Patent ID: 9116392
Filing Date: 2015-08-25
Classification: G02F

Abstract:
1. A liquid crystal display comprising: a liquid crystal panel comprising a first substrate having a first alignment axis, a second substrate facing the first substrate and having a second alignment axis intersecting the first alignment axis, and a plurality of liquid crystal molecules twisted from the first alignment axis to the second alignment axis; a first biaxial retardation compensation film contacting the first substrate; and a second biaxial retardation compensation film facing the first biaxial retardation compensation film with the liquid crystal panel arranged therebetween, wherein each of the first biaxial retardation compensation film and the second biaxial retardation compensation film has a phase difference Re in a plane direction defined by Equation 1 below and a phase difference Rth in a thickness direction defined by Equation 2 below, and the phase difference Re and the phase difference Rth satisfy Equation 3 and Equation 4 below, respectively, wherein: nx is a refractive index on a plane in a direction indicated by first axes of the first and second biaxial retardation compensation films, ny is a refractive index on a plane in a direction indicated by second axes substantially orthogonal to the first axes, nz is a refractive index in a direction normal to a plane defined by the first and second axes, and d is a thickness of each of the first and second biaxial retardation compensation films in the normal direction; and the first axis of the first biaxial retardation compensation film is orthogonal to the first alignment axis and the first axis of the second biaxial retardation compensation film is orthogonal to the second alignment axis.