Patent ID: 8564751

Claim:
A liquid crystal display device, comprising: a vertical alignment type liquid crystal layer; a first substrate and a second substrate facing each other with the liquid crystal layer interposed therebetween; a first electrode provided in the first substrate on the liquid crystal layer side and a second electrode provided in the second substrate on the liquid crystal layer side; and a first alignment film provided between the first electrode and the liquid crystal layer and a second alignment film provided between the second electrode and the liquid crystal layer; wherein: the liquid crystal display device includes a plurality of pixel areas located in a matrix; each of the plurality of pixel areas includes a first liquid crystal domain in which a tilt direction of liquid crystal molecules at the center and in the vicinity thereof in a layer plane and in a thickness direction of the liquid crystal layer when a voltage is applied between the first electrode and the second electrode is a predetermined first direction, a second liquid crystal domain in which such a tilt direction is a predetermined second direction, a third liquid crystal domain in which such a tilt direction is a predetermined third direction and a fourth liquid crystal domain in which such a tilt direction is a predetermined fourth direction; a difference between any two among the first direction, the second direction, the third direction and the fourth direction is approximately equal to an integral multiple of 90°; the first liquid crystal domain is close to at least a part of edges of the first electrode, and the at least a part includes a first edge portion, wherein an azimuthal angle component of an alignment regulation force caused by an oblique electric field generated in the vicinity of the first edge portion and an azimuthal angle component of an alignment regulation force caused by the second alignment film are opposite to each other; the second substrate includes a first rib provided in an area corresponding to the first edge portion; the first rib includes an inclining first side face, an inclining second side face located outer to the first side face, and an apex defined between the first side face and the second side face; and the first rib is located such that the apex is located outer to the first edge portion and that the first edge portion overlaps the first side face.