# US 11,908,980 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 11,908,980 B2 - Document ID: US11908980B2 - Status: Granted - Kind: B2 - Application number: 17/744,361 - Filed: 2022-05-13 - Published: 2022-08-25 - Granted: 2024-02-20 - Earliest claimed: 2019-09-27 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Tadaaki Ikeda; Yukiko Yokote - Web page: https://patentgrep.com/patent/US11908980B2 ## CPC - H10H 20/8514: {characterised by their shape, e.g. plate or foil} - H10W 90/00: Package configurations - H10H 20/8506: {Containers} - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - 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 A light emitting device includes: a mounting substrate comprising a mounting substrate first surface; a first light emitting element configured to emit light having a first peak wavelength; a second light emitting element configured to emit light having a second peak wavelength longer than the first peak wavelength; a first light-transmissive member; and a first wavelength converting member located on the first light-transmissive member. ## Claims ### Claim 1 A light emitting device comprising: a mounting substrate comprising a mounting substrate first surface that extends in a first direction and in a second direction; a first light emitting element configured to emit light having a first peak wavelength, the first light emitting element comprising: a first light emitting element first surface facing the mounting substrate first surface, a first light emitting element second surface opposite the first light emitting element first surface, a first light emitting element third surface located between the first light emitting element first surface and the first light emitting element second surface, a first light emitting element fourth surface opposite the first light emitting element third surface, a first light emitting element fifth surface located between the first light emitting element first surface and the first light emitting element second surface and between the first light emitting element third surface and the first light emitting element fourth surface, and a first light emitting element sixth surface opposite the first light emitting element fifth surface; a second light emitting element configured to emit light having a second peak wavelength longer than the first peak wavelength, the second light emitting element comprising: a second light emitting element first surface facing the mounting substrate first surface, a second light emitting element second surface opposite the second light emitting element first surface, a second light emitting element third surface located between the second light emitting element first surface and the second light emitting element second surface, and facing the first light emitting element third surface, a second light emitting element fourth surface opposite the second light emitting element third surface, a second light emitting element fifth surface located between the second light emitting element first surface and the second light emitting element second surface and between the second light emitting element third surface and the second light emitting element fourth surface, the second light emitting element fifth surface being located closer to the first light emitting element fifth surface than to the first light emitting element sixth surface, and a second light emitting element sixth surface opposite the second light emitting element fifth surface; a first light-transmissive member covering at least a portion of each of the first light emitting element second surface, the first light emitting element fourth surface, the first light emitting element fifth surface, the first light emitting element sixth surface, the second light emitting element second surface, the second light emitting element fourth surface, the second light emitting element fifth surface, and the second light emitting element sixth surface; and a first wavelength converting member located on the first light-transmissive member, and covering the first light emitting element second surface and the second light emitting element second surface, wherein the first light emitting element and the second light emitting element are adjacent to each other in the first direction and are aligned in the first direction, wherein a width of the mounting substrate in the second direction is greater than a width of the mounting substrate in the first direction, wherein a width of the first light emitting element in the second direction is greater than a width of the first light emitting element in the first direction, and wherein a width of the second light emitting element in the second direction is greater than a width of the second light emitting element in the first direction. ### Claim 2 (depends on 1) The light emitting device according to claim 1, further comprising: a light-reflecting member covering the first light emitting element first surface, the first light emitting element fourth surface, the first light emitting element fifth surface, the first light emitting element sixth surface, the second light emitting element first surface, the second light emitting element fourth surface, the second light emitting element fifth surface, the second light emitting element sixth surface, the first light-transmissive member and the first wavelength converting member. ### Claim 3 (depends on 1) The light emitting device according to claim 1, wherein the width of the first light emitting element in the second direction is greater than the width of the second light emitting element in the second direction. ### Claim 4 (depends on 1) The light emitting device according to claim 1, wherein a width of the first wavelength converting member in the first direction is greater than a total of the width of the first light emitting element in the first direction and the width of the second light emitting element in the first direction. ### Claim 5 (depends on 1) The light emitting device according to claim 1, wherein the first light emitting element third surface contacts the second light emitting element third surface. ### Claim 6 (depends on 1) The light emitting device according to claim 1, wherein: the first light emitting element third surface extends in the second direction; and the second light emitting element third surface extends in the second direction. ### Claim 7 (depends on 1) The light emitting device according to claim 1, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface. ### Claim 8 (depends on 7) The light emitting device according to claim 7, wherein the mounting substrate further comprises a wiring located in the recess. ### Claim 9 (depends on 1) The light emitting device according to claim 1, wherein the first peak wavelength is in a range of 430 to 490 nm, and the second peak wavelength is in a range of 490 to 570 nm. ### Claim 10 (depends on 9) The light emitting device according to claim 9, wherein a width of the first wavelength converting member in the first direction is greater than a total of the width of the first light emitting element in the first direction and the width of the second light emitting element in the first direction. ### Claim 11 (depends on 9) The light emitting device according to claim 9, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface. ### Claim 12 (depends on 9) The light emitting device according to claim 9, further comprising: a light-reflecting member covering the first light emitting element first surface, the first light emitting element fourth surface, the first light emitting element fifth surface, the first light emitting element sixth surface, the second light emitting element first surface, the second light emitting element fourth surface, the second light emitting element fifth surface, the second light emitting element sixth surface, the first light-transmissive member and the first wavelength converting member. ### Claim 13 (depends on 12) The light emitting device according to claim 12, wherein a width of the first wavelength converting member in the first direction is greater than a total of the width of the first light emitting element in the first direction and the width of the second light emitting element in the first direction. ### Claim 14 (depends on 13) The light emitting device according to claim 13, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface. ### Claim 15 (depends on 9) The light emitting device according to claim 9, wherein the first wavelength converting member contains particles of a fluorescent material having a peak light-emission wavelength in a range of 610 to 750 nm. ### Claim 16 (depends on 15) The light emitting device according to claim 15, wherein a width of the first wavelength converting member in the first direction is greater than a total of the width of the first light emitting element in the first direction and the width of the second light emitting element in the first direction. ### Claim 17 (depends on 15) The light emitting device according to claim 15, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface. ### Claim 18 (depends on 15) The light emitting device according to claim 15, further comprising: a light-reflecting member covering the first light emitting element first surface, the first light emitting element fourth surface, the first light emitting element fifth surface, the first light emitting element sixth surface, the second light emitting element first surface, the second light emitting element fourth surface, the second light emitting element fifth surface, the second light emitting element sixth surface, the first light-transmissive member and the first wavelength converting member. ### Claim 19 (depends on 18) The light emitting device according to claim 18, wherein a width of the first wavelength converting member in the first direction is greater than a total of the width of the first light emitting element in the first direction and the width of the second light emitting element in the first direction. ### Claim 20 (depends on 19) The light emitting device according to claim 19, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface. ### Claim 21 (depends on 18) The light emitting device according to claim 18, wherein the width of the first light emitting element in the second direction is greater than the width of the second light emitting element in the second direction. ### Claim 22 (depends on 21) The light emitting device according to claim 21, wherein the mounting substrate further comprises: a mounting substrate second surface opposite the mounting substrate first surface, a mounting substrate third surface located between the mounting substrate first surface and the mounting substrate second surface, and a recess that is open at the mounting substrate second surface and the mounting substrate third surface.