| CPC G02F 1/1323 (2013.01) [G02F 1/133531 (2021.01); G02F 1/134363 (2013.01); G02F 1/134372 (2021.01)] | 4 Claims |
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1. A display device comprising, sequentially from a back surface side toward a viewing surface side:
a backlight;
a first polarizing plate with a first absorption axis;
a first liquid crystal panel;
a second polarizing plate with a second absorption axis;
a display panel;
a third polarizing plate with a third absorption axis;
a second liquid crystal panel; and
a fourth polarizing plate with a fourth absorption axis,
the first absorption axis being parallel to the second absorption axis,
the third absorption axis being parallel to the fourth absorption axis,
the second absorption axis being perpendicular to the third absorption axis,
the first liquid crystal panel including, sequentially from the back surface side toward the viewing surface side, a first substrate, a first liquid crystal layer containing first liquid crystal molecules, and a second substrate,
the second liquid crystal panel including, sequentially from the back surface side toward the viewing surface side, a third substrate, a second liquid crystal layer containing second liquid crystal molecules, and a fourth substrate,
the display device satisfying the following Formula (1), at least one of the following Formula (A6-1), Formula (A6-3), and Formula (A6-4), and at least one of the following Formula (B2-1) to Formula (B2-4), as well as the following Formula (A7) and Formula (B3):
|φ3−φ1|≥50° formula (1)
5°≤θ(φ1,P2)≤20° formula (A6-1)
5°≤θ(φ2,P2)≤20° formula (A6-3)
65°≤θ(φ2,P2)≤80° Formula (A6-4)
5°≤|φ1−φ2|≤20° formula (A7)
0°≤θ(φ3,P2)≤3° Formula (B2-1)
87°≤θ(φ3,P2)≤90° formula (B2-2)
0°≤θ(φ4,P2)≤3° Formula (B2-3)
87°≤θ(φ4,P2)≤90° formula (B2-4)
0°<|φ3−φ4|≤5° formula (B3)
wherein φ1 represents an azimuthal angle of a director of the first liquid crystal molecules near the first substrate with no voltage applied to the first liquid crystal layer,
φ3 represents an azimuthal angle of a director of the second liquid crystal molecules near the third substrate with no voltage applied to the second liquid crystal layer,
φ2 represents an azimuthal angle of a director of the first liquid crystal molecules near the second substrate with no voltage applied to the first liquid crystal layer,
φ4 represents an azimuthal angle of a director of the second liquid crystal molecules near the fourth substrate with no voltage applied to the second liquid crystal layer,
θ(φ1, P2) represents an angle formed by the director of the first liquid crystal molecules near the first substrate and the second absorption axis in a plan view,
θ(φ2, P2) represents an angle formed by the director of the first liquid crystal molecules near the second substrate and the second absorption axis in the plan view,
θ(φ3, P2) represents an angle formed by the director of the second liquid crystal molecules near the third substrate and the second absorption axis in the plan view, and
θ(φ4, P2) represents an angle formed by the director of the second liquid crystal molecules near the fourth substrate and the second absorption axis in the plan view.
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