# US 12,604,578 B2 · Light-emitting device and method of manufacturing the 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 12,604,578 B2 - Document ID: US12604578B2 - Status: Granted - Kind: B2 - Application number: 17/673,572 - Filed: 2022-02-16 - Published: 2022-08-18 - Granted: 2026-04-14 - Earliest claimed: 2021-02-18 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Hiroaki Ukawa; Noriaki Akita - Web page: https://patentgrep.com/patent/US12604578B2 ## CPC - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/00: Package configurations - H10H 20/036: {of packages} - H10H 20/0363: {of optical field-shaping means} - H10H 20/0364: {of interconnections} - H10H 20/8506: {Containers} - 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 method of manufacturing a light-emitting device, including: disposing a light-emitting part on a first electrically conductive wiring, and electrically connecting the light-emitting part with the first electrically conductive wiring and with a second electrically conductive wiring via wires; providing a mask member including a mask part including a first covering part to be located above the light-emitting part, and a second covering part connected to the first part and to be located around lateral sides of the light-emitting part, the second covering part defining grooves to allow the wires to pass through; disposing the mask member on the electrically conductive wiring; disposing a resin material to at least partially cover the mask member, the first electrically conductive wiring, and the second electrically conductive wiring; and removing the mask member to obtain a resin member having lateral walls surrounding the light-emitting part. ## Claims ### Claim 1 A method of manufacturing a light-emitting device, the method comprising: providing an electrically conductive wiring including a first electrically conductive wiring and a second electrically conductive wiring; disposing a light-emitting part including at least one light-emitting element on the first electrically conductive wiring, and electrically connecting the light-emitting part with the first electrically conductive wiring and with the second electrically conductive wiring via wires; providing a mask member, the mask member including a mask part including a first covering part to be located above the light-emitting part, and a second covering part connected to the first covering part and to be located around lateral sides of the light-emitting part, with the second covering part being spaced apart from lateral surfaces of the light-emitting part so as not to be in contact with the lateral surfaces of the light-emitting part, a plurality of grooves being formed in the second covering part to allow the wires to pass through respectively, from the light-emitting part to an upper surface of the first electrically conductive wiring and from the light-emitting part to an upper surface of the second electrically conductive wiring; disposing the mask member on the electrically conductive wiring so that the mask member covers the light-emitting part; disposing a resin material to at least partially cover outer surfaces of the mask member, the first electrically conductive wiring, and the second electrically conductive wiring; and removing the mask member to obtain a resin member having lateral walls surrounding the light-emitting part. ### Claim 2 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the disposing of the resin material includes disposing the resin material by a printing method. ### Claim 3 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the disposing of the resin material includes disposing the resin material to a height such that an upper surface of the first covering part of the mask member and an upper surface of the resin material are flush with each other. ### Claim 4 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the disposing of the resin material includes disposing the resin material to at least partially fill at least a portion of each of the grooves to cover a portion of each of the wires passing through each of the grooves. ### Claim 5 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, further comprising curing the resin material before the removing of the mask member. ### Claim 6 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the disposing of the mask member includes disposing the mask member on the electrically conductive wiring such that at least one of the grooves formed in the second covering part is facing the second electrically conductive wiring, and the disposing of the resin material includes disposing the resin material in a first direction from the first electrically conductive wiring toward the second electrically conductive wiring or in a direction opposite to the first direction in a plan view. ### Claim 7 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the disposing of the resin material includes disposing the resin material that is a light-reflecting resin material containing a light-reflecting material. ### Claim 8 (depends on 1) The method of manufacturing the light-emitting device according to claim 1, wherein the providing of the electrically conductive wiring includes providing the electrically conductive wiring having an alternating array of the first electrically conductive wiring and the second electrically conductive wiring, and the providing of the mask member includes providing the mask member having a plurality of additional mask parts, with adjacent ones of the mask part and the additional mask parts being connected via a connecting part. ### Claim 9 (depends on 8) The method of manufacturing the light-emitting device according to claim 8, wherein the providing of the mask member includes providing the mask member with a frame part to be disposed between respective sets of one of the first electrically conductive wiring and an adjacent one of the second electrically conductive wiring. ### Claim 10 (depends on 9) The method of manufacturing the light-emitting device according to claim 9, further comprising after the removing of the mask member, dividing a portion of the electrically conductive wiring at locations where the frame part had been placed. ### Claim 11 A method of manufacturing a light-emitting device, the method comprising: providing an electrically conductive wiring including a first electrically conductive wiring and a second electrically conductive wiring; disposing a light-emitting part including at least one light-emitting element on the first electrically conductive wiring, and electrically connecting the light-emitting part with the first electrically conductive wiring and with the second electrically conductive wiring via wires; providing a mask member, the mask member including a mask part including a first covering part to be located above the light-emitting part, and a second covering part connected to the first covering part and to be located around lateral sides of the light-emitting part, a plurality of grooves being formed in the second covering part to allow the wires to pass through respectively, from the light-emitting part to an upper surface of the first electrically conductive wiring and from the light-emitting part to an upper surface of the second electrically conductive wiring; disposing the mask member on the electrically conductive wiring so that the mask member covers the light-emitting part; disposing a resin material to at least partially cover outer surfaces of the mask member, the first electrically conductive wiring, and the second electrically conductive wiring; and removing the mask member to obtain a resin member having lateral walls surrounding the light-emitting part, wherein the disposing of the resin material includes disposing the resin material to a height such that an upper surface of the first covering part of the mask member and an upper surface of the resin material are flush with each other. ### Claim 12 A method of manufacturing a light-emitting device, the method comprising: providing an electrically conductive wiring including a first electrically conductive wiring and a second electrically conductive wiring; disposing a light-emitting part including at least one light-emitting element on the first electrically conductive wiring, and electrically connecting the light-emitting part with the first electrically conductive wiring and with the second electrically conductive wiring via wires; providing a mask member, the mask member including a mask part including a first covering part to be located above the light-emitting part, and a second covering part connected to the first covering part and to be located around lateral sides of the light-emitting part, a plurality of grooves being formed in the second covering part to allow the wires to pass through respectively, from the light-emitting part to an upper surface of the first electrically conductive wiring and from the light-emitting part to an upper surface of the second electrically conductive wiring; disposing the mask member on the electrically conductive wiring so that the mask member covers the light-emitting part; disposing a resin material to at least partially cover outer surfaces of the mask member, the first electrically conductive wiring, and the second electrically conductive wiring; and removing the mask member to obtain a resin member having lateral walls surrounding the light-emitting part, wherein the disposing of the resin material includes disposing the resin material to at least partially fill at least a portion of each of the grooves to cover a portion of each of the wires passing through each of the grooves.