Illumination – Display backlight
Reexamination Certificate
2011-04-26
2011-04-26
Cariaso, Alan (Department: 2885)
Illumination
Display backlight
C362S224000, C362S245000, C362S311060
Reexamination Certificate
active
07931383
ABSTRACT:
An illumination device is provided on a backside of a display panel so as to irradiate a display panel with light, the illumination device including a plurality of rod-like light sources arranged in a planar configuration such that they do not cross each other, and columnar members being respectively provided adjacent to the rod-like light sources, each columnar member including a light incidence plane through which light emitted from a longitudinal direction of the rod-like light sources enters, a first light exit plane arranged to emit the incoming light from the light incidence plane toward the display panel, and a first light reflecting plane arranged to reflect the incoming light from the light incidence plane to the light exit plane. Therefore, with the illumination device applied as a direct backlight, it is possible to reduce luminance unevenness in both a front direction and oblique directions sufficiently, so as to reduce the luminance unevenness of the backlight sufficiently, as a whole.
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Official Communication issued in corresponding Chinese Patent Application No. 200680050503.3, mailed on Sep. 18, 2009.
Cariaso Alan
Keating & Bennett LLP
Sharp Kabushiki Kaisha
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