| 摘要 |
An optical sheet with elasticity is provided to maintain function of an optical sheet by preventing luminance degradation due to damage. A top surface of a structure layer(10) is compressed by using a flat tip(11). The top surface of the structure layer has a compressed depth(D1). An optical sheet has flexibility without damage from an external shock. The top surface of the structure layer is recovered to an original state without damage by removing the flat tip. A height of the recovered optical sheet is different from a height of the original optical sheet. Difference between the compressed depth and the recovered depth is proportional to an elastic force. |
