NOVELTY - A light diffusing plate (10) has at least two layer of a resin layer (20) containing aspherical particles (13) having average particle diameter of 1-6 mu m as light-scattering particle, and a resin layer (21) containing spherical particles (14) having average particle diameter of 1-6 mu m as light-scattering particle. The resin layer is formed by dispersion-mixing light-scattering particles and resin (12). The refractive index difference of aspherical particle and resin is 0.1-0.18. The refractive index difference of spherical particle and resin is 0.1-0.18.    USE - Light diffusing plate is used for optical sheet used for backlight unit used for display apparatus (all claimed) e.g. liquid crystal display used in notebook personal computer. Optical sheet is used for light cover, signboard, solar cell, building material, etc.    ADVANTAGE - The light diffusing plate has improved brightness, light diffusing characteristics and light transmission characteristics. The display apparatus having the backlight unit comprising optical sheet has improved viewing angle characteristics.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) optical sheet (25), which has light source (11) arranged on one surface and emits incident light to other surface, light diffusing plate arranged on other surface opposite to light surface, and lens sheet (17a) for converting and radiating optical characteristics of light of light source passing the light diffusing plate;    (2) backlight unit (35), which has optical sheet and light source portion arranged on one surface of optical sheet; and    (3) display apparatus (70), which has backlight unit and image display portion for display image by making light from backlight unit into display unit, arranged on emission surface of backlight unit.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of structure of display apparatus. (Drawing includes non-English language text)    Light diffusion plate (10)    Light source (11)    Resin (12)    Non-spherical particles (13)    Spherical particles (14)    Lens sheet (17a)    Resin layers (20,21)    Optical sheet (25)    Backlight unit (35)    Display apparatus (70)