METHOD FOR MANUFACTURING LIQUID CRYSTAL ALIGNMENT FILM LIQUID CRYSTAL ALIGNMENT FILM LIQUID CRYSTAL DISPLAY ELEMENT POLYMER AND LIQUID CRYSTAL ALIGNING AGENT

摘要

The manufacturing method of a highly efficient liquid crystal aligning film using light, the provision of a liquid crystal aligning film, and a liquid crystal display element. Polysiloxane and the monomer which has a liquid crystalline and photosensitive group and a radically polymerizable group are polymerized, a polymer is obtained, and a liquid crystal aligning agent is prepared. After obtaining the side chain type polymer film 1 from this liquid crystal aligning agent, polarizing ultraviolet-ray is irradiated, an alignment process is performed, and it heats then, and the side chain 2 of the side chain type polymer film 1 is reoriented. Subsequently, heating is carried out at a higher temperature, the reorientation state is fixed, and a liquid crystal alignment film is produced. The heating temperature for the reorientation is, for example, from 200 ° C. or lower to a temperature 10 ° C. higher than the lower limit of the temperature range in which the side chain type polymer membrane 1 expresses liquid crystallinity, and to 10 ° C. lower than the upper limit. do. A liquid crystal display element is manufactured using the obtained liquid crystal aligning film.