Light control film and backlight unit using the same
AssigneeKimoto Co., Ltd.
InventorHideki Etori
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Abstract
A light control film enabling improvement in front luminance, having appropriate light diffusing property and free from problems of interference pattern, glare etc. is provided. A light control film 10 having a rough surface as one surface and a substantially smooth surface as the other surface is constituted so that total light transmission of the film for lights entered from the smooth surface should be not more than 65%, total light transmission of the film for lights entered from the rough surface should be not less than 80%, as measured according to the measurement method defined in JIS K7361-1:1997, and a value obtained by subtracting the total light transmission for smooth surface incidence from the total light transmission for rough surface incidence should be not less than 30%.
Claims19
A light control film having a rough surface as one surface and a substantially smooth surface as the other surface, wherein total light transmission of the film for light entering from the smooth surface is not more than 65% and not less than 20% as measured according to the measurement method defined in JIS K7361-1:1997.
A light control film having a rough surface as one surface and a substantially smooth surface as the other surface, wherein total light transmission of the film for light entering from the smooth surface is not more than 65%, total light transmission of the film for light entering from the rough surface is not less than 80%, as measured according to the measurement method defined in JIS K7361-1:1997, and a value obtained by subtracting the total light transmission for smooth surface incidence from the total light transmission for rough surface incidence is not less than 30.
Dependencies are inferred from the claim text.