Light-emitting diode
AssigneeCitizen Electronics Co., Ltd.
InventorKazuya Ishihara
Life of this patent
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Abstract
A light-emitting diode includes: a light-transmitting substrate; a light-emitting element mounted on the upper surface of the light-transmitting substrate; and a light-transmitting resin that seals the light-emitting element. The outer surface of the light-transmitting resin is covered with a reflecting layer formed from a silver or aluminum thin film. The light emitted from the light-emitting element is reflected from the reflecting layer, and the reflected light is guided out from the lower surface of the light-transmitting substrate in an efficient manner with minimum wastage of light intensity, and thus, high luminance light can be emitted.
Claims5
A light-emitting diode, comprising:
- a light-transmitting substrate;
- a light-emitting element mounted on an upper surface of the light-transmitting substrate and electrically connected to the light-transmitting substrate;
- a light-transmitting resin that seals the light-emitting element on the upper surface of the light-transmitting substrate;
- and
- a reflecting layer covering an entire outer surface of the light-transmitting resin,
- wherein the light-transmitting substrate has a recess on a lower surface thereof, the recess has a curved concave surface that is recessed deeper at a central position thereof, and the recess is filled with a resin containing at least one of a light scattering agent and a fluorescent agent.
Dependencies are inferred from the claim text.