| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve color reproducibility by enlarging color gamut. <P>SOLUTION: An optical sheet A1 comprises a base layer 60, and an intermediate emission color cutting layer 70 which is placed on at least one of emission surface side and incident surface side of light in the base layer 60 and cuts an RG intermediate emission color. The intermediate emission color cutting layer 70 comprises a transparent resin layer which contains a coloring agent absorbing the RG intermediate color at a wavelength of about 590 nm. For the transparent resin, at least 88% of light transmittance is required, and its material may be similar to or different from that of base layer 60, e.g., polycarbonate, acrylic, acrylic styrene copolymer, polystyrene, styrene-butadiene-acrylonitrile copolymer, amorphous polyarylate, polyether sulfone, bulky cyclic olefin polymer and so on. <P>COPYRIGHT: (C)2012,JPO&INPIT |
