FRONTLIGHT DIFFUSER WITH INTEGRATED BLACK MASK
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United States of America Patent
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Issued Date -
Jun 18, 2015
app pub date -
Dec 18, 2013
filing date -
Dec 18, 2013
priority date (Note) -
Abandoned
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Abstract
This disclosure provides systems, methods and apparatus for diffusing light in a display device, such as a reflective display device. In one aspect, the display can include an array of display elements and an optical diffuser forward of the array. The diffuser can include an optically transmissive filler material and a plurality of spaced-apart protrusions extending into the filler material. The protrusions can have varying heights. In some portions of the diffuser, the protrusions may be formed of optically transmissive material, to provide diffusion. In some other portions, the protrusions may be formed of light absorbing material to form a black mask in those sections.
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