| 摘要 |
<p>The present invention provides an LCD device that has a higher contrast ratio in a wide viewing angle and that can be easily produced at low cost. The present invention is a liquid crystal display device, including in the following order:
a first polarizer (111);
a first birefringent layer (151);
a first quarter-wave plate (181);
a liquid crystal cell (131);
a second quarter-wave plate (182);
a second birefringent layer (161); and
a second polarizer (112) having an absorption axis orthogonal to an absorption axis of the first polarizer,
wherein the first birefringent layer satisfies Nz > 0.9 and has an in-plane slow axis orthogonal to the absorption axis of the first polarizer;
the first quarter-wave plate has an in-plane slow axis forming an angle of about 45° with the absorption axis of the first polarizer;
the liquid crystal cell displays a black screen by aligning liquid crystal molecules in the liquid crystal cell vertically to a substrate surface;
the second quarter-wave plate has an in-plane slow axis orthogonal to the in-plane slow axis of the first quarter-wave plate; and
the second birefringent layer satisfies Nz < 0.1 and has an in-plane slow axis parallel to the absorption axis of the second polarizer.
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