| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical film sheet high in surface smoothness characteristic which can be adapted to use for a display element, especially an EL element of which the display defect is reduced by the reduction of a barrier defect, and a display element using the same. SOLUTION: The optical film sheet is constituted by laminating an ultraviolet curable resin composition mainly comprising an acrylate monomer on at least one surface of a base material comprising a polymer material and drying the formed composition layer on the base material to cure the same. This optical film sheet is formed as an unperforated film sheet wherein the arithmetic mean value (Ra) of the surface roughness of the cured layer of the ultraviolet curable resin composition is Ra < 10 nm; the maximum height (Ry) thereof is Ry < 0.3μm; the depth from the average line thereof is≥10 nm; and an aspect ratio (hole depth/hole diameter) of the hole depth to the hole diameter is≥0.2. By this constitution, the interlaminar adhesiveness with a barrier film to be laminated of the optical film sheet is improved. COPYRIGHT: (C)2004,JPO
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