NDLI: Design of a diffuser plate with micro-structures for direct type LED backlight

Content Provider	IEEE Xplore Digital Library
Author	Liu Mingyan Wu Darning
Copyright Year	2011
Description	Author affiliation: Institute of Plastics Machinery and Engineering, Beijing University of Chemical Technology, China (Liu Mingyan; Wu Darning)
Abstract	The diffuser plate is the key component of the direct type LED backlight module. The design of the micro-structures on the surface of the diffuser plate is the critical factor in manufacturing diffuser plate of good optical properties. A mathematical model for direct type LED backlight is built. The size and arrangement of micro-structures are simulated using Lighttools software based on a Monte Carlo ray tracing. The influence of the magnitude and arrangement of semisphere or V-Cut on the optical properties of the diffuser plate is analyzed by using this method. For the diffuser in this experiment, the optical properties are best when the semisphere radius is fixed at 0.1mm and the center distance between two adjacent semispheres are 0.6mm; for the V-Cut micro-structures, the optical properties are best when the distance between two adjacent V-Cut grooves is 0.4mm and the vertex ³ is 110°. The results lay a theoretical basis for improving the optical properties of the direct type LED backlight.
Starting Page	277
Ending Page	280
File Size	378214
Page Count	4
File Format	PDF
ISBN	9781424480364
e-ISBN	9781424480395
DOI	10.1109/ICEICE.2011.5777543
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Ray tracing Ray tracing method Diffuser design Light emitting diodes Adaptive optics Software Optical reflection Optical scattering Lighttools Direct type LED backlight
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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