# US 2013/0154474 A1 · Light-emitting device and method of manufacturing the same

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- Number: US 2013/0154474 A1
- Document ID: US20130154474A1
- Status: Published application
- Kind: A1
- Application number: 13/705,093
- Filed: 2012-12-04
- Published: 2013-06-20
- Earliest claimed: 2011-12-14
- Assignees: Toyoda Gosei Co., Ltd.
- Inventors: Shigeo TAKEDA; Shota Yamamori; Mitsushi Terakami; Makoto Ishida
- Web page: https://patentgrep.com/patent/US20130154474A1

## CPC

- H05B 33/04: Sealing arrangements {, e.g. against humidity}
- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- H10H 20/8516: {having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer or wavelength conversion layer with a concentration gradient}
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

A method of manufacturing a light-emitting device includes placing a phosphor-containing film on a mold for compression molding, the mold having a concave portion of a predetermined shape and the film being placed along an inner wall of the concave portion, supplying a resin material on the phosphor-containing film in the concave portion, immersing a light-emitting element mounted on a substrate in the resin material in the concave portion, and applying pressure and heat to the resin material and the phosphor-containing film, thereby forming a transparent sealing resin for sealing the light-emitting element and a phosphor-containing layer covering a surface thereof.

## Claims

### Claim 1

A method of manufacturing a light-emitting device, comprising:
placing a phosphor-containing film on a mold for compression molding, the mold having a concave portion of a predetermined shape and the film being placed along an inner wall of the concave portion;
supplying a resin material on the phosphor-containing film in the concave portion;
immersing a light-emitting element mounted on a substrate in the resin material in the concave portion; and
applying pressure and heat to the resin material and the phosphor-containing film, thereby forming a transparent sealing resin for sealing the light-emitting element and a phosphor-containing layer covering a surface thereof.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the phosphor-containing film is placed so as to be in contact with the inner wall of the concave portion, and
wherein the phosphor-containing layer functions as a release film when the substrate, the light-emitting element, the transparent sealing resin and the phosphor-containing layer are released from the mold.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the phosphor-containing film comprises a concavo-convex surface on one side thereof.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the phosphor-containing film comprises a concavo-convex surface on both sides thereof.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the phosphor-containing layer is thicker at a portion on an apex of the transparent sealing resin than at a portion on a side portion of the transparent sealing resin.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the transparent sealing resin has a hemispherical shape.

### Claim 7

A light-emitting device, comprising:
a substrate;
a light-emitting element mounted on the substrate;
a transparent sealing resin for sealing the light-emitting element; and
a phosphor-containing layer that is formed on a surface of the transparent sealing resin, and comprises a transparent resin containing a phosphor and a concavo-convex surface on one side thereof,
wherein the phosphor-containing layer is thicker at a portion on an apex of the transparent sealing resin than at a portion on a side portion of the transparent sealing resin.

### Claim 8 (depends on 7)

The light-emitting device according to claim 7, wherein the phosphor-containing layer further comprises a concavo-convex surface on both sides thereof.

### Claim 9 (depends on 7)

The light-emitting device according to claim 7, wherein the transparent sealing resin has a hemispherical shape.