# US 12,000,553 B2 · Lighting device and vehicle lamp comprising same

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- Number: US 12,000,553 B2
- Document ID: US12000553B2
- Status: Granted
- Kind: B2
- Application number: 17/731,921
- Filed: 2022-04-28
- Published: 2022-08-18
- Granted: 2024-06-04
- Earliest claimed: 2019-01-24
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Hoon Park
- Web page: https://patentgrep.com/patent/US12000553B2

## CPC

- F21S 43/31: Optical layout thereof
- F21S 43/601: {characterised by variable optical properties, e.g. involving the use of LCD or movable parts}
- F21S 41/148: the main emission direction of the LED being perpendicular to the optical axis
- F21S 41/176: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
- F21S 41/20: characterised by refractors, transparent cover plates, light guides or filters
- F21S 41/2805: {Cover glass}
- F21S 43/14: Light emitting diodes [LED]
- F21S 43/145: Surface emitters, e.g. organic light emitting diodes [OLED]
- F21S 43/15: Strips of light sources
- F21S 43/19: Attachment of light sources or lamp holders
- F21S 43/26: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255}
- F21S 43/2605: {Refractors}
- F21K 9/61: using light guides
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21K 9/69: Details of refractors forming part of the light source
- F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device
- F21S 41/145: the main emission direction of the LED being opposite to the main emission direction of the illuminating device
- F21S 41/147: the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S 41/151: arranged in one or more lines
- F21S 41/153: arranged in a matrix
- F21S 41/24: Light guides
- F21S 41/255: Lenses with a front view of circular or truncated circular outline
- F21S 41/26: Elongated lenses
- F21S 41/265: Composite lenses; Lenses with a patch-like shape
- F21S 41/27: Thick lenses
- F21S 41/275: Lens surfaces, e.g. coatings or surface structures
- F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805}
- F21S 41/29: Attachment thereof (for achieving variable light distribution F21S41/63)
- F21S 41/365: successively reflecting the light
- F21S 43/16: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
- F21V 9/30: Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40)
- F21V 9/32: characterised by the arrangement of the photoluminescent material
- F21V 9/35: at focal points, e.g. of refractors, lenses, reflectors or arrays of light sources
- F21V 9/38: Combination of two or more photoluminescent elements of different materials
- F21Y 2107/90: on two opposite sides of supports or substrates
- F21Y 2109/00: Light sources with light-generating elements disposed on transparent or translucent supports or substrates
- H10H 20/0361: {of wavelength conversion means}
- H10H 20/0362: {of encapsulations}
- H10H 20/0363: {of optical field-shaping means}
- H10H 20/851: Wavelength conversion means
- H10H 20/8512: {Wavelength conversion materials}
- H10H 20/8514: {characterised by their shape, e.g. plate or foil}
- H10H 20/8515: {not being in contact with the bodies}
- 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}
- H10H 20/852: Encapsulations
- H10H 20/853: characterised by their shape
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10H 20/856: Reflecting means
- H10H 29/0361: {of wavelength conversion means}
- H10H 29/0362: {of encapsulations}
- H10H 29/0363: {of optical field-shaping means}
- H10H 29/851: Wavelength conversion means
- H10H 29/8512: {Wavelength conversion materials}
- H10H 29/8513: {having two or more wavelength conversion materials}
- H10H 29/8514: {characterised by their shape, e.g. plate or foil}
- H10H 29/8515: {not being in contact with the bodies}
- H10H 29/852: Encapsulations
- H10H 29/853: characterised by their shape
- H10H 29/855: Optical field-shaping means, e.g. lenses
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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
- 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
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

A lighting device disclosed in the embodiment of the invention includes a base member including a straight portion and a curved portion, a substrate including a first substrate disposed on the straight portion of the base member and a second substrate disposed on the curved portion; a plurality of light sources disposed on each of the first and second substrates, a resin layer including a first resin portion disposed on the first substrate and a second resin portion surrounding the second substrate, and a phosphor layer disposed on the resin layer, and an outer side surface of the second resin portion may include a curved surface.

