| 摘要 |
PROBLEM TO BE SOLVED: To provide a light diffusion sheet that has high diffusing efficiency and can obtain an excellent image bright with high contrast without dull colors and blur by reducing the unnecessary scattered light, and can realize a high quality image. SOLUTION: This is a light diffusion agent to be used by dispersing in a transparent base material, consists of particles and the skin layers covering them, and satisfies the conditional equations (1) and (2). Conditional equation (1): N1<N2<N3, or N3<N2<N1 where N1 is the refractive index of transparently base material, N2 the refractive index of the skin layer, and N3 the refractive index of the particles. In the conditional equation (2), R represents the average radius (μm) of the particles, T the thickness (μm) of the skin layer, n zero or a larger integer,ψis about 0.4 (μm), andλis about 0.7 (μm). Further, it is possible to obtain a light diffusion sheet in which this light diffusion agent ia dispersed, and a non-glare sheet. COPYRIGHT: (C)2005,JPO&NCIPI |
