| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet having a plurality of light guide plate patterns, each light guide plate pattern having a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface. <P>SOLUTION: An optical sheet 300e is made in steps comprising: extruding a resin 450a into a nip between a first patterned roller 480a and a second patterned roller 480b at a first patterned roller surface temperature T1, a second patterned roller temperature T2 and a nip pressure P1, to form the optical sheet 300e, the optical sheet having a first patterned surface and a second patterned surface, the first patterned surface having a micro-pattern transferred from the first patterned roller 480a and the second patterned surface having a micro-pattern transferred from the second patterned roller 480b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
