SWITCHABLE ELECTROPHORETIC LIGHT MODULATOR HAVING REDUCED APERTURE DIFFRACTION
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Jun 18, 2024
filing date -
Jun 18, 2024
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Abstract
Switchable light modulator suppresses aperture and array diffraction, reducing blurring of images viewed through films. The light modulator includes a first light-transmissive substrate, a first electrode on one side of the first light-transmissive substrate, a second light-transmissive substrate, a second electrode on one side of the second light-transmissive substrate, a light-transmissive polymeric structure between the first electrode and the second electrode, and an electro-optic medium contained in cells in the polymeric structure. The polymeric structure includes a base and a wall structure defining the cells. Each cell includes wells on the base. The wall structure includes pillar structures and linking wall elements connecting adjacent pillar structures. The pillar structures include distal surfaces parallel to the base arranged with the wells in a given pattern. Application of a driving voltage between the first and second electrodes causes the electro-optic medium to switch between a light-absorbing state and a light-transmissive state.
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