# US 2021/0242275 A1 · 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 2021/0242275 A1 - Document ID: US20210242275A1 - Status: Published application - Kind: A1 - Application number: 17/302,008 - Filed: 2021-04-21 - Published: 2021-08-05 - Earliest claimed: 2017-12-22 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Takuya MIKI; Naoki MATSUDA - Web page: https://patentgrep.com/patent/US20210242275A1 ## CPC - H10H 29/10: Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 (active-matrix LED displays H10H29/30) - H10H 20/8506: {Containers} - H10H 20/851: Wavelength conversion means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/00: Package configurations - F21V 5/04: of lens shape - F21Y 2115/10: Light-emitting diodes [LED] - H10H 20/819: characterised by their shape, e.g. curved or truncated substrates - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - 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 ## Abstract A light-emitting device includes an inner light-emitting element having an n-sided polygonal shape (n is an integer of 3 or more) in a plan view with a peak emission wavelength in a range of 490 nm to 570 nm; m (m is an integer of 3 or more) outer light-emitting elements with a peak emission wavelength of 430 nm or greater and less than 490 nm; and a first phosphor with a peak emission wavelength in a range of 580 nm to 680 nm covering the inner light-emitting element and the m outer light-emitting elements. Each of n lateral surfaces of the inner light-emitting element faces a corresponding one of the m outer light-emitting elements in a top view. ## Claims ### Claim 1 A light-emitting device comprising: an inner light-emitting element having a rectangular shape in a plan view with a peak emission wavelength in a range of 490 nm to 570 nm; four outer light-emitting elements, each of the four outer light emitting elements being a light-emitting element with a peak emission wavelength of 430 nm or greater and less than 490 nm; and a first phosphor with a peak emission wavelength in a range of 580 nm to 680 nm covering the inner light-emitting element and the four outer light-emitting elements, wherein the inner light-emitting element has a first lateral surface corresponding to a longitudinal side of the rectangular shape, a second lateral surface opposite to the first lateral surface, a third lateral surface connected to the first lateral surface and the second lateral surface, the third lateral surface corresponding to a transverse direction of the rectangular shape, and a fourth lateral surface opposite to the third lateral surface, wherein the four outer light-emitting elements have a first light-emitting element having a first element lateral surface facing at least a portion of the first lateral surface, a second light-emitting element having a second element lateral surface facing at least a portion of the second lateral surface, a third light-emitting element having a third element lateral surface facing at least a portion of the third lateral surface, and a fourth light-emitting element having a fourth element lateral surface facing at least a portion of the fourth lateral surface, wherein, in a plan view, the first light-emitting element, the second light-emitting element, the third light-emitting element, the fourth light-emitting element have a rectangular shape, respectively, and each of the first element lateral surface, the second element lateral surface, the third element lateral surface, and the fourth element lateral surface defines a longitudinal side of the rectangular shape, wherein the first light-emitting element, the inner light-emitting element and the second light-emitting element are arranged in parallel with each other in a first direction, wherein the third light-emitting element, the inner light-emitting element and the fourth light-emitting element are arranged in parallel with each other in a second direction vertical to the first direction, and wherein the first light-emitting element is arranged to be spaced apart from the third light-emitting element and the fourth light-emitting element in the first direction. ### Claim 2 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction. ### Claim 3 (depends on 1) The light-emitting device according to claim 1, wherein a whole portion of the third lateral surface faces the third element lateral surface. ### Claim 4 (depends on 1) The light-emitting device according to claim 1, wherein a width of the fourth element lateral surface is larger than a width of the fourth lateral surface in the first direction. ### Claim 5 (depends on 1) The light-emitting device according to claim 1, wherein a whole portion of the fourth lateral surface faces the fourth element lateral surface. ### Claim 6 (depends on 1) The light-emitting device according to claim 1, wherein the third lateral surface and a portion of a lateral surface of the first light-emitting element are aligned with each other. ### Claim 7 (depends on 1) The light-emitting device according to claim 1, wherein the third lateral surface and a portion of a lateral surface of the second light-emitting element are aligned with each other. ### Claim 8 (depends on 1) The light-emitting device according to claim 1, further comprising a covering member on an upper surface of the inner light-emitting element. ### Claim 9 (depends on 1) The light-emitting device according to claim 1, wherein the inner light-emitting element and the four outer light-emitting elements are electrically connected in series. ### Claim 10 (depends on 1) The light-emitting device according to claim 1, further comprising a package having a recess, wherein the inner light-emitting element and the four outer light-emitting elements are disposed on a bottom surface of the recess. ### Claim 11 (depends on 1) The light-emitting device according to claim 1, wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 50% or more of the lateral surface of the inner light-emitting element. ### Claim 12 (depends on 1) The light-emitting device according to claim 1, wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 75% or more of the lateral surface of the inner light-emitting element. ### Claim 13 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, and wherein a whole portion of the third lateral surface faces the third element lateral surface. ### Claim 14 (depends on 1) The light-emitting device according to claim 1, wherein a width of the fourth element lateral surface is larger than a width of the fourth lateral surface in the first direction, and wherein a whole portion of the fourth lateral surface faces the fourth element lateral surface. ### Claim 15 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, and wherein a width of the fourth element lateral surface is larger than a width of the fourth lateral surface in the first direction. ### Claim 16 (depends on 1) The light-emitting device according to claim 1, wherein the third lateral surface and a portion of a lateral surface of the first light-emitting element are aligned with each other, and wherein the third lateral surface and a portion of a lateral surface of the second light-emitting element are aligned with each other. ### Claim 17 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, wherein a whole portion of the third lateral surface faces the third element lateral surface, and wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 50% or more of the lateral surface of the inner light-emitting element. ### Claim 18 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, wherein a whole portion of the third lateral surface faces the third element lateral surface, and wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 75% or more of the lateral surface of the inner light-emitting element. ### Claim 19 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, wherein a whole portion of the third lateral surface faces the third element lateral surface, wherein a width of the fourth element lateral surface is larger than a width of the fourth lateral surface in the first direction, and wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 50% or more of the lateral surface of the inner light-emitting element. ### Claim 20 (depends on 1) The light-emitting device according to claim 1, wherein a width of the third element lateral surface is larger than a width of the third lateral surface in the first direction, wherein a whole portion of the third lateral surface faces the third element lateral surface, wherein a width of the fourth element lateral surface is larger than a width of the fourth lateral surface in the first direction, and wherein a lateral surface of each of all the outer light-emitting elements, which faces the lateral surface of the inner light-emitting element, faces 75% or more of the lateral surface of the inner light-emitting element.