Wavelength conversion device, manufacturing method thereof, and related illumination device
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United States of America Patent
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Jun 1, 2021
Grant Date -
May 5, 2016
app pub date -
Jun 7, 2014
filing date -
Jun 8, 2013
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Abstract
A wavelength conversion device, a manufacturing method thereof, and a related illumination device. The wavelength conversion device comprises a fluorescent powder layer (110) that is successively stacked, a diffuse reflection layer (120), and a high-thermal-conductivity substrate (130). The diffuse reflection layer (120) comprises white scattered particles for scattering the incident light; the high-thermal-conductivity substrate (130) is one of an aluminum nitride substrate, a silicon nitride substrate, a silicon carbide substrate, a boron nitride substrate, and a beryllium oxide substrate. The wavelength conversion device has good reflectivity and thermal stability.
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