Planar illumination apparatus
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United States of America Patent
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Apr 30, 2019
Grant Date -
Nov 15, 2018
app pub date -
May 2, 2018
filing date -
May 11, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A planar illumination apparatus according to an embodiment includes a light guiding plate, a frame member, and an attenuation part. The light guiding plate includes a light extracting surface; and a light incident side surface on which light emitted from a light source is made incident. The light incident side surface is a side surface intersecting with the light extracting surface. The frame member including side walls are arranged to be along side surfaces other than the light incident side surface of the light guiding plate. The side walls are separated from the side surfaces. The attenuation part is arranged close to at least one of the side surfaces other than the light incident side surface to attenuate light emitted from the at least one side surface.
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