Patent ID: 7701535

Claim:
A liquid crystal display (LCD) device comprising a liquid crystal (LC) layer and a reflective film for reflecting incident light transmitted through said LC layer to allow said incident light to again pass through said LC layer, said reflective film having thereon a convex and concave pattern, said convex and concave pattern including a plurality of pattern groups having a common pattern and arranged periodically, each of said pattern groups including a plurality of (N) figure elements, each of said figure elements having an apex randomly shifted, within a maximum shift amount (P) equal to or more than 0.4, from corresponding apexes of a standard figure element in a standard pattern including a plurality of standard figure elements, wherein: the maximum shift amount (P) of the apex is an index within which the apex of the subject figure element is shifted from the apex of the standard figure element; if a shift amount (rnd P) assumes “0”, then the apex is not to be shifted, and if said shift amount (rnd P) assumes “1”, then the apex of the subject figure is to be shifted to reach the central point between the original point of the apex and each adjacent apex of the standard figure element; and said random shift of said apex in each figure element allows a discrete angle α of bright spots defined by: α=(λ A /Ls×N )·(180/π) to assume 0.01 degrees or smaller, said bright spots occurring due to diffraction of said incident light reflected by said reflective film, said λ A being an average wavelength of said incident light said Ls being a pitch of said standard pattern.