Patent ID: 7446838
Filing Date: 2008-11-04
Classification: G02F

Abstract:
1. An in-plane switching liquid crystal display comprising: a first polarizer plate; a second polarizer plate; and a liquid crystal cell, which is horizontally aligned and filled with liquid crystal of positive dielectric anisotropy (Δ∈>0) or negative dielectric anisotropy (Δ∈<0), an optical axis of the liquid crystal filled in the liquid crystal cell being aligned in-plane in parallel to the first and second polarizer plates, wherein an absorption axis of the first polarizer plate is perpendicular to an absorption axis of the second polarizer plate, the optical axis of the liquid crystal filled in the liquid crystal cell is parallel to the absorption axis of the first polarizer plate, a positive biaxial retardation film defined by a following Equation is aligned between the liquid crystal cell and the second polarizer plate, a slow axis of the positive biaxial retardation film is perpendicular to the absorption axis of the second polarizer plate, and an in-plane retardation value of the positive biaxial retardation film is equal to or less than 190 nm at a wavelength of 550 nm: Equation n