Patent ID: 8059240
Filing Date: 2011-11-15
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: a liquid crystal cell comprising a pair of substrates disposed facing each other, at least one of said pair of substrates having an electrode thereon, and a liquid crystal layer held between said pair of substrates, comprising a nematic liquid crystal material, molecules of which being oriented nearly normal to the surfaces of said pair of substrates in a black state, a first polarizing film and a second polarizing film disposed while placing said liquid crystal cell in between; and at least two optical compensation films, each of them disposed respectively between said liquid crystal layer and each of said first and said second polarizing films, wherein, assuming thickness of said liquid crystal layer as d (nm), refractive index anisotropy of said liquid crystal layer at wavelength λ(nm) as Δn(λ), in-plane retardation of said at least two optical compensation films at wavelength λ as Re(λ), and a retardation in a thickness-direction of said at least two optical compensation films at wavelength λ as Rth(λ), relations (I) to (IV) below are satisfied at least at two different wavelengths in a wavelength range from 380 nm to 780 nm: Re (λ)/λ values of said at least two optical compensation films are from 0.06 to 0.09; and wherein said at least two optical compensation films satisfy the condition of Re(450)<Re(550), and wherein an in-plane slow axis of said optical compensation film and a transmission axis of either of said first and said second polarizing films disposed closer to said optical compensation film are substantially parallel to each other.