Liquid crystal display device

A liquid-crystal display device comprising:

• a liquid-crystal cell comprising a liquid-crystal layer that aligns vertically to the substrate thereof in a black state,
• two polarizing elements that are disposed to sandwich the liquid-crystal cell therebetween in a manner that their absorption axes are perpendicular to each other, and
• retardation films having equivalent optical anisotropy that are disposed between each of the two polarizing elements and the liquid-crystal cell,
• wherein the retardation films comprise a cellulose acylate and a liquid-crystal compound, and satisfy following formulas (I) to (VII):
• 30≦Re(550)≦80 (I)
• 70≦Rth(550)≦140 (II)
• Re(450)/Re(550)<1 (III)
• Re(650)/Re(550)>1 (IV)
• Rth(450)/Rth(550)<1 (V)
• Rth(650)/Rth(550)>1 (VI)
• 1.2≦Rth(550)/Re(550)<2.6 (VII)
• wherein Re(λ) means retardation [nm] in plane of each of the films measured at a wavelength λ [nm];
• and Rth(λ) means retardation [nm] along thickness direction of each of the films measured at a wavelength λ [nm];
• wherein the retardation films are cellulose acylate films formed of a composition comprising the cellulose acylate, the liquid-crystal compound and a plasticizer having a maximum absorption wavelength λmax of at most 250 nm.