Optical filter for reducing color shift in a display device and method of manufacturing the same
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United States of America Patent
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Apr 22, 2014
Grant Date -
Oct 6, 2011
app pub date -
Mar 30, 2011
filing date -
Mar 31, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An optical filter for reducing color shift in a display device includes a background layer made of a light-transmitting material and a light-diffusing pattern formed over the background layer to diffuse light. The light-diffusing pattern is a thin film coating applied along the cross section of the background layer in the depth direction thereof. The light-diffusing pattern is a self-assembled thin film in which the light-diffusing particles are self-assembled. A method of manufacturing the optical filter includes forming a concave-convex pattern layer made of a first light-transmitting material and having a concave-convex pattern, and forming the light-diffusing pattern along the sidewall surface of the concave section of the concave-convex pattern. After the light-diffusing pattern is formed, the concave section is filled with a second light-transmitting material, and the light-diffusing particles are removed from the upper surface of the convex section.
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