Design Optimization of Reflective Polarizers for LCD Backlight Recycling

Author

Li, Yan ; Wu, Thomas X. ; Wu, Shin-Tson

Author_Institution

Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA

Volume

5

Issue

8

fYear

2009

Firstpage

335

Lastpage

340

Abstract

We systematically study and optimize the design of multilayer birefringent reflective polarizers for recycling the backlight of liquid crystal displays. Factors affecting the Bragg reflection are analyzed in detail, including number of layers for establishing Bragg reflection, refractive index difference, effective refractive index, and thickness ratio. Different methods for achieving broadband reflection are investigated, so that the reflective polarizer could cover the entire visible wavelengths and a large incident angle. In addition, the effects of material dispersion on the device design are analyzed.

Keywords

liquid crystal displays; optical design techniques; optical multilayers; refractive index; Bragg reflection; LCD backlight recycling; broadband reflection; liquid crystal displays; material dispersion effects; multilayer birefringent reflective polarizer design; refractive index; Birefringence; Design optimization; Liquid crystal displays; Nonhomogeneous media; Optical polarization; Optical reflection; Optical refraction; Optical variables control; Recycling; Refractive index; Birefringent; liquid crystal display (LCD); multilayer; polymer; reflective polarizer;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2009.2027033

Filename

5196840