HIGH REFRACTIVE INDEX STRUCTURED COATING FOR EFFICIENT LIGHT EXTRACTION FROM LEDS AND PCLEDS
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United States of America Patent
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Issued Date -
Aug 1, 2024
app pub date -
Apr 9, 2024
filing date -
Oct 19, 2021
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Abstract
This specification discloses LEDs, pcLEDs, and arrays of LEDs or pcLEDs in which the LEDs or pcLEDs comprise a structured high refractive index coating on a light output surface that improves light extraction from the device through the light output surface. The coating is formed additively instead of by a subtractive process that removes material from the surface, and consequently can avoid the disadvantages associated with subtractive processes.
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