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.
© 2009 IEEE
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