Wavelength converter
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorMasahiro Nakamura
Life of this patent
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Abstract
A wavelength converter includes: a substrate portion; and an optical conversion layer including optical conversion inorganic particles and a binder portion that mutually holds the optical conversion inorganic particles, and being formed on the substrate portion, wherein the substrate portion and the binder portion bond to each other, and wherein the binder portion includes, as a main component, an inorganic polycrystalline substance composed in such a manner that inorganic material particles having an average particle size of 1 μm or less are bound to one another, and has thermal conductivity of 2 w/mK or more.
Claims10
A wavelength converter comprising:
- a substrate portion;
- and
- an optical conversion layer including optical conversion inorganic particles and a binder portion that mutually holds the optical conversion inorganic particles, and being formed on the substrate portion,
- wherein the substrate portion and the binder portion bond to each other,
- wherein the binder portion includes, as a main component, an inorganic polycrystalline substance composed in such a manner that inorganic material particles having an average particle size of 1 μm or less are bound to one another, and has thermal conductivity of 2 w/mK or more,
- wherein the inorganic polycrystalline substance includes inter-inorganic-material-particle air gaps between the inorganic material particles which constitute the inorganic polycrystalline substance, and
- wherein the binder portion further includes an in-air-gap inorganic material portion in the inter-inorganic-material-particle air gaps, the in-air-gap inorganic material portion being composed of inorganic crystal having a particle equivalent radius of 10 nm or less.
A wavelength converter comprising:
- a substrate portion;
- and
- an optical conversion layer including optical conversion inorganic particles and a binder portion that mutually holds the optical conversion inorganic particles, and being formed on the substrate portion,
- wherein the substrate portion and the binder portion bond to each other,
- wherein the binder portion includes, as a main component, an inorganic polycrystalline substance composed in such a manner that inorganic material particles having an average particle size of 1 μm or less are bound to one another, and has thermal conductivity of 2 w/mK or more,
- wherein the inorganic polycrystalline substance is a dilute-acid pressed inorganic sintered body, and
- wherein, in the substrate portion and the binder portion, the substrate portion and the dilute-acid pressed inorganic sintered body in the binder portion directly bond to each other in at least a part of an interface between the substrate portion and the binder portion.
A wavelength converter comprising:
- a substrate portion;
- and
- an optical conversion layer including optical conversion inorganic particles and a binder portion that mutually holds the optical conversion inorganic particles, and being formed on the substrate portion,
- wherein the substrate portion and the binder portion bond to each other,
- wherein the binder portion includes, as a main component, an inorganic polycrystalline substance composed in such a manner that inorganic material particles having an average particle size of 1 μm or less are bound to one another, and has thermal conductivity of 2 w/mK or more, and
- wherein the binder portion includes a metal oxide, and
- wherein the metal oxide is zinc oxide or magnesium oxide.
Dependencies are inferred from the claim text.