Liquid crystal display unit with a diameter of the liquid crystal droplets being greater than a space between the pair of substrates and method for its production

摘要

A liquid crystal cell filled with a polymer-dispersed liquid crystal layer 15 comprising liquid crystal droplets 151 dispersed in a polymer 152 between a first glass base plate 11 with a first transparent electrode 12 and a second glass base plate 13 with a second transparent electrode 14, is placed between crossed Nicols formed by a first polarizer 16 and a second polarizer 17, with a backlight 18 situated on the outer side thereof, the diameter of the liquid crystal droplets 151 is between 3 mu m and 100 mu m, and the liquid crystal molecules in the liquid crystal droplets 151 are twisted to between 30 DEG and 180 DEG . The liquid crystals used have a dielectric anisotropy DELTA epsilon which is negative when the frequency of the electric field is high and positive when the frequency is low, and by adjusting the dielectric anisotropy DELTA epsilon via the frequency of the electric field it is possible to form liquid crystal droplets of a desired diameter.