DISPLAY ELEMENT AND METHOD OF DETERMINING AUTHENTICITY THEREOF, AND PRINTED MATERIAL
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United States of America Patent
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Issued Date -
Sep 12, 2019
app pub date -
May 28, 2019
filing date -
Nov 28, 2016
priority date (Note) -
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Abstract
According to a display element comprising a plurality of display areas, the display area includes a plurality of sub display areas each comprising a plurality of cells, and the display area is adapted to display, in response to one or more of the sub display areas changing an optical property to become reflective or transmissive in accordance with an orientation angle and an elevation angle of observation, different motifs in accordance with one or both of the orientation angle and the elevation angle of observation.
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