| 摘要 |
An optical sheet is provided to improve luminance and to reduce light loss by minimizing use of an additional optical sheet or films. An optical sheet(10) includes a convex part(11), a pattern part, and a reflecting layer. The convex part is formed in one surface of the optical sheet. The pattern part(13) is formed in a position overlapped with a concave part(12) adjacent to the convex part, and is included in a rear surface(14). The reflecting layer(20) on the pattern part includes reflecting material. The reflecting material includes one or more kinds selected among titanium dioxide, silver, barium sulphate, and calcium carbonate.
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