Light-emitting devices with vertical light-extraction mechanism
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United States of America Patent
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Sep 16, 2014
Grant Date -
May 16, 2013
app pub date -
Jan 4, 2013
filing date -
Apr 16, 2010
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Abstract
A light-emitting device comprises a lattice structure to minimize the horizontal waveguide effect by reducing light traveling distance in the light-absorption medium of the light-emitting devices, and to enhance light extraction from the light-emitting layer. The lattice structure includes sidewalls and/or rods embedded in the light-absorption medium and dividing the light-absorption medium into a plurality of area units. The area units are completely isolated or partially separated from each other by the sidewalls. Also provided is a method of fabricating a light-emitting device that comprises a lattice structure, which lattice structure includes sidewalls and/or rods embedded in the light-absorption medium and dividing the light-absorption medium into a plurality of area units.
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