# US 10,119,671 B2 · Light emitting device and vehicular lamp including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,671 B2 - Document ID: US10119671B2 - Status: Granted - Kind: B2 - Application number: 15/577,288 - Filed: 2016-05-24 - Published: 2018-05-31 - Granted: 2018-11-06 - Earliest claimed: 2015-05-26 - Assignees: Seoul Semiconductor Co., Ltd. - Applicants: Seoul Semiconductor Co., Ltd. - Inventors: Yang Sik Cho; Yoon Seop Lee; Dae Wook Kim; Da Hye Kim - Web page: https://patentgrep.com/patent/US10119671B2 ## CPC - F21S 41/141: Light emitting diodes [LED] - B60Q 1/18: being additional front lights {(bracket mounted headlights B60Q1/0483)} - B60Q 1/2607: {comprising at least two indicating lamps} - B60Q 1/34: for indicating change of drive direction (B60Q1/22 takes precedence) - F21S 41/192: {Details of lamp holders, terminals or connectors} - F21S 43/14: Light emitting diodes [LED] - F21S 43/195: {Details of lamp holders, terminals or connectors} - H10H 29/14: comprising multiple light-emitting semiconductor components - F21K 9/20: Light sources comprising attachment means - F21S 43/145: Surface emitters, e.g. organic light emitting diodes [OLED] - F21S 45/10: Protection of lighting devices (cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50) - F21Y 2115/10: Light-emitting diodes [LED] - H10D 89/60: Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] - H10H 20/851: Wavelength conversion means - H10H 20/8512: {Wavelength conversion materials} - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H 20/8585: {being an interconnection} - H10H 20/882: {Scattering means (H10H20/82 takes precedence)} - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - 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 - 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 - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract The present disclosure relates to a light-emitting device and a vehicular lamp including the same. The light-emitting device may include a light-emitting unit and a sidewall. The light emitting unit may include a light-emitting element. The sidewall may surround a side of the light-emitting unit and adjoin the side of the light-emitting unit. The light-emitting element may include at least two light-emitting cells grown on a single growth substrate and may be electrically connected to one another. ## Claims ### Claim 1 A vehicular lamp comprising: a combination lamp; and a main lamp, wherein at least one of the combination lamp and the main lamp comprises: a light emitting unit; a sidewall surrounding a side surface of the light emitting unit and adjoining the side surface thereof; and a substrate disposed at a lower side of the light emitting unit and supporting the light emitting unit and the sidewall, wherein the light emitting unit comprises: a light emitting element comprising at least two light emitting cells; a wavelength converter disposed on the light emitting element and covering at least part of an upper surface of the light emitting element; a first pad electrode electrically connected to at least one of the light emitting cells; and a second pad electrode electrically connected to the other light emitting cell, wherein the sidewall has a protruding portion formed at an edge thereof, wherein the substrate comprises a base and first and second electrodes electrically connected to an external electrode to supply electric power to the light emitting unit, the first electrode and the second electrode being at least partially exposed, wherein the at least two light emitting cells are electrically connected to each other and each comprise an n-type semiconductor layer, a p-type semiconductor layer, and an active layer interposed between the n-type semiconductor layer and the p-type semiconductor layer. ### Claim 2 (depends on 1) The vehicular lamp according to claim 1, wherein the combination lamp has at least two functions. ### Claim 3 (depends on 2) The vehicular lamp according to claim 2, wherein the combination lamp acts as a daytime running light and a turn signal light. ### Claim 4 (depends on 1) The vehicular lamp according to claim 1, wherein the main lamp is a headlight. ### Claim 5 (depends on 1) The vehicular lamp according to claim 1, wherein the sidewall has an inclination gradually increasing from an inner side thereof to the protruding portion thereof. ### Claim 6 (depends on 1) The vehicular lamp according to claim 1, wherein the wavelength converter has the same area as the upper surface of the light emitting element. ### Claim 7 (depends on 1) The vehicular lamp according to claim 1, wherein a side surface of the wavelength converter is flush with a side surface of the light emitting element. ### Claim 8 (depends on 1) The vehicular lamp according to claim 1, wherein the light emitting element comprises first to fourth light emitting cells, the first to fourth light emitting cells being electrically connected to each other in series. ### Claim 9 (depends on 8) The vehicular lamp according to claim 8, wherein the n-type semiconductor layer of the first light emitting cell is electrically connected to the first pad electrode. ### Claim 10 (depends on 8) The vehicular lamp according to claim 8, wherein the p-type semiconductor layer of the fourth light emitting cell is electrically connected to the second pad electrode. ### Claim 11 (depends on 9) The vehicular lamp according to claim 9, wherein a heat dissipation pad is further disposed between the first and second pad electrodes so as to be electrically insulated from the first and second pad electrodes. ### Claim 12 (depends on 10) The vehicular lamp according to claim 10, wherein a heat dissipation pad is further disposed between the first and second pad electrodes so as to be electrically insulated from the first and second pad electrodes. ### Claim 13 (depends on 11) The vehicular lamp according to claim 11, wherein the heat dissipation pad partially covers the first and fourth light emitting cells. ### Claim 14 (depends on 13) The vehicular lamp according to claim 13, wherein the heat dissipation pad covers the entirety of the second and third light emitting cells. ### Claim 15 (depends on 1) The vehicular lamp according to claim 1, wherein a heat dissipation pad is further disposed between the first and second pad electrodes so as to be electrically insulated from the first and second pad electrodes. ### Claim 16 (depends on 1) The vehicular lamp according to claim 1, wherein the light emitting cells are electrically connected to each other via a connection electrode. ### Claim 17 (depends on 16) The vehicular lamp according to claim 16, wherein the connection electrode is electrically connected to the light emitting cells through a hole formed in an insulation layer insulating the light emitting cells from each other. ### Claim 18 (depends on 1) The vehicular lamp according to claim 1, wherein the base is formed with grooves, and the first and second electrodes are formed in the grooves, respectively. ### Claim 19 (depends on 18) The vehicular lamp according to claim 18, wherein the base partially protrudes to contact a lower surface of the light emitting unit.