# US 2023/0053397 A1 · Lighting module and lighting device having same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0053397 A1 - Document ID: US20230053397A1 - Status: Published application - Kind: A1 - Application number: 17/981,772 - Filed: 2022-11-07 - Published: 2023-02-23 - Earliest claimed: 2018-01-12 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Hoon PARK - Web page: https://patentgrep.com/patent/US20230053397A1 ## CPC - F21K 9/68: Details of reflectors forming part of the light source - G02B 6/0038: {Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide} - F21K 9/60: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction - F21S 2/00: Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction - F21S 2/005: {of modular construction} - F21S 43/28135: {Structures encapsulating the light source} - G02B 6/0083: {Details of electrical connections of light sources to drivers, circuit boards, or the like} - H10H 20/85: Packages - H10H 20/8506: {Containers} - H10H 20/854: characterised by their material, e.g. epoxy or silicone resins - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - F21Y 2115/10: Light-emitting diodes [LED] - 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 - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - 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 The lighting device disclosed in the embodiment of the invention includes a substrate including a metal layer; a plurality of light sources arranged in a first direction on the substrate; a plurality of protrusions having a length in the first direction on the metal layer; and a resin layer disposed on the plurality of light sources and the plurality of protrusions, wherein the metal layer includes a first metal layer electrically connected to the light source and a second metal layer coupled to the plurality of protrusions, and the first metal layer and the second metal layer are separated from each other, and the plurality of protrusions may be disposed to be spaced apart from each other in a second direction perpendicular to the first direction. ## Claims ### Claim 1 A lighting device comprising: a substrate; a light source disposed on the substrate; a resin layer disposed on the substrate and the light source; and a reflective pattern disposed on the substrate, wherein the light source is disposed in the resin layer and connected to the substrate, wherein the light source is a device having a light emitting diode chip, wherein an upper portion of the substrate includes a first layer of an insulating material, wherein the reflective pattern includes a plurality of protrusions, wherein each of the plurality of protrusions includes a lower portion embedded in the first layer and an upper portion protruding more than an upper surface of the first layer, wherein each of the plurality of protrusions is formed of a material different from the insulating material of the first layer, and wherein each of the plurality of protrusions has a height greater than a thickness of the first layer in a vertical direction. ### Claim 2 (depends on 1) The lighting device of claim 1, wherein the substrate includes a second layer of an insulating material, and a third layer of a metal material between the first layer and the second layer. ### Claim 3 (depends on 2) The lighting device of claim 2, wherein the third layer includes a first metal layer electrically connected to the light source and a second metal layer in which the plurality of protrusions overlaps in the vertical direction. ### Claim 4 (depends on 1) The lighting device of claim 1, wherein the plurality of protrusions is formed of a material having a higher reflectivity than that of the insulating material of the first layer. ### Claim 5 (depends on 1) The lighting device of claim 1, wherein a height difference between an upper end of at least one of the protrusions and an upper surface of the first layer is smaller than a distance between the upper surface of the first layer and the light emitting chip. ### Claim 6 (depends on 5) The lighting device of claim 5, wherein the height difference between the upper end of at least one of the protrusions and the upper surface of the first layer is in a range of 10 μm to 400 μm. ### Claim 7 (depends on 1) The lighting device of claim 1, wherein a width of at least one of the protrusions is wider than an interval between adjacent protrusions. ### Claim 8 (depends on 1) The lighting device of claim 1, wherein the reflective pattern includes a solder paste material. ### Claim 9 (depends on 1) The lighting device of claim 1, wherein the light source emits light toward the plurality of protrusions, and wherein the plurality of protrusions is arranged to be spaced apart from each other in a direction in which the light is emitted from a region adjacent to the light source. ### Claim 10 (depends on 1) The lighting device of claim 1, wherein the light source emits light in a second direction in which the plurality of protrusions is arranged, wherein each of the plurality of protrusions has a width in the second direction smaller than a length in a first direction orthogonal to the second direction. ### Claim 11 A lighting device comprising: a substrate; a light source disposed on the substrate; a resin layer disposed on the substrate and the light source; and a reflective pattern disposed on the substrate, wherein the light source is disposed in the resin layer and connected to the substrate, wherein the light source is a device having a light emitting diode chip, wherein an upper portion of the substrate includes a first layer of an insulating material, wherein the reflective pattern includes a plurality of protrusions, wherein each of the plurality of protrusions includes a lower portion embedded in the first layer and an upper portion protruding more than an upper surface of the first layer, wherein each of the plurality of protrusions is formed of a material different from the insulating material of the first layer, wherein each of the plurality of protrusions has a height greater than a thickness of the first layer, wherein the first layer is disposed around a lower portion of the light source, and wherein each of the plurality of protrusions is exposed on the first layer through the first layer. ### Claim 12 (depends on 11) The lighting device of claim 11, wherein the substrate includes a second layer of an insulating material, and a third layer of a metal material between the first layer and the second layer, and wherein the first layer and the third layer are different insulating materials. ### Claim 13 (depends on 12) The lighting device of claim 12, wherein the third layer includes a first metal layer electrically connected to the light source and a second metal layer in which the plurality of protrusions overlaps in the vertical direction, and wherein a portion of the first layer is disposed between the first and second metal layers. ### Claim 14 (depends on 13) The lighting device of claim 13, wherein the plurality of protrusions is formed of a material having a higher reflectivity than that of the insulating material of the first layer, and wherein an area of the first metal layer is smaller than an area of the second metal layer. ### Claim 15 (depends on 13) The lighting device of claim 13, wherein a height difference between an upper end of at least one of the protrusions and an upper surface of the first layer is smaller than a distance between the upper surface of the first layer and the light emitting chip. ### Claim 16 (depends on 15) The lighting device of claim 15, wherein the height difference between the upper end of at least one of the protrusions and an upper surface of the first layer is in a range of 10 μm to 400 μm. ### Claim 17 (depends on 11) The lighting device of claim 11, wherein at least one of the plurality of protrusions has a first length in a first direction and a first width in a second direction, wherein each of the plurality of protrusions is arranged to be spaced apart from each other in the second direction in which light is emitted from a region adjacent to the light source, and wherein the first width is wider than an interval between adjacent protrusions. ### Claim 18 (depends on 11) The lighting device of claim 11, wherein the reflective pattern includes a solder paste material. ### Claim 19 (depends on 11) The lighting device of claim 11, wherein the substrate includes the reflective pattern, and wherein the plurality of protrusions and the first layer are in contact with the resin layer. ### Claim 20 A lighting device comprising: a substrate; a plurality of light sources disposed on the substrate; a resin layer disposed on the substrate and the plurality of light sources; and a reflective pattern disposed on the substrate, wherein the plurality of light sources is disposed in the resin layer and connected to the substrate, wherein each of the plurality of light sources is a device having a light emitting diode chip, wherein an upper portion of the substrate includes a first layer of an insulating material, wherein the reflective pattern includes a plurality of protrusions, wherein each of the plurality of protrusions includes a lower portion embedded in the first layer and an upper portion protruding more than an upper surface of the first layer, wherein each of the plurality of protrusions is formed of a material different from the insulating material of the first layer, wherein each of the plurality of protrusions has a height greater than a thickness of the first layer, wherein the first layer is disposed around a lower portion of the plurality of light sources, wherein each of the plurality of protrusions is exposed on the first layer through the first layer, wherein each of the plurality of light sources is exposed on the first layer through the first layer, and wherein the plurality of protrusions is arranged in a direction in which light is emitted from each of the light sources.