Patent ID: 7782428
Filing Date: 2010-08-24
Classification: G02F

Abstract:
1. A vertically aligned LCD using a multi-domain mode or a chiral additive, provided with a bi-axial retardation compensation film, in which a vertically aligned panel is formed by injecting liquid crystal having a negative dielectric anisotropy or a positive dielectric anisotropy into a gap between upper and lower glass substrates, and upper and lower polarizing plates are arranged above the upper and lower surfaces of the vertically aligned panel so that optical absorption axes of the polarizing plates are perpendicular to each other with the vertically aligned panel as the central figure, and a cell gap in the range of 3 μm to 8 μm is maintained, a liquid crystal cell is prepared by arranging the bi-axial retardation compensation film between the vertically aligned panel and the upper or lower polarizing plate in which the relationship of the in-plane refraction index n an optical axis of the bi-axial retardation compensation film is arranged to be perpendicular to an absorption axis of an adjacent polarizing plate, and the bi-axial retardation compensation film has a reversed wavelength dispersion in which a in-plane retardation is increased in proportion to the increase of a wavelength in the range of visible rays, and has a normal wavelength dispersion in which an absolute value of the thickness retardation is decreased in proportion to the increase of a wavelength in the range of visible rays, and has an in-plane retardation (R wherein a wavelength dispersion (R wherein a wavelength dispersion (R wherein a liquid crystalline layer of the VA-panel has a retardation in the range of 80 nm to 400 nm at a wavelength of 550 nm.