Jnc Corporation

Jnc Petrochemical Corporation

Kazumi Nara

Daisuke Ootsuki

Mayumi Tanabe

Junichi Inagaki

Yoshiharu Hirai

Nagahisa Miyagawa

A problem is, in a liquid crystal film in which an alignment layer and a liquid crystal composition layer having homogeneous alignment are formed on a support substrate, to improve adhesion between the alignment layer and the liquid crystal composition layer, and durability under a severe environment such as high temperature and high humidity. A solution is a non-liquid crystalline polymerizable compound having a radically polymerizable group and a cationically polymerizable group in a molecule is simultaneously used as an antistripping additive in a polymerizable liquid crystal composition layer having homogeneous alignment.

Film using polymerizable liquid crystal composition containing peeling preventive agent

To provide an optically anisotropic substance having a negative uniaxial phase difference film and a positive uniaxial phase difference film, and excellent heat resistance and sputtering resistance. The positive uniaxial phase difference film is formed in combination with a bifunctional polymerizable liquid crystal compound, the negative uniaxial phase difference film is formed in combination of the bifunctional polymerizable liquid crystal compound with an optically active compound having a polymerizable binaphthol moiety, and additional thermosetting treatment (postcure) is applied after the negative uniaxial phase difference film is photocured, and when glass transition temperature after the negative uniaxial phase difference film is cured is 85&#xb0; C. or higher and 115&#xb0; C. or lower, additional thermosetting treatment temperature is adjusted to 220&#xb0; C. or higher and 250&#xb0; C. or lower, and when the glass transition temperature is higher than 115&#xb0; C., the additional thermosetting treatment temperature is adjusted to 200&#xb0; C. or higher and 250&#xb0; C. or lower.

Optically anisotropic substance and liquid crystal display

The invention is to provide a photosensitive compound suitable for a photoalignment method, a photosensitive polymer prepared from the compound, a photoaligning agent by using the compound and a liquid crystal alignment film prepared from the photoaligning agent. A photosensitive compound represented by formula (1): in formula (1), Yis a divalent group represented by formula (2-1) or (2-2); Ais 1,4-phenylene or 1,4-cyclohexylene; Zis a single bond, &#x2014;COO&#x2014; or &#x2014;OCO&#x2014;; Rand Rare each independently hydrogen, fluorine or alkyl having 1 to 5 carbons; Qis independently a single bond or alkylene having 1 to 12 carbons; and n is 0 or 1. In formulas (2-1) and (2-2), Wand Ware each independently hydrogen, alkyl having 1 to 3 carbons or alkoxy having 1 to 3 carbons.

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Ichihara, Japan

Kazumi Nara