LED PACKAGE WITH PHOSPHOR PLATE AND REFLECTIVE SUBSTRATE
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United States of America Patent
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app pub date -
Sep 2, 2009
filing date -
Sep 2, 2009
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Abstract
powder, by weight, is then spun over or molded over the wafer to cover the phosphor plates and the sides of the LEDs. The top surface of the reflective material is then etched using microbead blasting to expose the top of the phosphor plates and create a substantially planar reflective layer over the wafer surface. Lenses may then be formed over the LEDs. The wafer is then singulated. The reflective material reflects all side light back into the LED and phosphor plate so that virtually all light exits the top of the phosphor plate to improve the light emission characteristics.
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