Title :
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
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;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2009.2027033
