Light diffusing film and use thereof
AssigneeDai Nippon Printing Co., Ltd.
InventorsTaiji Suga, Fumihiro Arakawa
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Abstract
A light diffusing film is provided which can be easily and stably produced and possesses excellent light diffusing properties, and, especially when used in combination with a prism sheet, can improve the luminance of light from a light source. A light diffusing film 1 comprises a transparent substrate 2 and a light diffusing layer 3 provided on at least one side of the transparent substrate 2. The light diffusing layer 3 is substantially free from light diffusing particles and is formed of an ionizing radiation-cured resin having on its surface fine concaves and convexes. The light diffusing layer 3 has a surface roughness of 1 to 10 μm in terms of ten-point average roughness Rz and an average inclination θa of 5 to 20 degrees.
Claims7
A light diffusing film comprising:
- a transparent substrate;
- and
- a light diffusing layer formed on at least one side of the transparent substrate, the light diffusing layer being formed of an ionizing radiation-cured resin,
- the light diffusing layer having on its surface fine concaves and convexes, the light diffusing layer having a surface roughness of 1 to 10 μm in terms of ten-point average roughness Rz, the fine concaves and convexes having an average inclination Θa of 5 to 20 degrees, and the light diffusing film being so constructed to have a haze of 85 to 95% and a total light transmittance of 80 to 90%.
Dependencies are inferred from the claim text.