Patent ID: 9541810
Date: 2017-01-10
CPC Classifications: G02F

Claim:
1. A liquid crystal display device comprising: a first substrate including a gate line extending in a first direction, a source line extending in a second direction crossing the first direction, a switching element disposed in each of pixels and electrically connected to the source line, a common electrode disposed over a plurality of pixels, an insulation film disposed on the common electrode, a pixel electrode which is electrically connected to the switching element, is disposed in each of the pixels on the insulation film, and includes electrode portions which form a slit opposed to the common electrode, and a first alignment film covering the pixel electrode; a second substrate including a second alignment film which is opposed to the first alignment film; and a liquid crystal layer which is held between the first alignment film and the second ent film, and is formed of a liquid crystal material having a negative dielectric constant anisotropy; a driving circuit configured to execute driving of the plurality of pixels by column reversal in which potentials of pixels neighboring in the first direction are potentials of opposite polarities, and potentials of pixels neighboring in the second direction are potentials of the same polarity, wherein the common electrode is located between the source line and the liquid crystal layer, and is opposed to the source line, the pixel electrode and the common electrode form a fringe electric field, the electrode portions are arranged in the first direction, the electrode portions and the slit extend in the second direction, and L/S is in a range of between 0.5 and 0.9 when a width of the slit in the first direction is S and a width of the electrode portion in the first direction is L.