Direct-type backlight
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United States of America Patent
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-
Nov 6, 2007
Grant Date -
Oct 27, 2005
app pub date -
Apr 14, 2005
filing date -
Apr 21, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides A direct-type backlight having: a resin sealing member including at least one resin layer, which has a light reflecting section formed on the outermost surface of the resin sealing member; an optical semiconductor element sealed by the resin sealing member; and plural circular light scattering grooves formed concentrically on at least one surface of the resin layer, wherein an area of a circle in the center and an area among the respective concentric circles are substantially the same.
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