Patent ID: 6633350
Filing Date: 2003-10-14
Classification: G01D,G02B,G02F

Abstract:
A display apparatus, including:an illumination device comprising a planar light source showing a luminance distribution falling toward its peripheries, a scattering means disposed contiguous to the light source for scattering emitted light from the light source when the emitted light passes the scattering means, and a transparent sheet member disposed contiguous to the scattering means and having a flat major surface on a transmitted light side thereof; a polarizer sheet having a refractive index nâ€² disposed contiguous to the flat major surface of the transparent sheet member; and a display panel disposed opposite to the illumination device with respect to the polarizer sheet and illuminated by the illumination device via the polarizer sheet, wherein the transparent sheet member has a refractive index n so as to satisfy n>nâ€² for effectively directing reflected light from the major surface thereof toward the scattering means.