OPTICAL SHEET WITH PRINTED DOUBLE-SIDED LIGHT GUIDE PLATE

摘要

PURPOSE: An optical sheet is provided to reduce molding speed and the thickness of a light guide plate. CONSTITUTION: An optical sheet(300a) arranges a layer by extruding a first resin with nip pressure and a patterning roller surface temperature between a pressurizing roller(480b) and a patterning roller(480a). The layer has a non-patterning surface and a patterning surface. The patterning surface includes a pattern transferred from the patterning roller. The optical sheet which includes a plurality of light guide plate patterns is arranged by printing a separated pattern on the non-patterning surface of an extruded layer.