LIGHT EMITTING DIODE DISPLAY WITH A MONOLITHIC WIRE-GRID POLARIZER FOR PRODUCING THREE-DIMENSIONAL IMAGES
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United States of America
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Feb 6, 2020
app pub date -
Aug 2, 2018
filing date -
Aug 2, 2018
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Abstract
A light emitting diode (LED) display is provided, including an array of LEDs comprising a first set of LEDs, and a second set of LEDs, alternating with the first set of LEDs, in a grid pattern. A driver drives the first and second set of LEDs according to, respectively, a first and second image. The display further includes a monolithic wire-grid polarizer, in front of the array, comprising first and second regions configured to respectively polarize light from the first and second set of LEDs, according to, respectively, a first linear polarization state and a second linear polarization state perpendicular to the first linear polarization state. The first and second regions are respectively aligned with the first and second sets of LEDs. A quarter-wave retarder is located in front of the wire-grid polarizer, for converting the first and second linear polarization states into respective circular polarization states.
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