| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet which has both defect concealing performance and luminance. <P>SOLUTION: In the optical sheet 1 which condenses and/or diffuses incident light, a nearly hemispherical microlens 32 and a projected line shape 33 are formed on the light emitting side surface of a flat plate-shaped base material 31 having translucency. The projected line shape 33 is a cylindrical lens or a prism or their combination, and constituted by arranging projected shapes each of which has an almost semicircular or an almost triangular cross section and extends in one direction. The height of the projected line shape 33 is not fixed and changed in a range between 8% and 108% with respect to the height of the microlens 32. <P>COPYRIGHT: (C)2011,JPO&INPIT |
