| 摘要 |
A white reflection film includes a coating layer including spherical particles on at least one surface of a white film, wherein, when particle diameters of the spherical particles are R and a thickness of the coating layer is H, an average number of the particles satisfying R>H in 100H square in a surface area of the coating layer is at least 10. The white film, which is capable of contributing to the improvement of luminance of a backlight being used in the backlight, can be provided. |
| 主权项 |
1. A white reflection film comprising a coating layer including spherical particles made of at least one selected from the group consisting of silicon dioxide, acryl and silicone on at least one surface of a white film, wherein the coating layer is an outermost layer of the white reflection film, wherein, thickness H of the coating layer is 1.3 to 2.8 μm, wherein, when particle diameters of the spherical particles R, the average value of particle diameters is 4.5 to 4.9 μm, and the coating layer has a thickness H, an average number of the particles satisfying R >H in 100H square in a surface area of the coating layer is 450 to 530, and wherein average reflectance in wavelengths of 400-700 nm measured from a surface of the coating layer is at least 90%, the surface of the coating layer has a section which is only binder resin forming the coating layer and a content rate of the spherical particles in the coating layer is 20 wt. % to 50 wt. % relative to the entire coating layer. |
