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Browsing by Author "Hsiao, Shun-Ting"

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    High gain diffuser film with surface relief of 2D paraboloidal lens array
    (2007)
    Hsiao, Shun-Ting
    ;
    Yao, Po-Hung
    ;
    Tien, Chung-Hao
    ;
    光電工程學系
    ;
    Department of Photonics
    A novel micro-structure diffuser film, paraboloidal lens array film (PLAF), was provided for the backlight module of liquid-crystal display (LCD). PLAF, which enables both of light-collecting and diffusing abilities, has the similar functions to BEFs and diffusers. PLAF with periodic paraboloidal lens array enhances on-axis intensity achieved to 155% along the normal direction. In addition, PLAF subject to random lens pitches performs 134% on-axis intensity and 50% full width at half maximum (FWHM) increase compared with conventional diffuser in bidirectional transmittance distribution function (BTDF).