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High-Efficiency and High-Quality LCD Backlight Using Highly Scattering Optical Transmission Polymer

Akihiro HORIBE, Masahiro BABA, Eisuke NIHEI, Yasuhiro KOIKE

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Summary :

We have proposed a highly scattering optical transmission (HSOT) polymer for use as a high efficiency light source medium. This polymer contains specified internal microscopic heterogeneous structures for controlling light-transmission properties. An LCD backlighting system having a new light pipe made of this polymer has twice the brightness of the conventional one. A light scattering phenomenon inside the HSOT polymer was quantitatively analyzed by a ray tracing simulation based on the Mie scattering theory and the Monte Carlo method. The illumination of the backlight which is optimized by using the simulation program has enough uniformity of intensity and color because of specified multiple light scattering phenomena inside the HSOT polymer. We propose the new backlighting system having fewer components and twice efficiency of the conventional one.

Publication
IEICE TRANSACTIONS on Electronics Vol.E81-C No.11 pp.1697-1702
Publication Date
1998/11/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Electronic Displays)
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