# US 11,306,879 B2 · Lighting module and lighting device comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,306,879 B2 - Document ID: US11306879B2 - Status: Granted - Kind: B2 - Application number: 17/253,711 - Filed: 2019-06-04 - Published: 2021-08-26 - Granted: 2022-04-19 - Earliest claimed: 2018-06-20 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Dong Il Eom - Web page: https://patentgrep.com/patent/US11306879B2 ## CPC - F21K 9/68: Details of reflectors forming part of the light source - H10W 90/00: Package configurations - F21K 9/69: Details of refractors forming part of the light source - 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 43/16: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element - F21S 43/31: Optical layout thereof - F21S 43/331: {Semi-transparent reflectors} - F21V 7/0083: {Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane (combination of two or more reflectors F21V7/0025)} - 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 13/08: the elements being filters or photoluminescent elements and reflectors - H10H 20/856: Reflecting means - F21S 41/337: {the reflector having a structured surface, e.g. with facets or corrugations} - F21S 43/28135: {Structures encapsulating the light source} - F21W 2106/00: Interior vehicle lighting devices - F21Y 2105/16: square or rectangular, e.g. for light panels - F21Y 2115/10: Light-emitting diodes [LED] - H10H 20/8515: {not being in contact with the bodies} - H10H 20/853: characterised by their shape - 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 - 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 - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - 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 A lighting module disclosed in the embodiment of the invention includes a substrate; a plurality of light emitting devices disposed on the substrate; a resin layer disposed on the substrate and the light emitting device; a phosphor layer disposed on the resin layer; and a recess portion overlapping the light emitting device in a vertical direction, wherein an upper surface area of the recess portion includes a range of 50% to 150% of an upper surface area of the light emitting device, and the recess portion is formed to be concave toward the upper surface of the resin layer from the light emitting device and may include an inclined side surface lower than the upper surface of the resin layer. ## Claims ### Claim 1 A lighting module comprising: a substrate; a plurality of light emitting devices disposed on the substrate, each of the light emitting devices includes an LED chip that emits light from a plurality of side surfaces and from an upper surface; a resin layer disposed on the substrate and the plurality of light emitting devices; a phosphor layer disposed on the resin layer, the phosphor layer including a top portion disposed on an upper surface of the resin layer and a plurality of side portions on all outer side surfaces of the resin layer such that the resin layer is surrounded by the plurality of side portions, wherein each of the side portions separately contacts an upper surface of the substrate; and a plurality of recess portions overlapping each of the light emitting devices in a vertical direction, wherein a total number of the plurality of recess portions is same as a total number of the light emitting devices, and an edge between two side surfaces of the recess portion corresponds to an edge between two side surfaces of the light emitting device that vertically overlap the recess portion, wherein an upper surface area of each separate one of the recess portions is within a range of 101% to 150% of an upper surface area of a separate corresponding one of the light emitting devices that is vertically overlapped by the recess portion, wherein each of the recess portions is formed to be concave toward a corresponding one of the light emitting devices on the upper surface of the resin layer and includes an inclined side surface which is lower than the upper surface of the resin layer, wherein a pitch between two of the light emitting devices is equal to or greater than a thickness of the resin layer in the vertical direction, and wherein a shortest distance between each of the light emitting devices and a corresponding one of the recess portions is within a range of 3 to 5 times a thickness of the light emitting device in the vertical direction, wherein a thickness of the top portion of the phosphor layer in the vertical direction is within a range of 15% to 25% of the thickness of the resin layer in the vertical direction. ### Claim 2 (depends on 1) The lighting module of claim 1, wherein an angle formed between a side surface of each of the recess portions and a horizontal upper surface of the resin layer is within a range of 30 degrees to 50 degrees. ### Claim 3 (depends on 1) The lighting module of claim 1, wherein each of the recess portions has an inverted cone or an inverted polygonal pyramid shape. ### Claim 4 (depends on 1) The lighting module of claim 1, wherein each of the recess portions is filled with air or comprises a material having a refractive index of 1. ### Claim 5 (depends on 1) The lighting module of claim 1, wherein each of the recess portions includes a vertex that is a lowermost point of the inclined side surface, wherein an inner angle formed by one side and the other side of each of the recess portions is 80 degrees to 120 degrees based on the vertex. ### Claim 6 (depends on 1) The lighting module of claim 1, wherein the phosphor layer includes a red phosphor, and at least one of the resin layer and the phosphor layer includes