Back to results
US 7,119,959 B2Granted
Optical film
AssigneeLintec Corporation
InventorsSatoru Shoshi, Yutaka Onozawa
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLintec Corporation
InventorsSatoru Shoshi, Yutaka Onozawa
Estimating the term…
A film for optical applications which effectively prevents reflection of light on the surface of image display devices such as PDP, CRT and LCD, exhibits excellent scratch resistance and transmission of light, provides excellent adhesion between layers and can be produced at a low cost is disclosed. The film comprises (A) a high refractivity hard coat layer (the refractive index: 1.60 to 1.75, the thickness: 2 to 20 μm) comprising (a) an antimony-doped tin oxide having a needle shape (the average particle diameter along the major axis: 0.05 to 10 μm, the average aspect ratio: 3 to 100), (b) at least one other metal oxide and (c) a material cured with an ionizing radiation and (B) a low refractivity layer (the refractive index: 1.30 to 1.45, the thickness: 40 to 200 nm), which are successively laminated at least on one face of a substrate film.
A film for optical applications comprising (A) a high refractivity hard coat layer which comprises (a) an antimony-doped tin oxide having a needle shape having an average particle diameter along a major axis of 0.05 to 10 μm and an average aspect ratio of 3 to 100, (b) at least one other metal oxide and (c) a material cured with an ionizing radiation and has a refractive index in a range of 1.60 to 1.75 and a thickness in a range of 2 to 20 μm and (B) a low refractivity layer which has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film.
Dependencies are inferred from the claim text.