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    • 4. 发明申请
    • Anisotropic Diffusion Film
    • 各向异性扩散膜
    • US20080297906A1
    • 2008-12-04
    • US11629101
    • 2005-06-14
    • Kozo TakahashiAkikazu KikuchiHiromitsu Takahashi
    • Kozo TakahashiAkikazu KikuchiHiromitsu Takahashi
    • G02B5/02
    • G02B5/0257G02B3/0031G02B3/005G02B5/0231G02F2001/133507G02F2001/133607
    • An anisotropic diffusion film has a high brightness, high luminance uniformity ratio and a high productivity, and is suitable essentially for a surface light source of planar display devices for liquid crystal display devices and the like, such as a direct backlight. In the anisotropic diffusion film, a stripe-shaped convex lens is formed on one surface of a substrate film. The cross-sectional shape of a plane vertical to the stripe direction satisfies the following conditions that (A-C) and the whole of light transmittance of the anisotropic diffusion film is 70% or more: A: the contour of the projecting part of the cross-sectional shape is a curved line; B: the aspect ratio of the projecting part of the cross-sectional shape is 1 or more but not more than 3; and C: the distance between the apexes of the adjacent projecting parts of the cross-sectional shape is 10 μm or more but not more than 100 μm.
    • 各向异性扩散膜具有高亮度,高亮度均匀性和高生产率,并且基本上适用于诸如直接背光的液晶显示装置等的平面显示装置的表面光源。 在各向异性扩散膜中,在基板膜的一个表面上形成条状凸透镜。 垂直于条纹方向的平面的横截面形状满足以下条件:(AC)和各向异性扩散膜的透光率的全部为70%以上:A:横截面的突出部分的轮廓, 截面形状为曲线; B:截面形状的突出部的纵横比为1以上且3以下; C:截面形状的相邻突出部的顶点之间的距离为10μm以上且不大于100μm。