LIGHT GUIDE PLATE AND BACKLIGHT MODULE USING THE SAME
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United States of America Patent
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Issued Date -
Mar 11, 2010
app pub date -
Mar 4, 2009
filing date -
Sep 10, 2008
priority date (Note) -
Abandoned
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Abstract
A light guide plate for using in a backlight module is provided. The light guide plate has a top surface for emitting light, a back surface opposing to the top surface, and at least one light incident surface. The light incident surface in inclined by an angle β1 with respect to the back surface, whereinis the refraction index of the incident medium, and nm is the refraction index of the light guide plate. In this way, when the light enters the light guide plate from the light incident surface, it would be guided toward the lower plane, and then the diffusion dots on the lower plane would diffusively reflect the light so that the light would exit from the top surface.
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