Liquid crystal device

A liquid crystal device, comprising:

• a liquid crystal layer comprising an alignable polymer network and a liquid crystal compound orientationally ordered according to one direction in the polymer network in an initial state without an external action;
• first and second polarizing layers which are disposed on both sides of the liquid crystal layer, and of which light absorption axes form an angle within the range from 80 degrees to 100 degrees or from −10 degrees to 10 degrees,
• an initial ordering direction of the liquid crystal compound forming an angle within the range from 40 degrees to 50 degrees with the light absorption axis of the polarizing layers, and
• an alignment layer disposed adjacent to the liquid crystal layer,
• wherein the polymer network is a network of a precursor comprising at least one selected from a group consisting of a bifunctional acrylate compound, a multifunctional that is tri or more functional acrylate compound and a monofunctional acrylate compound to satisfy the Equations 1 to 3 below:
• A≥1.3×B [Equation 1]
• A≥C [Equation 2]
• A≥0.6×(B+C) [Equation 3]
• wherein the “A,” “B” and “C” are weight ratios between the bifunctional acrylate compound, the multifunctional acrylate compound and the monofunctional acrylate compound, respectively, calculated when the sum of weights of the bifunctional acrylate compound, the multifunctional and the monofunctional acrylate compound in the precursor are converted into 100.