Patent ID: 6661488
Filing Date: 2003-12-09
Classification: G02F

Abstract:
A liquid crystal display device comprising:a liquid crystal panel in which liquid crystal having a negative dielectric constant anisotropy is sandwiched between first and second substrates, said liquid crystal is aligned in a direction vertical to said first and second substrates when no voltage is applied to said liquid crystal, and at least one of said first and second substrates includes domain regulating means for regulating said liquid crystal to be oriented in a plurality of azimuths when a voltage is applied to said liquid crystal; first and second polarizing plates placed on both sides of said liquid crystal panel; and at least one phase difference film, whose refractive indices nx and ny and refractive index nz in a thickness direction thereof have the following relation: nx, ny&gE;nz (except nx=ny=nz), said at least one phase difference film being placed in at least one of the spaces between said liquid crystal panel and one of said first and second polarizing plates or between said liquid crystal panel and the other thereof, wherein a phase lag axis of said at least one phase difference film intersects with an absorption axis of said first polarizing plate or second polarizing plate at a right angle, and each inplane optical retardation of said at least one phase difference film being less than 250 nm, and a sum of optical retardations in a thickness direction of said at least one phase difference film being less than 1.7Ã—R1c+50 nm (R1c: an optical retardation of a liquid crystal cell).