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%.
© 2008 IEEE
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