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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Article number4476071
Pages (from-to)147-152
Number of pages6
JournalIEEE/OSA Journal of Display Technology
Volume4
Issue number2
DOIs
StatePublished - 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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