| 摘要 |
PURPOSE:To lower average reflectivity by forming a dispersion film layer to the refractive index smaller than the refractive index of a 1st antireflection layer and larger than the refractive index of the 2nd antireflection layer. CONSTITUTION:The antireflection sheet is successively formed with the dispersion film consisting of the fine particles of a metal oxide, the 1st antireflection layer and the 2nd refractive index on a plastic sheet. The dispersion film layer is formed to the refractive index smaller than the refractive index of the 1st antireflection layer and larger than the refractive index of the 2nd antireflection layer. A transparent plastic sheet usually having about 25-250mum thickness is used for the plastic sheet to be used as a base material, for which polyethylene terephthalate, polycarbonate, etc., are used. The dispersion film layer is formed by dispersing the fine particles of the metal oxide such as SiO2 or Al2O3 having about 2-15mum grain size with a binder consisting of a transparent synthetic resin and having 2-30mum thickness. |
