WAVEGUIDE STRUCTURE, BACK LIGHT UNIT INCLUDING THE SAME, AND DISPLAY APPARATUS INCLUDING THE WAVEGUIDE STRUCTURE
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United States of America
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Jan 16, 2025
app pub date -
Sep 30, 2024
filing date -
Sep 30, 2024
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Abstract
Provided is a waveguide structure including an output grating, a polarization conversion element provided parallel to the output grating, and a polarization separation element provided between the output grating and the polarization conversion element, wherein the polarization separation element is configured to transmit, to the output grating, light having a first polarization direction among light incident on the polarization separation element, and reflect, to the polarization conversion element, light having a second polarization direction different from the light having the first polarization direction among the light incident on the polarization separation element.
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