LED backlight module by a lightguide-diffusive component with tetrahedron reflector array

NCUIR > College of Electrical Engineering & Computer Science > Department of Electrical Engineering > journal & Dissertation > Item 987654321/107679

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/107679

Title:	LED backlight module by a lightguide-diffusive component with tetrahedron reflector array
Authors:	蔡章仁;Tsai, Jang-Zern;Chang, Rong-Seng;Li, Tung-Yen;Chuang, Thomas Chiang
Contributors:	資訊電機學院電機工程學系
Keywords:	Arrays;backlight module;LED;Lenses;Light emitting diodes;Light sources;Mathematical model;secondary lightguide-diffusive;Simulation;tetrahedron;Vectors
Date:	2012-05-08
Issue Date:	2026-04-23 14:21:18 (UTC+8)
Publisher:	IEEE Computer Society;IEEE
Abstract:	摘要： In our previous work, IEEE/OSA Journal of Display Technology, February 2012, we examined the luminance and uniformity characteristics of a newly invented secondary optical lens with a wide emission angle called a "lightguide-diffusive component". The lightguide-diffusive component is designed for thin direct LED backlighting applications. The LED backlight module is composed of at least an LED light source, a secondary lightguide-diffusive component with a micro-structure reflective bottom surface, and a flexible printed circuit (FPC) for LED lighting without a brightness-enhanced film (BEF). Through this lightguide-diffusive component, the emission profile of a single LED is modified to provide better illumination and more uniformity. In this work, the micro-structure reflective bottom is redesigned to be shaped like a Tetrahedron Reflector Structure Array instead of a triangle cylinder structured array, resulting in a more uniform spatial light energy distribution on the emission plane of the LED backlight. The simulation results show an increase in the uniformity ratio with the new design from 72% to 76%, a 4% improvement, the angle of the luminous intensity is increased from 98 deg to 112 deg, a 14 deg improvement, a decrease in the luminance is from 9024 nits to 8551 nits, an impairment of 5%, and a decrease in the volume of the micro-structure reflector from 1.154 mm 3 to 0.767 mm 3 , a 33.5% volume reduction (cost saving). 其他題名： JDT 出版者： IEEE 出版日期： 2012-06-01 出處： Journal of display technology, 2012-06, Vol.8 (6), p.321-328 資源來源： IEEE Electronic Library (IEL) 識別號： ISSN: 1551-319X 識別號： EISSN: 1558-9323 識別號： DOI: 10.1109/JDT.2012.2184077 識別號： CODEN: IJDTAL
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	17	View/Open

社群 sharing

Loading...