A broadband wide-incident-angle reflective polarization converter

    Authors

    Y. Li; T. X. Wu;S. T. Wu

    Abbreviated Journal Title

    J. Soc. Inf. Disp.

    Keywords

    Polarization converter; liquid-crystal film; liquid-crystal display; light efficiency; LIQUID-CRYSTAL DISPLAYS; OPTICS; Engineering, Electrical & Electronic; Materials Science, ; Multidisciplinary; Optics; Physics, Applied

    Abstract

    A high-performance reflective polarization converter which could be used in a backlight recycling system for liquid-crystal-display (LCD) devices is proposed. The device consists of a twisted-nematic (TN) liquid-crystal film, a uniaxial A-plate, and a reflector. The configuration parameters, such as thickness and orientation of the films, are optimized using a genetic algorithm. As a result, the design can convert light from TM to TE polarization (or TE to TM) at a maximum 99.7%, minimum 91.3%, and average 96.7% conversion efficiency for the entire visible spectrum and incident angle from 0 to 60 degrees. Such a broadband reflective polarization converter is particularly useful for enhancing the light efficiency and reducing the power consumption of LCDs.

    Journal Title

    Journal of the Society for Information Display

    Volume

    17

    Issue/Number

    10

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    849

    Last Page

    852

    WOS Identifier

    WOS:000270268300011

    ISSN

    1071-0922

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