| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical laminated sheet high in efficiency for extracting light to the outside, small in a linear expansion coefficient, and excelling in dimensional stability and a steam barrier property. SOLUTION: This optical laminated sheet has, on one surface of a transparent base material formed with a transparent resin and a fibrous filler, one or more layers comprising an organic layer, an inorganic layer and a low-refractive-index layer. The optical laminated sheet is characterized in that an average linear expansion coefficient of the transparent base material at 30-150°C is not larger than 40 ppm, and the refractive index of the low-refractive-index layer is smaller than those of the transparent resin and the fibrous filler of the transparent base material. The optical laminated sheet preferably comprises the respective layers in the order of the transparent base material, the organic layer, the inorganic layer and the low-refractive-index layer. COPYRIGHT: (C)2008,JPO&INPIT
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