Backlight asymmetric light input wedge
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United States of America Patent
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May 10, 2011
Grant Date -
Nov 5, 2009
app pub date -
Jul 8, 2009
filing date -
May 24, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.
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