Patent ID: 9411196
Filing Date: 2016-08-09
CPC Classification: G02F

Claim Text:
1. A liquid crystal display device comprising a plurality of pixel regions which are arranged to form a matrix pattern, the device further comprising: a vertical alignment liquid crystal layer; first and second substrates which face each other with the liquid crystal layer interposed between themselves; a pixel electrode which is arranged in each of the pixel regions on one side of the first substrate that fronts on the liquid crystal layer; a counter electrode which is arranged on one side of the second substrate that fronts on the liquid crystal layer and which faces the pixel electrodes; and first and second alignment films which are arranged between the pixel electrodes and the liquid crystal layer and between the counter electrode and the liquid crystal layer, respectively, wherein each of the plurality of pixel regions includes first, second, third and fourth liquid crystal domains in which liquid crystal molecules are tilted in first, second, third and fourth predetermined directions, respectively, around the center of a plane, and approximately at the middle of the thickness, of the liquid crystal layer in response to a voltage applied between the pixel electrode and the counter electrode, the first, second, third and fourth directions being four directions that are defined so that an angle formed between any two of the four directions is approximately equal to an integral multiple of 90 degrees, the first liquid crystal domain is located close to at least a part of edges of the pixel electrode, the part including a first edge portion in which an azimuthal direction that is perpendicular to the part and that points toward the inside of the pixel electrode defines an angle greater than 90 degrees with respect to the first direction, and the first substrate includes a first rib which is arranged in a region corresponding to the first edge portion and under the pixel electrode.