We describe an advanced highly scattering optical transmission (HSOT) polymer backlight system that has shown twice the brightness of a conventional transparent system in spite of its having a thinner backlight. The HSOT polymer that contains optimized heterogeneous structures produced homogeneous scattered light with forward directivity and sufficient color uniformity. Although it was thought that polymers for light-guide plates (LGPs) must be transparent to minimize scattering, we have come to the conclusion that the HSOT polymer, which is not an absorping medium but a scattering medium, is a more suitable medium for LGPs.
© 2001 Optical Society of America
(120.2040) Instrumentation, measurement, and metrology : Displays
(230.3720) Optical devices : Liquid-crystal devices
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media
Akihiro Tagaya, Michio Nagai, Yasuhiro Koike, and Kazuaki Yokoyama, "Thin Liquid-Crystal Display Backlight System with Highly Scattering Optical Transmission Polymers," Appl. Opt. 40, 6274-6280 (2001)