Highly-efficient backlight for liquid crystal display having no optical films

Okumura, Takamitsu; Tagaya, Akihiro; Koike, Yasuhiro; Horiguchi, Masahiro; Suzuki, Hiromasa
September 2003
Applied Physics Letters;9/29/2003, Vol. 83 Issue 13, p2515
Academic Journal
We propose a highly-efficient backlight that requires no optical films with a polymer containing spherical particles of micron size. The developed backlight is provided with microprisms at the bottom surface, which can reflect directly the incident light into the front direction. The modeling simulation program, employing a Monte Carlo method based on Mie scattering theory, has optimized both the prismatic condition and the multiple scattering characteristics. We confirm that a uniformity of brightness can be achieved without using any optical films, resulting in a high optical efficiency of 62%. © 2003 American Institute of Physics.


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