liquid crystal display element. The liquid crystal orienting agent is intended for use in a liquid crystal display element obtained by photoirradiation of a liquid crystal cell in which a pair of substrates having conductive films that are coated with a liquid crystal orienting agent and heated to form a coating film are arranged in opposition with the coating films facing across an intervening liquid crystal layer. The liquid crystal orienting agent contains the following component (A), component (B), and an organic solvent. Component (A): at least one polymer selected from the group consisting of polyimide precursors having side chains for causing liquid crystals to orient vertically, and polyimides that are imides of such polyimide precursors. Component (B): at least one polymer selected from the group consisting of polyimide precursors that are reaction products of a diamine component and a tetracarboxylic dianhydride component that contains a tetracarboxylic dianhydride selected from the following equations (1) and (1'), and polyimides that are imides of such polyimide precursors. When component (B) has side chains for causing liquid crystals to orient vertically, the component may be a polymer identical to that of component (A). (j and k are 0 or 1, and x and y are single bonds, carbonyl groups, or the like.)
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Inventors:
WAKABAYASHI SATOKO (JP)
GOTO KOHEI (JP)
HIMORI SHOGO (JP)
GOTO KOHEI (JP)
HIMORI SHOGO (JP)
Application Number:
PCT/JP2016/053413
Publication Date:
August 11, 2016
Filing Date:
February 04, 2016
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
International Classes:
G02F1/1337; C08G73/10; G02F1/13
Domestic Patent References:
| WO2011055643A1 | 2011-05-12 | |||
| WO2012057337A1 | 2012-05-03 |
Foreign References:
| JP2015026052A | 2015-02-05 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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