OPTICAL SHEET FOR DISPLAY, ITS MANUFACTURING METHOD, BACKLIGHT UNIT, AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical sheet which is high in the availability of light rays and can reduce materials and processes concerning a tacky adhesive or an adhesive, and to provide a backlight unit and a display device using the optical sheet.

SOLUTION: The optical sheet 10 is constituted by forming a light-reflecting tacky adhesion layer 2 which has an opening 2a for light transmission corresponding to an optical axis-containing central part of a unit lens on a surface opposite to a lens layer 4 of a lens sheet 1 having a lens layer 4 constituted of a cylindrical lens being a unit lens or a prism or their assembly. Then the lens sheet 1 and a light diffusing sheet 5 are directly stuck together via the tacky adhesion layer 2 having light reflectivity on a surface of the lens sheet 1 being opposite to the lens layer 4.

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