High gain diffuser film with surface relief of 2D paraboloidal lens array

Shun Ting Hsiao*, Po Hung Yao, Chung-Hao Tien

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


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).

Original languageEnglish
Number of pages4
StatePublished - Dec 2007
Event14th International Display Workshops, IDW '07 - Sapporo, Japan
Duration: 5 Dec 20075 Dec 2007


Conference14th International Display Workshops, IDW '07


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