Patent ID: 6950161

Claim:
A liquid crystal display device having a first substrate, a second substrate, and a liquid crystal layer between the first substrate and the second substrate, the liquid crystal display device comprising: a first electrode provided on the first substrate; and a second substrate provided on the second substrate so as to face the first electrode via the liquid crystal layer, the liquid crystal layer being vertically aligned when no voltage is applied across the first electrode and the second electrode, and the liquid crystal layer having a twisted structure and being aligned parallel to the substrates when a voltage is applied across the first electrode and the second electrode, said liquid crystal display device having a defined value for d/p between 0.13 and 0.38, and said liquid crystal display device having a defined value for d·Δn/λ between 0.61 and 0.82, where d/p is a ratio of a thickness d of the liquid crystal layer to a natural twist pitch p of a liquid crystal, a maximum applied effective voltage across the first electrode and the second electrode is 10V, and Δn is a refractive anisotropy of the liquid crystal layer.