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US 12,571,519 B2Granted
Wavelength conversion module, light emission device, and method for manufacturing wavelength conversion module
AssigneeNichia Corporation
InventorsTeppei Kunimune, Yukihiro Hayashi, Masatsugu Ichikawa
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Abstract
A wavelength conversion module includes: a phosphor member; and a light-transmissive substrate that is directly bonded to the phosphor member, wherein a higher thermal conductivity of the light-transmissive substrate is higher than a thermal conductivity of the phosphor member, and the light-transmissive substrate has a thickness in a range from 100 μm to 600 μm.
Claims22
A wavelength conversion module comprising:
- a phosphor member that is a rare earth aluminate sintered compact having a composition represented by Formula (I) below:
- (Ln1-nCen)3(Al1-mM1m)5O12 (I)
- where Ln is at least one rare earth element selected from the group consisting of Y, La, Lu, Gd, and Tb, M1 is at least one element selected from Ga and Sc, and m and n are numbers satisfying 0≤m≤0.02 and 0.0017≤n≤0.0170;
- and
- a light-transmissive substrate that is directly bonded to the phosphor member, wherein a higher thermal conductivity of the light-transmissive substrate is higher than a thermal conductivity of the phosphor member, and the light-transmissive substrate has a thickness in a range from 100 μm to 600 μm.
2 more elements
A method for manufacturing a wavelength conversion module, the method comprising:
- directly bonding a light-transmissive plate and a phosphor plate to each other, wherein the phosphor plate is a rare earth aluminate sintered compact having a composition represented by Formula (I) below:
- (Ln1-nCen)3(Al1-mM1m)5O12 (I)
- where Ln is at least one rare earth element selected from the group consisting of Y, La, Lu, Gd, and Tb, M1 is at least one element selected from Ga and Sc, and m and n are numbers satisfying 0≤m≤0.02 and 0.0017≤n≤0.0170;
- and
- singulating the light-transmissive plate and the phosphor plate that are directly bonded to each other, to obtain a plurality of singulated bodies in each of which a singulated light-transmissive substrate and a singulated phosphor member are directly bonded, wherein:
- planar shapes of each of the light-transmissive substrates and each of the phosphor members are substantially the same as each other.
3 more elements
Dependencies are inferred from the claim text.