| 摘要 |
There is provided an optical sheet and a display device which hardly cause a change in color depending on the observation angle of an image. The optical sheet comprises a plurality of layers, at least one of the plurality of layers being an optical functional sheet layer which includes prisms arranged in parallel along a surface of the optical sheet in such a way that light is transmittable; and light-absorbing portions arranged in parallel between the prisms in such a way as to absorb light, at least another one of the layers being a light diffusing material-containing layer with optical diffusing particles dispersed in a sheet-shaped base material, and the optical sheet satisfying a relation of NdK<NdR and &ngr;dK<&ngr;dR, wherein NdK is a refractive index of the base material of the light diffusing material-containing layer and &ngr;dK is an Abbe number thereof, and NdR is a refractive index of the optical diffusing particles and &ngr;dR is an Abbe number thereof.
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