Slit coater method as a fabrication process for flexible type liquid crystal display (LCD) is one of a suitable technique because of its unnecessity of thermal and vacuum process. In our previous study, planar and/or vertical alignment properties for liquid crystal (LC) by means of the slit coater method, where the doped reactive mesogens was UV-polymerized and played a role of LC alignment film, were demonstrated. In this paper, a dependence of pretilt angle on the UV irradiation condition such as the irradiation energy and wavelength was investigated.
We have recently reported on a method that utilizes a slit coater as a novel liquid crystal alignment technique. We carried out this study under two ultraviolet (UV) irradiation conditions, viz., (i) UV irradiation from the side of a glass substrate (exposure type 1) and (ii) UV irradiation from the side of the air–liquid crystal interface (exposure type 2), and investigated the electro-optical characteristics and azimuthal anchoring energy of liquid crystal sample cells performed under these two UV irradiation conditions.
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