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|1. (WO2018198425) HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL FILM AND METHOD FOR MANUFACTURING SAME|
|Applicants:||NITTO DENKO CORPORATION
|Title:||HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL FILM AND METHOD FOR MANUFACTURING SAME|
Provided is a homeotropic alignment liquid crystal film produced in the following manner: a liquid crystalline composition containing a side chain type liquid crystal polymer and a photopolymerizable liquid crystal monomer is applied onto a film substrate with no vertical alignment film provided thereon; the liquid crystal polymer and the liquid crystal monomer are homeotropically aligned in a liquid crystal state; the liquid crystal monomer is polymerized or crosslinked by light irradiation to obtain a homeotropic alignment liquid crystal film. The side chain type liquid crystal polymer has a monomer unit containing a liquid crystalline fragment side chain, and a monomer unit containing a non-liquid crystalline fragment side chain. It is preferable that a stretched film is used as the film substrate, and that the heating temperature for aligning a liquid crystal compound is within a prescribed range.