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33.2: New Back Reflector and Front Film for Improved Efficiency of Direct‐lit LED Backlights for LCD TV
Author(s) -
Anderson James,
Schardt Craig,
Yang Joseph,
Koehler Bruce,
Ostlie Brian,
Watson Philip,
Ingham Kelly,
Kienitz Scott,
Ouderkirk Andrew
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785534
Subject(s) - reflector (photography) , liquid crystal display , materials science , luminance , backlight , light emitting diode , optoelectronics , optics , computer science , light source , physics
Abstract In this paper, we demonstrate how two new films based on 3M™ multilayer film technology can result in improved efficiency in LED backlights for LCD TV. When used together, the films decrease off axis color shift and increase axial luminance by up to 15%, allowing for reduction in number of LEDs and therefore system cost.