Method and hardware to enhance light out-coupling
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United States of America Patent
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Jun 21, 2016
Grant Date -
Jan 1, 2015
app pub date -
May 7, 2014
filing date -
Jun 26, 2013
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Abstract
The present invention provides an enhanced light out-coupling device for extraction of light radiation from a light source. The enhanced light out-coupling device comprises a grid having a plurality of channels, a reflective material layer coated on the grid, and a high refractive index fluid layer. In addition, the grid can be filled with phosphor particles for light converting. The device of the presently claimed invention is able to effectively avoid the scattering problem generated from the sapphire substrate and phosphor particles, as well as reduce light adsorption by the array of grid during the light extraction, leading to better image quality.
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