# US 12,183,772 B2 · Light emitting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,772 B2 - Document ID: US12183772B2 - Status: Granted - Kind: B2 - Application number: 17/828,490 - Filed: 2022-05-31 - Published: 2022-12-01 - Granted: 2024-12-31 - Earliest claimed: 2021-05-31 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Koji Abe - Web page: https://patentgrep.com/patent/US12183772B2 ## CPC - H10H 20/8514: {characterised by their shape, e.g. plate or foil} - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10H 20/814: having reflecting means, e.g. semiconductor Bragg reflectors - H10H 20/8512: {Wavelength conversion materials} - H10H 20/853: characterised by their shape - H10H 20/854: characterised by their material, e.g. epoxy or silicone resins - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H 20/856: Reflecting means - H10H 20/882: {Scattering means (H10H20/82 takes precedence)} - H10W 90/00: Package configurations - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract Alight emitting device includes: a light emitting element; a first substrate having an upper surface comprising an element placement region on which the light emitting element is disposed; a light-transmissive member with a sheet-like shape that covers the light emitting element, wherein an outer edge of a lower surface of the light-transmissive member contacts an outer side of the upper surface of the element placement region of the first substrate; and a first protrusion portion disposed along an outer edge of an upper surface of the light-transmissive member and extending across an upper surface of the first substrate and the upper surface of the light-transmissive member, wherein the first protrusion portion comprises a top portion located higher than an upper surface of the light emitting element. ## Claims ### Claim 1 A light emitting device, comprising: a light emitting element; a first substrate having an upper surface comprising an element placement region on which the light emitting element is disposed; a light-transmissive member with a sheet-like shape that covers the light emitting element, wherein an outer edge of a lower surface of the light-transmissive member contacts an outer side of the upper surface of the element placement region of the first substrate; and a first protrusion portion disposed along an outer edge of an upper surface of the light-transmissive member and extending across an upper surface of the first substrate and the upper surface of the light-transmissive member, wherein the first protrusion portion comprises a top portion located higher than an upper surface of the light emitting element. ### Claim 2 (depends on 1) The light emitting device according to claim 1, wherein: the first protrusion portion surrounds the element placement region. ### Claim 3 (depends on 1) The light emitting device according to claim 1, wherein: the light-transmissive member has a rectangular shape in a plan view; and the first protrusion portion is disposed in a rectangular frame-like shape in the plan view. ### Claim 4 (depends on 1) The light emitting device according to claim 1, wherein: the light emitting device comprises a plurality of the light emitting elements aligned in rows in the element placement region. ### Claim 5 (depends on 1) The light emitting device according to claim 1, wherein: the light emitting device comprises a plurality of the light emitting elements arranged in a matrix pattern forming an overall rectangular shape in the element placement region. ### Claim 6 (depends on 1) The light emitting element according to claim 1, further comprising: a reflective member that covers a lateral surface of the light emitting element such that the upper surface of the light emitting element is exposed from the reflective member; and the light-transmissive member covers the light emitting element and the reflective member. ### Claim 7 (depends on 1) The light emitting device according to claim 1, wherein: the top portion of the first protrusion portion is located at a position higher than a top portion of the light-transmissive member. ### Claim 8 (depends on 1) The light emitting device according to claim 1, wherein: the first protrusion portion does not overlap with the light emitting element in a plan view. ### Claim 9 (depends on 1) The light emitting device according to claim 1, wherein: the light-transmissive member contains a phosphor. ### Claim 10 (depends on 1) The light emitting device according to claim 1, wherein: a thickness of the light-transmissive member is in a range of 20 μm to 100 μm. ### Claim 11 (depends on 1) The light emitting device according to claim 1, further comprising: a second substrate having an upper surface comprising a substrate placement region on which the first substrate is placed; a wire that connects a first terminal disposed on an upper surface outward of the element placement region of the first substrate and a second terminal disposed on the upper surface outward of the substrate placement region of the second substrate; and a covering member that covers the wire, wherein: the covering member is disposed outward of the first protrusion portion and in contact with the first protrusion portion. ### Claim 12 (depends on 11) The light emitting device according to claim 11, further comprising: a second protrusion portion disposed on the upper surface of the second substrate and in contact with the covering member, wherein: the second protrusion portion surrounds the first substrate, and the covering member is disposed between the first protrusion portion and the second protrusion portion. ### Claim 13 (depends on 10) The light emitting device according to claim 10, wherein: the covering member comprises a white resin.