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Proceedings Paper

A kind of side-emitting LED backlight light guide panel net dot design method
Author(s): Hong Wang; Chuanfang Liu; Wei Zhang; Lingling Ji
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Paper Abstract

In this paper, the transmission principle of light crossing the light guide panel was analyzed and a calculating method of the net dot distribution was deduced according to the illumination distribution of LED. Using this method, the light guide panel net dot distribution of a small size backlight was calculated. And, in the light of net not distribution regulation, the net dot layout was optimized and simplified associating with area segmentation adjustment method. Optical model was made and ray tracing was done by optical design software, the simulation result indicate that the surface luminance uniformity of the backlight is 87% and the light efficiency is 71%, which is achieved by less LED sources and area segmentations compared with the same size backlight. The net dot of light guide panel sample was made by laser engraving. The luminance uniformity of testing is consistent with that of simulation.

Paper Details

Date Published: 16 November 2010
PDF: 8 pages
Proc. SPIE 7852, LED and Display Technologies, 78520B (16 November 2010); doi: 10.1117/12.870634
Show Author Affiliations
Hong Wang, South China Univ. of Technology (China)
Georgia Institute of Technology (United States)
Chuanfang Liu, South China Univ. of Technology (China)
Wei Zhang, South China Univ. of Technology (China)
Lingling Ji, South China Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7852:
LED and Display Technologies
Gang Yu; Yanbing Hou, Editor(s)

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