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Proceedings Paper

Strategy for developing high efficiency backlight module for LCD
Author(s): Cheng-Huan Chen; Po-Hung Yao; Chun-Ruei Yang; Po-Chou Chen; Chi-Jui Chung; Po-Chun Lin; Chien-Li Wu; Cheng-Kuo Sung; Chien-Chung Fu; Meng-Chi Huang; Han-Ping Yang; Folcon Lin; Norio Sugiura
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Paper Abstract

The major efficiency loss in current liquid crystal displays(LCD) are the absorption in polarizers and color filter, and both can be resolved with decent backlight design which takes light polarization and color separation into consideration. Those improvement schemes on the backlight normally will not trade off the image quality readily achieved in the commercial LCD. Both polarization and color separation schemes for the backlight are reviewed with categorization on the basic concept, followed by the proposal of possible combinations for both direct lit and edge lit configuration with the consideration on the availability of associated components. Two total solutions, including polarization conversion module for LED and pixelized backlight with RGB LED for direct lit and edge lit respectively, are given with demonstration of preliminary result achieved so far as the efficiency improvement schemes for LCD backlight.

Paper Details

Date Published: 6 February 2012
PDF: 8 pages
Proc. SPIE 8280, Advances in Display Technologies II, 82800J (6 February 2012); doi: 10.1117/12.908607
Show Author Affiliations
Cheng-Huan Chen, National Tsing Hua Univ. (Taiwan)
Po-Hung Yao, National Tsing Hua Univ. (Taiwan)
Chun-Ruei Yang, National Tsing Hua Univ. (Taiwan)
Po-Chou Chen, National Tsing Hua Univ. (Taiwan)
Chi-Jui Chung, National Tsing Hua Univ. (Taiwan)
Po-Chun Lin, National Tsing Hua Univ. (Taiwan)
Chien-Li Wu, National Tsing Hua Univ. (Taiwan)
Cheng-Kuo Sung, National Tsing Hua Univ. (Taiwan)
Chien-Chung Fu, National Tsing Hua Univ. (Taiwan)
Meng-Chi Huang, Industrial Technology Research Institute (Taiwan)
Han-Ping Yang, Industrial Technology Research Institute (Taiwan)
Folcon Lin, AU Optronics Corp. (Taiwan)
Norio Sugiura, AU Optronics Corp. (Taiwan)

Published in SPIE Proceedings Vol. 8280:
Advances in Display Technologies II
Liang-Chy Chien; Sin-Doo Lee; Ming Hsien Wu, Editor(s)

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