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US 2022/0069181 A1Published application
Light emitting device and method of manufacturing light emitting device
AssigneeNichia Corporation
InventorKenta MITSUYAMA
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Abstract
A light emitting device includes a package for surface mounting including a plurality of leads, three leads of the plurality of leads respectively including an exposed region exposed from the dark-colored resin at a primary surface of the package, with first to third recesses each defined in the exposed region of a respective one of the three leads; first to third light emitting elements configured to emit first to third light, respectively; and a mold resin including first to third lens portions overlapping with the first to third recesses and the first to third light emitting elements, respectively, in a plan view, and colored in a similar color as the first to third light, respectively.
Claims19
A light emitting device, comprising:
- a package for surface mounting, the package comprising a plurality of leads and a dark-colored resin securing at least some of the plurality of leads, three leads of the plurality of leads respectively including an exposed region exposed from the dark-colored resin at a primary surface of the package, with a first recess, a second recess, and a third recess each being defined in the exposed region of a respective one of the three leads;
- a plurality of light emitting elements, said plurality of light emitting elements including a first light emitting element disposed in the first recess and configured to emit first light, a second light emitting element disposed in the second recess and configured to emit second light having a wavelength shorter than a wavelength of the first light, and a third light emitting element disposed in the third recess and configured to emit third light having a wavelength shorter than a wavelength of the second light;
- and
- a mold resin sealing the plurality of light emitting elements, wherein
- the mold resin includes a base portion covering the primary surface of the package and the plurality of light emitting elements, and a plurality of lens portions formed integrally with the base portion,
- each of the plurality of lens portions has a convex shape protruding upwardly from the base portion,
- wherein in a plan view, the plurality of lens portions include a first lens portion overlapping with the first recess and the first light emitting element, a second lens portion overlapping with the second recess and the second light emitting element, and
- a third lens portion overlapping with the third recess and the third light emitting element, wherein
- the first lens portion is colored in a similar color as the first light, the second lens portion is colored in a similar color as the second light, and the third lens portion is colored in a similar color as the third light.
6 more elements
A method of manufacturing a light emitting device, the method comprising:
- providing a first structure including a package including a plurality of leads, and a plurality of light emitting elements mounted on a primary surface of the package;
- and
- forming a mold resin sealing the plurality of light emitting elements in the first structure, wherein
- the forming of the mold resin includes
- providing a casting case defining an upper cavity and a plurality of lower cavities each protruding downwardly from a base surface defining the upper cavity,
- injecting a first resin, which contains a thermosetting resin as a base material, into each of the plurality of lower cavities, such that the first resin injected into at least two of the plurality of lower cavities being colored in mutually different colors,
- semi-curing the first resin by heating the first resin at a temperature lower than a curing temperature of the first resin,
- injecting a second resin, which contains the same thermosetting resin as that of the first resin or a different thermosetting resin from that of the first resin as a base material, into the upper cavity, after semi-curing the first resin, and
- fully curing the second resin and the semi-cured first resin, in a state in which the plurality of light emitting elements and the primary surface of the package in the first structure are immersed in the second resin with each of the plurality of light emitting elements overlapping with a corresponding one of the plurality of lower cavities in a plan view, to obtain the mold resin including the base portion formed of the second resin and covering the primary surface of the package, and the plurality of lens portions formed of the first resin, the plurality of lens portions including at least two lens portions that are formed of the first resin and colored in mutually different colors.
6 more elements
Dependencies are inferred from the claim text.