Patent ID: 8848148

Claim:
A liquid crystal display device comprising: a first substrate including a switching element disposed in each of pixels, a common electrode formed over a plurality of pixels, an insulation film covering the common electrode, a pixel electrode which is electrically connected to the switching element and is formed on the insulation film in each of the pixels and in which a slit facing the common electrode is formed, and a first alignment film which covers the pixel electrode and is subjected to alignment treatment in a direction crossing a major axis of the slit; a second substrate including a second alignment film which is opposed to the first alignment film and is subjected to alignment treatment in a direction which is parallel to and opposite to the direction of the alignment treatment of the first alignment film; and a liquid crystal layer which is held between the first alignment film of the first substrate and the second alignment film of the second substrate and is formed of a material having a dielectric constant anisotropy in a range of +3.3 or more to +5.3 or less at a transition temperature of 75° C.