Title

A broadband wide-incident-angle reflective polarization converter

Authors

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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