Patent ID: 8049850
Filing Date: 2011-11-01
Classification: G02B,G02F

Abstract:
1. A liquid crystal display device comprising a pair of substrates disposed to face each other, at least one of them having an electrode, and a nematic liquid crystal material interposed between the pair of substrates; and having a liquid crystal cell having a liquid crystal layer in which the liquid crystal molecules of the nematic liquid crystal material align approximately vertically to the surfaces of the pair of substrates during dark state, a first polarizing film and a second polarizing film disposed such that the liquid crystal cell is interposed between the films, an optical compensatory film disposed between the liquid crystal layer and one of the first and second polarizing films, and a cellulose acylate film disposed between the liquid crystal layer and at least one of the first and second polarizing films, wherein when the thickness of the liquid crystal layer is d (unit: nm), the refractive index anisotropy at a wavelength λ (unit: nm) is Δn wherein when the in-plane retardation of the cellulose acylate film at the wavelength λ (unit: nm) is Re  |Rth