Light emitting device and sealing material
First Claim
Patent Images
1. A light emitting device, comprising:
- a light emitting element;
a conducting portion to supply power to the light emitting element;
an element housing portion that houses the light emitting element therein; and
a sealing material that seals the light emitting element housed in the element housing portion, wherein the sealing material comprises a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material.
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Abstract
A light emitting device has: a light emitting element; a conducting portion to supply power to the light emitting element; an element housing portion that houses the light emitting element therein; and a sealing material that seals the light emitting element housed in the element housing portion. The sealing material contains a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material, and the transparent filler has a refractive index nearly equal to the transparent resin material.
89 Citations
20 Claims
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1. A light emitting device, comprising:
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a light emitting element;
a conducting portion to supply power to the light emitting element;
an element housing portion that houses the light emitting element therein; and
a sealing material that seals the light emitting element housed in the element housing portion, wherein the sealing material comprises a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 14)
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2. A light emitting device, comprising:
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a light emitting element;
a conducting portion to supply power to the light emitting element;
an element housing portion that houses the light emitting element therein; and
a sealing material that seals the light emitting element housed in the element housing portion, wherein the sealing material comprises a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material, and the transparent filler has a refractive index nearly equal to the transparent resin material.
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11. A light emitting device, comprising:
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a light emitting element;
a conducting portion to supply power to the light emitting element;
an element housing portion that houses the light emitting element therein; and
a sealing material that seals the light emitting element housed in the element housing portion, wherein the sealing material comprises a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material, and the sealing material comprises a region with a concentration of the transparent filler higher than the other region in the vicinity of the light emitting element. - View Dependent Claims (13, 15)
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12. A light emitting device, comprising:
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a light emitting element;
a conducting portion to supply power to the light emitting element;
an element housing portion that houses the light emitting element therein; and
a sealing material that seals the light emitting element housed in the element housing portion, wherein the sealing material comprises a transparent resin material and a transparent filler with a thermal expansion coefficient smaller than the transparent resin material, the transparent filler has a refractive index nearly equal to the transparent resin material, and the sealing material comprises a region with a concentration of the transparent filler higher than the other region in the vicinity of the light emitting element. - View Dependent Claims (16)
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17. A sealing material, comprising:
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a transparent resin material to seal a solid-state element; and
a transparent filler, wherein the transparent filler has a refractive index nearly equal to the transparent resin material, and the transparent filler comprises a material with a light transparency proof against light and heat generated from the solid-state element. - View Dependent Claims (18, 19, 20)
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Specification