## Claims

### Claim 1

A lighting device comprising:
a substrate;
a plurality of light sources disposed on an upper surface of the substrate;
a resin layer disposed on the upper surface of the substrate; and
a phosphor layer disposed on the resin layer;
wherein the resin layer includes a first resin portion having a constant first thickness on the upper surface of the substrate, a second resin portion having a variable second thickness on the upper surface of the substrate, and a third resin portion contact second resin portion and extending to a lower surface of the substrate, and
wherein the plurality of light sources is disposed in the first resin portion and the second resin portion of the resin layer.

### Claim 2 (depends on 1)

The lighting device of claim 1,
wherein an upper surface of the second resin portion has a curved surface.

### Claim 3 (depends on 1)

The lighting device of claim 1,
wherein a distance in a vertical direction between an upper surface of the second resin portion and the substrate has a distance shorter than a distance in the vertical direction between an upper surface of the first resin portion and the substrate.

### Claim 4 (depends on 1)

The lighting device of claim 1,
wherein an upper surface of the first resin portion has a flat surface.

### Claim 5 (depends on 1)

The lighting device of claim 1,
wherein the phosphor layer has a curved portion on the second resin portion.

### Claim 6 (depends on 1)

The lighting device of claim 1,
wherein the substrate has a first region under the first resin portion and a second region under the second resin portion, and
wherein the first region and the second region of the substrate are horizontal.

### Claim 7 (depends on 6)

The lighting device of claim 6,
wherein a vertical distance between a light source and the phosphor layer on the second region has a distance greater than a vertical distance between a light source and the phosphor layer on the first region.

### Claim 8 (depends on 1)

The lighting device of claim 1,
wherein the third resin portion is connected to the second resin portion and is spaced apart from the first resin portion.

### Claim 9 (depends on 8)

The lighting device of claim 8,
wherein a portion connected between the second resin portion and the third resin portion is disposed outside a side surface of the substrate.

### Claim 10 (depends on 8)

The lighting device of claim 8,
wherein the phosphor layer extends to a surface of the third resin portion.

### Claim 11 (depends on 1)

A vehicle lamp comprising:
a lighting module; and
a lens of a red color disposed on the lighting module,
wherein the lighting module is the lighting device of claim 1.

### Claim 12 (depends on 1)

The lighting device of claim 1, further comprising a reflective member that faces the lower surface of the substrate,
wherein the third resin portion extends between the reflective member and the lower surface of the substrate.

### Claim 13

A lighting device comprising:
a base member including a straight portion and a curved portion extending from the straight portion;
a substrate on the base member;
a plurality of light sources disposed on an upper surface of the substrate;
a resin layer disposed on the upper surface of the substrate; and
a phosphor layer disposed on the resin layer,
wherein the resin layer includes a first resin portion having a first thickness and positioned over the straight portion of the base member, and a second resin portion having a curved surface and positioned over the curved portion of the base member,
wherein the phosphor layer extends to the curved surface of the second resin portion,
wherein a thickness of the phosphor layer is smaller than a thickness of the first resin portion, and
wherein the plurality of light sources is disposed in the first resin portion and the second resin portion of the resin layer.

### Claim 14 (depends on 13)

The lighting device of claim 13,
wherein the phosphor layer extends outside a side surface of the substrate.

### Claim 15 (depends on 14)

The lighting device of claim 14,
wherein the resin layer includes a portion disposed between the phosphor layer and the side surface of the substrate.

### Claim 16 (depends on 13)

The lighting device of claim 13,
wherein the phosphor layer extends outside a lower surface of the substrate.

### Claim 17 (depends on 16)

The lighting device of claim 16,
wherein the resin layer has a third resin portion extending to one side of the lower surface of the substrate.

### Claim 18 (depends on 17)

The lighting device of claim 17,
wherein the third resin portion is connected to the second resin portion and is spaced apart from the first resin portion.

### Claim 19 (depends on 18)

The lighting device of claim 18,
wherein the phosphor layer is disposed on the third resin portion and connected to the base member.

### Claim 20 (depends on 18)

The lighting device of claim 18,
wherein the third resin portion is disposed between the one side of the lower surface of the substrate and the curved portion of the base member.