Liquid crystal element and manufacture thereof

Abstract

Disclosed is a liquid crystal element capable of reducing the threshold voltage value, temperature-dependence on light transmittance, and hysteresis phenomenon. The liquid crystal element basically includes a pair of substrates each having a liquid crystal orientation film, wherein the surface sides, on which the liquid crystal orientation films are formed, of the substrates are opposed to each other with a specific gap put therebetween and a liquid crystal is arranged in the gap. The liquid crystal orientation film includes: a SiOx obliquely vapor-deposited film (x: positive number less than 2); and a polyvinyl alcohol based thin film stacked on the obliquely vapor-deposited film to a thickness of 0.1 μm or less (the concentration of the polyvinyl alcohol based water solution is 1 wt % or less) allowed to keep irregularities of oblique pillars of the obliquely vapor-deposited film. Accordingly, it is possible to sufficiently exhibit the orientation of a liquid crystal due to the shapes of the SiOx pillars and obtain the compatibility between polyvinyl alcohol and the liquid crystal material (that is, reduction in anchoring force, and suppression in polarization and interaction between the liquid crystal and SiOx).

Dependencies are inferred from the claim text.