Patent ID: 7956956

Claim:
A liquid crystal display device, which comprises: a liquid crystal cell that comprises: a pair of substrates oppositely disposed with each other, wherein at least one of the pair of substrates has an electrode; and a liquid crystal layer, which is disposed between the pair of substrates, comprising a nematic liquid crystal material containing a liquid crystal molecule, wherein when the liquid crystal display device is not driven, the liquid crystal molecule of the nematic liquid crystal material is aligned in a direction approximately parallel to a surface of the substrate due to an orientation axis that a facing surface of each of the pair of substrates has, and when the liquid crystal display device is driven, the liquid crystal molecule is alignment-controlled by a longitudinal electric field generated by the electrode, and an angle between an average alignment direction in an upper interface of the liquid crystal layer and an average alignment direction in a lower interface of the liquid crystal layer is almost 0; a pair of polarizing plates disposed so as to sandwich the liquid crystal cell, wherein the polarizing plate comprises: a polarizing film; and a protective film provided on at least one side of the polarizing film; and an optically-compensatory sheet which is provided between the liquid crystal cell and at least one of the pair of polarizing plates and comprises a support and an optically anisotropic layer, wherein the optically anisotropic layer comprises a liquid crystalline compound that is alignment-controlled by an orientation axis of the optically anisotropic layer and fixed in an aligned state, and a direction of a slow axis of the support and a direction in which the liquid crystalline compound is alignment-controlled cross each other at an angle of 45°, wherein an absorption axis of the polarizing film and a left-rightward direction with respect to a screen of the liquid crystal display device are parallel or vertical to each other, wherein the alignment-controlling direction of the optically anisotropic layer and an absorption axis of the polarizing film comprised in the adjacent polarizing plate cross each other at an angle of 45°.