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US 9,851,087 B2Granted
Light emitting device and lighting apparatus
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorMasashi Funakoshi
Life of this patent
Estimating the term…
Abstract
A light emitting device includes: a substrate; one or more LED (light emitting diode) elements mounted on a substrate; and a radiator unit made of metal paste and arranged on a rear surface opposite to a principal surface on which the one or more LED elements are mounted. The height Ta of the radiator unit from a rear surface is less than thickness Tb of substrate.
Claims7
A light emitting device comprising:
- a substrate;
- one or more light emitting diode (LED) elements mounted on the substrate;
- and
- a radiator unit comprising a metal paste arranged on a rear surface of the substrate opposite to a principal surface of the substrate on which the one or more LED elements are mounted,
- wherein, a height of the radiator unit from the rear surface is less than a thickness of the substrate,
- wherein the radiator unit includes a first layer which is in contact with the rear surface, and a second layer which is stacked on the first layer, and
- the metal paste of the first layer has a binder percentage content that is larger than a binder percentage content in the metal paste forming the second layer.
4 more elements
Dependencies are inferred from the claim text.