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Proceedings Paper

Novel micro-dots design to resolve Hotspot appeared on ultra-slim LEDs backlight
Author(s): Wei-Ping Chan; Modie Tsai; Yu-Ren Chiou; Chih-Sheng Jao
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Paper Abstract

The LGP (Light guide plate) plays a key role of the backlight in LCD module. It determines the efficiency and uniformity of the whole backlight unit (BLU). With decreasing thickness in panel system and reduced quantity of LEDs, the Hotspot issue becomes more and more serious. We proposed a virtual light field of LEDs embedded inside the LGP for non-sequential ray-tracing. Two semi-analytical formulations are conducted to optimize the micro-dots’ distribution when LGP is with mirrored or corrugated entrance plane. The ultra-slim LGPs fabricated by solid-state laser and diamond-ruling machine show excellent elimination of the Hotspot phenomenon.

Paper Details

Date Published: 13 March 2013
PDF: 8 pages
Proc. SPIE 8607, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVIII, 860716 (13 March 2013); doi: 10.1117/12.2003285
Show Author Affiliations
Wei-Ping Chan, Forhouse Corp. (Taiwan)
Modie Tsai, Forhouse Corp. (Taiwan)
Yu-Ren Chiou, Forhouse Corp. (Taiwan)
Chih-Sheng Jao, Forhouse Corp. (Taiwan)
Indusrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 8607:
Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVIII
Xianfan Xu; Guido Hennig; Yoshiki Nakata; Stephan W. Roth, Editor(s)

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