Patent ID: 7602449
Filing Date: 2009-10-13
Classification: G03B

Abstract:
1. A projection type liquid crystal display unit comprising: (a) a light source; (b) a polarized beam splitter which separates S-polarized light out of a light emitted from said light source; (c) a liquid crystal light bulb which receives said S-polarized light and converts the thus received S-polarized light into a modulated light having polarization varying in accordance with an image signal, said light source, said polarized beam splitter and said liquid crystal light bulb being aligned along a light emitting axis, said modulated light being introduced again into said polarized beam splitter to extract a light having an intensity varying in accordance with an image signal, out of said modulated light; (d) a projection lens; and (e) a screen onto which said light leaving said polarized beam splitter is projected through said projection lens, said liquid crystal light bulb including: (c (c an incident light being reflected at said liquid crystal display panel being exposed through said opening, said first surface being roughened.