Tandem light-guides with micro-line-prism arrays for field-sequential-color scanning backlight module

Chung-Hao Tien; Yen Hsing Lu; Yuan Jung Yao

doi:10.1109/JDT.2008.917090

Tandem light-guides with micro-line-prism arrays for field-sequential-color scanning backlight module

Chung-Hao Tien^*, Yen Hsing Lu, Yuan Jung Yao

^*Corresponding author for this work

National Chiao Tung University

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

An optically partitioned backlight system consisting of tandem wedge-shaped light-guides (LGs) with micro-line-prism arrays was developed for scanning field-sequential-color (FSC) liquid crystal display (LCD) in large size. The unit of wedge-shaped LG combined with a light-emitting diode (LED) light-bar was designed and fabricated to collimate the extraction light within a narrow angular extent. Based on the edge lighting approach, the volume of backlight system can be reduced down to 25 mm without sacrifice of the optical behavior. As a result, 2750 nits average luminance subject to 50% duty cycle and 83% uniformity can be achieved. The leakages into the consecutive adjacent blocks were well suppressed to 11.86%.

Original language	English
Article number	4476071
Pages (from-to)	147-152
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	4
Issue number	2
DOIs	https://doi.org/10.1109/JDT.2008.917090
State	Published - 1 Jun 2008

Keywords

Field-sequential-color (FSC) liquid crystal display (LCD)
Micro-line-prism arrays
Scanning backlight
Tandem light-guides (LGs)

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10.1109/JDT.2008.917090

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title = "Tandem light-guides with micro-line-prism arrays for field-sequential-color scanning backlight module",

abstract = "An optically partitioned backlight system consisting of tandem wedge-shaped light-guides (LGs) with micro-line-prism arrays was developed for scanning field-sequential-color (FSC) liquid crystal display (LCD) in large size. The unit of wedge-shaped LG combined with a light-emitting diode (LED) light-bar was designed and fabricated to collimate the extraction light within a narrow angular extent. Based on the edge lighting approach, the volume of backlight system can be reduced down to 25 mm without sacrifice of the optical behavior. As a result, 2750 nits average luminance subject to 50% duty cycle and 83% uniformity can be achieved. The leakages into the consecutive adjacent blocks were well suppressed to 11.86%.",

keywords = "Field-sequential-color (FSC) liquid crystal display (LCD), Micro-line-prism arrays, Scanning backlight, Tandem light-guides (LGs)",

author = "Chung-Hao Tien and Lu, {Yen Hsing} and Yao, {Yuan Jung}",

year = "2008",

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AU - Tien, Chung-Hao

AU - Lu, Yen Hsing

AU - Yao, Yuan Jung

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