NDLI: A Highly Directional Light Guide Plate Based on V-Groove Microstructure Cell

Content Provider	IEEE Xplore Digital Library
Author	Chi-Feng Chen Shin-Hong Kuo
Copyright Year	2005
Abstract	A new light guide plate (LGP) with highly directional emission properties based on V-groove cells has been investigated. To achieve high uniformity at normal luminance distributions for LCD backlight units (BLUs), we present a cell composed of multiple V-groove microstructures, and demonstrate its performance in a 10.1-inch BLU. We have found the density of the V-grooves to affect luminance distribution, and the directionality of emissions increases with number of V-groove microstructures in a cell. A cell composed of five V-groove microstructures delivered a 1.9-fold increase in optical efficiency when compared with a conventional BLU: the central luminance was 2.3 times greater, the main viewing angle was at -1°, and distribution of viewing luminance was almost symmetrical. In conclusion, our V-groove cell LGP for BLUs is thin and simple, providing high efficiency and high uniformity at normal luminance distributions.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1030
Ending Page	1035
Page Count	6
File Size	780416
File Format	PDF
ISSN	1551319X
Volume Number	10
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstructure Optical films Optical reflection Light sources Optical losses light guide plate (LGP) Backlight unit (BLU) display
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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