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    • 8. 发明授权
    • Prism sheet having wet-out property and LCD back light unit thereby
    • 具有浸湿性的棱镜片和LCD背光单元
    • US08384847B2
    • 2013-02-26
    • US12451706
    • 2007-11-26
    • Young Soo HanSeok Hoon JangJun Hyeak ChoiMan Suk KimKyu Ha Chung
    • Young Soo HanSeok Hoon JangJun Hyeak ChoiMan Suk KimKyu Ha Chung
    • G02F1/1335
    • G02B5/045G02B6/0053G02F1/133606
    • A prism sheet, capable of enhancing wet-out ability in a whole back light unit while maintaining center brightness, transmittance and haze in good condition, is disclosed. The prism sheet includes a base film made of a transparent material and having a flat first surface, and a light refracting part including a plurality of unit prisms unitarily formed with the base film on a second surface of the base film, opposite to the flat first surface. The unit prisms have a predetermined shape of a cross section, and are arranged with orientation. When an angle formed between a ridge of the unit prism of the light refracting part and a normal line of the flat first surface is defined as θn, θn and θn+1 have different values from each other, and n is an integer more than 2. An LCD back light unit using the above prism sheet is also disclosed.
    • 公开了一种棱镜片,其能够在保持中心亮度,透光率和雾度的同时提高整个背光单元的润湿能力。 棱镜片包括由透明材料制成并具有平坦的第一表面的基膜和在基膜的第二表面上与基膜一体形成的多个单位棱镜的光折射部分,与平坦的第一表面相对 表面。 单位棱镜具有预定形状的横截面,并且以取向布置。 当在光折射部分的单位棱镜的脊与平坦的第一表面的法线之间形成的角度被定义为& t; n,&het; n和&; t; n + 1彼此具有不同的值,n 是大于2的整数。还公开了使用上述棱镜片的LCD背光单元。