# US 2021/0242376 A1 · Illumination module and illumination device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0242376 A1
- Document ID: US20210242376A1
- Status: Published application
- Kind: A1
- Application number: 17/049,127
- Filed: 2019-04-25
- Published: 2021-08-05
- Earliest claimed: 2018-05-04
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Dong II EOM
- Web page: https://patentgrep.com/patent/US20210242376A1

## CPC

- H10H 20/8515: {not being in contact with the bodies}
- F21K 9/00: Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21V 11/00: Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 (characterised by cooling arrangements F21V29/502)
- H10H 20/8513: {having two or more wavelength conversion materials}
- H10H 20/8514: {characterised by their shape, e.g. plate or foil}
- H10H 20/856: Reflecting means
- H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout}
- H10H 29/855: Optical field-shaping means, e.g. lenses
- H10W 90/00: Package configurations
- F21S 43/28135: {Structures encapsulating the light source}
- F21Y 2105/16: square or rectangular, e.g. for light panels
- F21Y 2115/10: Light-emitting diodes [LED]
- H10H 20/8511: {characterised by their material, e.g. binder}
- H10H 20/8512: {Wavelength conversion materials}
- H10H 20/852: Encapsulations
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

An illumination device disclosed in an embodiment of the invention includes a substrate, a plurality of light emitting elements disposed on the substrate, a resin layer disposed on the plurality of light emitting elements, a first phosphor layer disposed on an upper surface of the resin layer, and a plurality of second phosphor layers disposed on side surfaces of the resin layer, and a first light blocking layer disposed between the first phosphor layer and the second phosphor layer. The first phosphor layer and the second phosphor layer may have different colors.

## Claims

### Claim 1

A illumination device comprising:
a substrate;
a plurality of light emitting devices disposed on the substrate;
a resin layer surrounding the plurality of light emitting devices;
a first phosphor layer disposed on an upper surface of the resin layer;
a second phosphor disposed on a side surface of the resin layer; and
a light blocking layer disposed between the first phosphor layer and the second phosphor layer,
wherein the first phosphor layer and the second phosphor layer have different colors,
wherein the first phosphor layer overlaps the plurality of light emitting devices in vertical direction,
wherein the resin layer is disposed between the plurality of light emitting devices and the first phosphor layer, between side surfaces of the plurality of light emitting devices, and between an outermost light emitting devices of the plurality of light emitting devices and the second phosphor layer.

### Claim 2 (depends on 1)

The illumination device of claim 1, wherein the light blocking layer is disposed on a side surface of the first phosphor layer and an upper surface of the second phosphor layer
wherein the second phosphor layer is disposed higher than upper surfaces of the light emitting devices, and
wherein the light blocking layer is disposed on the upper surface of the second phosphor layer.

### Claim 3 (depends on 2)

The illumination device of claim 2, wherein a width of the light blocking layer is a same as a width of the second phosphor layer, and
wherein the light blocking layer has the same thickness as a thickness of the first phosphor layer.

### Claim 4 (depends on 2)

The illumination device of claim 2, wherein a width of the light blocking layer is greater than a width of the second phosphor layer,
wherein the thickness of the light blocking layer is the same as a thickness of the first phosphor layer, and
wherein a part of the light blocking layer overlaps the resin layer in a vertical direction.

### Claim 5 (depends on 2)

The illumination device of claim 2, wherein a width of the light blocking layer is greater than a width of the second phosphor layer,
wherein a thickness of the light blocking layer is thicker than a thickness of the first phosphor layer, and
wherein the light blocking layer overlaps the resin layer in a vertical direction and a horizontal direction.

### Claim 6 (depends on 1)

The illumination device of claim 1, wherein the light blocking layer is disposed on a lower surface of the first phosphor layer and an upper surface of the second phosphor layer, and
wherein the light blocking layer overlaps the resin layer in a horizontal direction.

