Light pipe for direct-type backlight and direct-type backlight
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United States of America Patent
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Jul 14, 2009
Grant Date -
Jun 8, 2006
app pub date -
Nov 1, 2005
filing date -
Nov 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a light pipe for a direct-type backlight having an upper surface and a lower surface, which has: a light reflecting member provided on the upper surface; and plural light scattering members formed concentrically on at least one surface selected from the upper surface and the lower surface, wherein each of the plural light scattering members is a circular groove or a circular projection, wherein each area between respective light scattering members is substantially the same.
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