Wavelength conversion member and light emitting device using the same
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United States of America Patent
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Mar 28, 2017
Issued Date -
N/A
app pub date -
Feb 6, 2015
filing date -
Feb 6, 2014
priority date (Note) -
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Abstract
A light emitting device can include a wavelength conversion member with a high light extraction efficiency and capable of achieving a light emitting device with high performance. The wavelength conversion member can include phosphor particles formed from a base material and an activator agent added thereto and having an irregular surface; a matrix material including a light-transmitting material, the matrix material being present between the phosphor particles; and additive particles formed from the base material and adhering to the irregular surface of the phosphor particle to form a particle structure having an irregular surface including a projected section and a recessed section. The difference between the projected section and the recessed section of the irregular surface of the particle structure is larger than the difference between a projected section and a recessed section of the irregular surface of the phosphor particle without the additive particles adhering thereto.
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