Original reference to liquid crystal alignment techniques, covering their basic advantages, limitations, and applications Photoalignment and its Applications in Liquid Crystal Displays and Photonics Devices is an authoritative reference on the current state of the art regarding the physical origin of the photoaligning technique, covering its basic advantages and limitations as well as its applications, including displays, optical waveguides, optical polarizers and retarders, etc. The book also presents a comprehensive review of the recent results in applications of photoaligning and photo-patterning technology in liquid crystal display and photonics devices, featuring Pancharatnam-Berry phase optical elements based on photoalignment, polarization gratings, PB lens, Q-plates, smart antennas, smart windows based on photoalignment, alignment of quantum rod, bistable, and ferroelectric displays and microdisplays based on photoalignment, optically rewritable E-paper displays, and fiber optics. Photoalignment and its Applications in Liquid Crystal Displays and Photonics Devices contains further specific information on: Mechanisms of LC photoalignment, covering cis-trans isomerization, command surface, and cis-trans isomerization in azo-dye side chain polymers and azo-dye in polymer matrix Photo-induced molecular rotation, covering force model, rotational diffusion model with intermolecular interaction, and dichroic absorption spectra Lc surface interaction in photoaligned cell, covering generation of large pretilt angles, anchoring energy in photoalignment materials, and stability of photoaligning materials. Photoalignment of liquid crystal modes, covering twisted LC photoalignment, photoalignment with asymmetric surface anchoring, and LC photoalignment on plastic substrates Photoalignment and its Applications in Liquid Crystal Displays and Photonics Devices is an essential resource for a wide range of engineers, scientists, and managers who wish to understand the physical origin of the photoaligning technique. It is also valuable for students specialized in condensed matter physics and liquid crystal devices.