Patent ID: 6678026
Filing Date: 2004-01-13
Classification: G02F

Abstract:
A liquid crystal device, wherein the liquid crystal device is provided with a liquid crystal panel which comprises a pair of base plates, a liquid crystal layer which is sandwiched between these base plates, a reflective layer or a semi-transparent reflective layer which is provided on the liquid crystal layer side of one of said base plates, and a directional frontal scattering film which is provided on the side of the other one of said base plates opposite to its liquid crystal layer side; andwherein when light from a light source which is arranged on the one surface side of said directional frontal scattering film is illuminated thereupon, and the parallel transmitted light, which excludes the diffused transmitted light from the entire transmitted light which has passed through said directional frontal scattering film, is observed by a light receiving portion which is arranged on the other surface side of said directional frontal scattering film and when the angle of incidence of the incident light with respect to the normal to said directional frontal scattering film is defined as the polar angle &thgr;n, the incident light angle of the in-plane direction of said directional frontal scattering film is defined as the azimuth angle &phgr;m, the maximum transmission ratio of the parallel transmitted light is defined as Tmax (&phgr;1, &thgr;1), and the minimum transmission ratio of the parallel transmitted light is defined as Tmin (&phgr;2, &thgr;2), then said directional frontal scattering film is arranged in said liquid crystal panel so that the incident light side when the polar angle and the azimuth angle yield the minimum transmission ratio is upon the light reception side of said liquid crystal panel, and so that the incident light side when the polar angle and the azimuth angle yield the maximum transmission ratio is upon the observation direction side of said liquid crystal panel.