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5.1: Twisted S‐Shaped Light Pipe for Highly Efficient Coupling between LED and Light Guide in Backlight System
Author(s) -
Suzuki Hiromasa,
Higuchi Masaru,
Yang Yingbao
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 - 10.1889/1.2785220
Subject(s) - backlight , light guide , coupling (piping) , optics , optoelectronics , light emitting diode , materials science , light source , physics , composite material , liquid crystal display
We propose a twisted S‐shaped light pipe for coupling between an LED and a light guide to realize a thin light guide. This light pipe suppresses optical loss, while thinning down the light guide. The light guide using the light pipe in this work improves optical efficiency by 15% higher than that of a conventional light guide with the light guide profile thinning down from 0.60mm to 0.30mm.