Polymer dispersed liquid crystal with polymer glass transition above 50.degree. C. and low isotropic transition shift

A liquid crystal display device comprising:

• a pair of electrode substrates;
• and
• a display medium of a polymer liquid crystal complex film interposed between the pair of substrates, the display medium including a polymer matrix and at least one liquid crystal region partitioned by the polymer matrix, the polymer matrix being made of a polymer resin composition, and the liquid crystal region being made of a liquid crystal composition,
• wherein a value .DELTA.T is 25.degree. C. or less, and a glass transition temperature T.sub.g of the polymer resin composition is 50.degree. C. or more, the value .DELTA.T being defined as a difference between a phase transition temperature T.sub.matrix of the display medium and a phase transition temperature T.sub.CI of the liquid crystal composition between a liquid crystal phase and an isotropic liquid phase thereof.