Light-emitting device and method of manufacturing the light-emitting device
AssigneeNichia Corporation
InventorsShogo Abe, Keita Shimizu, Takashi Kadota
Life of this patent
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Abstract
A light-emitting device includes: a package defining a recess; a light-emitting element mounted on surface that defines a bottom of the recess; and a sealing member disposed in the recess so as to cover the light-emitting element and made of a light-transmissive resin that contains a filler with an average particle diameter of 200 nm or more and 500 nm or less. The sealing member comprises a filler-containing layer, which contains the filler, and a light-transmissive layer that are layered in an order from a bottom side of the recess. The filler-containing layer has a thickness of equal to or larger than a height of the light-emitting element.
Claims9
A method of manufacturing a light-emitting device, the method comprising:
- providing a substrate comprising a plurality of packages, each package defining a recess;
- in each recess, mounting a light-emitting element on a surface that defines a bottom of the recess;
- into each recess, supplying an uncured sealing member, the uncured sealing member containing a light-transmissive resin and a filler in the light-transmissive resin, the filler having an average particle diameter of 200 nm or more and 500 nm or less;
- and
- applying a centrifugal force to the substrate in a direction perpendicular to the surface that defines the bottom of each recess to sediment the filler toward the bottom of each recess and thereby form a filler-containing layer, which contains the filler, and a light-transmissive layer that are layered in an order from a bottom side of each recess, wherein:
- in the step of applying the centrifugal force, the centrifugal force is 150×g or more and 300×g or less.
A light-emitting device comprising:
- a package defining a recess;
- a light-emitting element mounted on a surface that defines a bottom of the recess;
- and
- a sealing member disposed in the recess so as to cover the light-emitting element and made of a light-transmissive resin that contains a filler with an average particle diameter of 200 nm or more and 500 nm or less, wherein:
- the sealing member comprises a filler-containing layer, which contains the filler, and a light-transmissive layer that are layered in an order from a bottom side of the recess,
- the filler-containing layer has a thickness of equal to or larger than a height of the light-emitting element,
- the recess is further defined by a lateral surface having a stepped portion between the bottom of the recess and an opening of the recess, the stepped portion being formed to increase an opening area of the recess, and
- the light-transmissive layer covers the stepped portion.
Dependencies are inferred from the claim text.