### Claim 7 (depends on 6)

The illumination device of claim 6, wherein the first phosphor layer comprises a first region disposed on the upper surface of the resin layer, and a second region extending from the first region to the side surface of the resin layer, and
wherein the light blocking layer is disposed on a lower surface of the second region and the upper surface of the second phosphor layer.

### Claim 8 (depends on 1)

The illumination device of claim 1, wherein the light blocking layer is disposed on a side surface of the first phosphor layer and an inner side surface of the second phosphor layer, and
wherein the light blocking layer overlaps the resin layer in a vertical direction.

### Claim 9 (depends on 1)

The illumination device of claim 1, wherein the second phosphor layer includes a plurality of second phosphors emitting light of different colors and disposed on each of side surfaces of the resin layer,
wherein the light blocking layer surrounds on a periphery of a side surface of the first phosphor layer and a periphery of an upper surface of the second phosphor layer, and
wherein the light blocking layer is disposed higher than the upper surface of the resin layer.

### Claim 10 (depends on 1)

The illumination device of claim 1,
wherein the second phosphor layer includes a plurality of second phosphors disposed on each of side surfaces of the resin layer,
wherein the light blocking layer include a first light blocking portion disposed on a side surface of the first phosphor layer and an upper surface of each of the second phosphor layers; and a plurality of second light blocking portions respectively disposed between the plurality of second phosphor layers, and
wherein each of the second light blocking portions passes between the second phosphor layers from the first light blocking portion and extends toward the substrate.

### Claim 11 (depends on 10)

The illumination device of claim 10, wherein each of the plurality of second light blocking portions is respectively disposed at edges of the resin layer,
wherein the second light blocking portions are disposed on both sides of each of the second phosphor layers at each of the edges of the resin layer, and
wherein the plurality of second phosphor layers have different colors and have the same number as a number of side surfaces of the resin layer.

### Claim 12 (depends on 1)

The illumination device of claim 1, wherein the light blocking layer includes a silicon material, film, or ink that reflects or absorbs light, and is formed with a constant thickness on an upper surface of the second phosphor layer.

### Claim 13

A illumination device comprising:
a substrate;
a plurality of light emitting devices disposed on the substrate;
a resin layer disposed on the light emitting device;
a first phosphor layer disposed on the resin layer;
a second phosphor layer disposed on a side surface of the resin layer; and
a light blocking layer disposed between the first phosphor layer and the second phosphor layer,
wherein the light blocking layer at least partially overlaps with the second phosphor layer in a vertical direction, and at least partially overlaps the first phosphor layer in a horizontal direction,
wherein the first phosphor layer overlaps the plurality of light emitting devices in a vertical direction,
wherein the resin layer is disposed between the plurality of light emitting devices and the first phosphor layer, between side surfaces of the plurality of light emitting devices and between an outermost light emitting devices of the plurality of light emitting devices and the second phosphor layer.

### Claim 14 (depends on 13)

The illumination device of claim 13, wherein the second phosphor layer is disposed to surround the resin layer.

### Claim 15 (depends on 13)

The illumination device of claim 13, wherein the second phosphor layer is disposed on the substrate.

### Claim 16 (depends on 13)

The illumination device of claim 13, wherein the light blocking layer has an open region therein, and
wherein the first phosphor layer is disposed in the open region of the light blocking layer.

### Claim 17 (depends on 16)

The illumination device of claim 16, wherein the second phosphor layer is disposed between the light blocking layer and the substrate.

### Claim 18 (depends on 17)

The illumination device of claim 17, wherein an upper surface of the light blocking layer is disposed in a same horizontal surface as an upper surface of the first phosphor layer,
wherein an outer side surface of the light blocking layer is disposed on in a same vertical surface as an outer side surface of the second phosphor layer.

### Claim 19 (depends on 13)

The illumination device of claim 13, comprising:
a reflective layer disposed between the substrate and the resin layer,
wherein the reflective layer is in contact with the resin layer and the second phosphor layer.

### Claim 20 (depends on 13)

The illumination device of claim 13, wherein the light blocking layer is disposed on all side surfaces of the first phosphor layer and an entire upper surface of the second phosphor layer.