View angle-restriction sheet and flat panel display
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United States of America Patent
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Sep 20, 2016
Grant Date -
May 14, 2015
app pub date -
Apr 22, 2013
filing date -
Apr 23, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
The view angle-restricting sheet includes an optically functional layer including: a plurality of first light transmission sections that are rectangular in cross section and arranged in a multi-stripe fashion; and one or more second light transmission section(s) that is/are each arranged between adjacent first light transmission sections. The first light transmission sections contain a light diffusing agent and a resin matrix. The proportion of the surface area occupied by the first light transmission sections with respect to the surface area of the optically functional layer is no less than 5% and no greater than 40%. The ratio (T1/W1) of the thickness (T1) to the width (W1) of the first light transmission section is preferably no less than 4 and no greater than 40. The average distance between adjacent first light transmission sections is preferably no less than 6 μm and no greater than 400 μm.
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