| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal alignment layer, which highly stabilizes the molecule aligned state with light with respect to heat, light or further electric field, is formable to a large area at a uniform film thickness, does not make a production process complicated, is not restricted in utilization as an optical element and is arbitrarily controllable in an alignment direction and a process for producing the same as well as the optical element using this liquid crystal alignment layer. SOLUTION: This liquid crystal alignment layer is constituted by subjecting a resin film containing a dichromatic photoreactive component unit, more preferably a latent liquid crystal or crystal resin film to photoirradiation with linearly polarized light or irradiation with non-polarized light from a diagonal direction and further preferably subjecting this film to a heat treatment and forming a non-photoreactive liquid crystal material layer thereon. This process for producing the liquid crystal alignment layer consists in subjecting the latent liquid crystal or crystal resin film containing the dichromatic photoreactive component unit to the photoirradiation with the linearly polarized light or the irradiating with the non- polarized light from the diagonal direction, then subjecting this film to the heat treatment and forming the non-photoreactive liquid crystal material layer on this resin film. |
