| abstract |
The optical sheet that the present invention provides a kind of manufacture method of optical sheet for the transferability that can fully improve minute concave-convex structure and is molded to obtain using the manufacture method.The optical sheet of the present invention is the optical sheet for being formed the first layer containing polycarbonate resin and the second layer laminate containing non-crystalline polyamide resin using co-extrusion modling, the interface of first layer and the second layer can peel off, among the surface of first layer and the second layer, at least on a surface formed with micro concavo-convex shape.So there is multiple layers of optical sheet, because sheet material integrally thickens when can be molded melting extrusion, therefore the laminated body in shaping can be made to keep sufficient heat, the transferability of minute concave-convex structure can be improved.Further, since a layer is used only by peeling off, the thin layer of optical sheet can be also realized. |