a diffusion agent. ### Claim 7 (depends on 1) The lighting module of claim 1, wherein an edge of an upper surface of each of the recess portions and an edge of an upper surface of each of the light emitting devices extend in a same direction. ### Claim 8 (depends on 1) The lighting module of claim 1, comprising a light shielding portion or a phosphor portion disposed between each of the light emitting devices and the resin layer. ### Claim 9 (depends on 1) The lighting module of claim 1, comprising a reflective member disposed between the substrate and the resin layer and disposed around each of the light emitting devices, and a height of the reflective member is lowered toward an edge from a center region between adjacent light emitting devices. ### Claim 10 (depends on 9) The lighting module of claim 9, wherein a high point of the reflective member is disposed higher than an upper surface of the light emitting device. ### Claim 11 (depends on 9) The lighting module of claim 9, wherein the reflective member is in contact with the phosphor layer disposed on the side surfaces of the resin layer. ### Claim 12 (depends on 1) The lighting module of claim 1, wherein an interval between the light emitting devices is smaller than an interval between the recess portions. ### Claim 13 (depends on 1) The lighting module of claim 1, wherein a linear distance from a lower surface of the substrate to an upper surface of the phosphor layer is in a range of 3 mm to 5 mm. ### Claim 14 (depends on 1) The lighting module of claim 1, wherein each of the plurality of recess portions is provided as an empty space between the resin layer and the phosphor layer. ### Claim 15 A lighting module comprising: a substrate; a plurality of light emitting devices disposed on the substrate, each of the light emitting devices includes an LED chip that emits light from a plurality of side surfaces and from an upper surface; a resin layer disposed on the substrate and the plurality of light emitting devices; a phosphor layer disposed on an upper surface and side surfaces of the resin layer, the phosphor layer including a top portion disposed on the upper surface of the resin layer and a plurality of side portions on the side surfaces of the resin layer such that the resin layer is surrounded by the plurality of side portions, wherein each of the side portions separately contacts an upper surface of the substrate; and a plurality of recess portions overlapping each of the plurality of light emitting devices in a vertical direction, wherein a total number of the plurality of recess portions is same as a total number of the light emitting devices, and an edge between two side surfaces of the recess portion corresponds to an edge between two side surfaces of the light emitting device that vertically overlap the recess portion, wherein the resin layer is disposed on upper side and outer side of each of the plurality of light emitting devices, wherein an upper surface area of each separate one of the plurality of recess portions is within a range of 101% to 150% of an upper surface area of a separate corresponding one of the plurality of light emitting devices that is vertically overlapped by the recess portion, wherein each of the plurality of recess portions is formed to be concave toward a corresponding one of the plurality of light emitting devices on the upper surface of the resin layer, and includes an inclined side surface which is lower than the upper surface of the resin layer, wherein a pitch between two of the light emitting devices is equal to or greater than a thickness of the resin layer in the vertical direction, wherein a shortest distance between each of the plurality of light emitting devices and a corresponding one of the plurality of recess portions is within a range of 3 to 5 times a thickness of the light emitting device in the vertical direction, and wherein a linear distance from a lower surface of the substrate to an upper surface of the phosphor layer is within a range of 3 mm to 5 mm. ### Claim 16 (depends on 15) The lighting module of claim 15, wherein each of the plurality of recess portions is an empty space between the resin layer and the phosphor layer, wherein side surface of each of the plurality of recess portions is non-contact with the phosphor layer. ### Claim 17 (depends on 15) The lighting module of claim 15, wherein an angle formed between a side surface of each of the recess portions and a horizontal upper surface of the resin layer is within a range of 30 degrees to 50 degrees, wherein each of the recess portions includes an inverted cone or an inverted polygonal pyramid shape, wherein each of the recess portions includes a vertex that is a lowest point of the inclined side surface, wherein an inner angle formed by one side and the other side of the recess portion is 80 degrees to 120 degrees based on the vertex. ### Claim 18 (depends on 15) The lighting module of claim 15, wherein an interval between the light emitting devices is smaller than an interval between the recess portions. ### Claim 19 (depends on 15) The lighting module of claim 15, wherein the phosphor layer comprises a red phosphor, and the resin layer is provided without a diffusing agent, and wherein an edge of an upper surface of each of the recess portions and an edge of an upper surface of each of the light emitting devices extends in a same direction. ### Claim 20 (depends on 15) The lighting module of claim 15, wherein a thickness of the top portion of the phosphor layer in the vertical direction is within a range of 15% to 25% of the thickness of the resin layer in the vertical direction.