| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet capable of appropriately absorbing a wide range of external light and improving contrast, to provide a display device, and to provide the manufacturing method of the optical sheet. <P>SOLUTION: The optical sheets 10, 20, 30 provided with a plurality of layers are arranged on the observer side of a video light source, controls light emitted from the image light source, and emit the light to the observer side, wherein at least one layer among the plurality of layers is one of optical functional sheet layers 11, 21, 31 including: prism parts 12, 22, 32 arranged side by side along the sheet surface so as to be able to transmit light, respectively; and wedge parts 13, 23, 33 arranged side by side among prism parts so as to be able to absorb light, respectively and at least other one layer among the plurality of layers is one of light absorbing layers 17, 27, 37. <P>COPYRIGHT: (C)2009,JPO&INPIT |
