# US 12,009,466 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 12,009,466 B2 - Document ID: US12009466B2 - Status: Granted - Kind: B2 - Application number: 17/983,239 - Filed: 2022-11-08 - Published: 2023-03-09 - Granted: 2024-06-11 - Earliest claimed: 2018-11-02 - Assignees: Seoul Viosys Co., Ltd. - Applicants: Seoul Viosys Co., Ltd. - Inventors: Seong Gyu Jang; Chan Seob Shin; Seom Geun Lee; Ho Joon Lee; Jong Hyeon Chae - Web page: https://patentgrep.com/patent/US12009466B2 ## CPC - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H 29/14: comprising multiple light-emitting semiconductor components - H10H 20/8312: {extending at least partially through the bodies} - H10H 20/852: Encapsulations - H10H 20/018: {Bonding of wafers} - H10H 20/032: {of electrodes} - H10H 20/034: {of coatings} - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A light emitting device including first, second, and third light emitting parts one over another along a first direction, a first conductive pattern at least partially disposed between the second and third light emitting parts and including a first portion extending in a second direction perpendicular to the first direction and electrically coupled with the second light emitting part, and a second portion extending from one end of the first portion, a second conductive pattern disposed on and electrically coupled to the third light emitting part, and a first passivation covering the first light emitting part and including a first portion extending in the second direction and a second portion extending from one end of the first portion and forming an inclined angle with the second direction, in which the first conductive pattern at least partially overlaps with the second portion of the first passivation. ## Claims ### Claim 1 A light emitting device comprising: a first light emitting part, a second light emitting part, and a third light emitting part disposed one over another along a first direction, each of the first, second, and third light emitting parts including a first-type semiconductor layer, an active layer, and a second-type semiconductor layer; a first conductive pattern at least partially disposed between the second and third light emitting parts, the first conductive pattern including a first portion extending in a second direction perpendicular to the first direction and electrically coupled with at least one of the first-type and second-type semiconductor layers of the second light emitting part, and a second portion extending from one end of the first portion and disposed on one surface of the second light emitting part between the second and third light emitting parts; a second conductive pattern disposed on the third light emitting part and electrically coupled with the third light emitting part; and a first passivation covering the first light emitting part, wherein: the first passivation includes a first portion extending in the second direction, and a second portion extending from one end of the first portion and forming an inclined angle with the second direction, and the first conductive pattern at least partially overlaps with the second portion of the first passivation. ### Claim 2 (depends on 1) The light emitting device according to claim 1, wherein: the second light emitting part includes a via hole passing through at least a portion of the second light emitting part and at least partially filled with an insulating material; and the first portion of the first conductive pattern is formed along the via hole. ### Claim 3 (depends on 2) The light emitting device according to claim 2, wherein: the third light emitting part includes a via hole passing through the third light emitting part; the second conductive pattern includes a first portion formed along the via hole of the third light emitting part, and a second portion extending from the first portion of the second conductive pattern onto one surface of the third light emitting part; and the second portion of the first conductive pattern and the first portion of the second conductive pattern partially overlap with each other. ### Claim 4 (depends on 1) The light emitting device according to claim 1, wherein at least a portion of the first passivation directly contacts the first conductive pattern. ### Claim 5 (depends on 1) The light emitting device according to claim 1, wherein the second conductive pattern at least partially overlaps with the second portion of the first passivation. ### Claim 6 (depends on 5) The light emitting device according to claim 5, wherein the second conductive pattern further at least partially overlaps with the first portion of the first passivation. ### Claim 7 (depends on 1) The light emitting device according to claim 1, further comprising a pad electrically coupled with the second conductive pattern. ### Claim 8 (depends on 1) The light emitting device according to claim 1, wherein the first passivation includes a plurality of openings, and at least one of the openings does not overlap the first conductive pattern. ### Claim 9 (depends on 1) The light emitting device according to claim 1, wherein the second conductive pattern at least partially overlaps with the second portion of the first conductive pattern. ### Claim 10 (depends on 1) The light emitting device according to claim 1, further comprising a second passivation disposed between the first and third light emitting parts, and a third passivation disposed on the first passivation, wherein each of the first, second, and third passivations comprise a film. ### Claim 11 A light emitting device comprising: a first light emitting part, a second light emitting part, and a third light emitting part disposed one over another along a first direction, each of the first, second, and third light emitting parts including a first-type semiconductor layer, an active layer, and a second-type semiconductor layer; a first conductive pattern at least partially disposed between the second and third light emitting parts; a second conductive pattern disposed on the third light emitting part and electrically coupled with the third light emitting part, the second conductive pattern including a first portion extending in a second direction perpendicular to the first direction and electrically coupled with at least one of the first-type and second-type semiconductor layers of the third light emitting part, and a second portion extending from one end of the first portion and forming an inclined angle with the second direction; and a first passivation covering the first light emitting part, wherein: the first passivation includes a first portion extending in the second direction, and a second portion extending from one end of the first portion and forming an inclined angle with the second direction, and the second conductive pattern at least partially overlaps with the second portion of the first passivation. ### Claim 12 (depends on 11) The light emitting device according to claim 11, wherein at least a portion of the first passivation directly contacts the first conductive pattern. ### Claim 13 (depends on 11) The light emitting device according to claim 11, wherein the second conductive pattern at least partially overlaps with the first portion of the first passivation. ### Claim 14 (depends on 11) The light emitting device according to claim 11, wherein the second conductive pattern at least partially overlaps with the first conductive pattern. ### Claim 15 (depends on 11) The light emitting device according to claim 11, wherein the first passivation includes a plurality of openings, and at least one of the openings does not overlap the first conductive pattern. ### Claim 16 A light emitting device comprising: a first light emitting part, a second light emitting part, and a third light emitting part disposed one over another along a first direction, each of the first, second, and third light emitting parts including a first-type semiconductor layer, an active layer, and a second-type semiconductor layer; a first conductive pattern at least partially disposed between the second and third light emitting parts; a second conductive pattern disposed on the third light emitting part and electrically coupled with the third light emitting part; and a first passivation covering the first light emitting part, wherein: the first passivation includes a first portion extending in a second direction perpendicular to the first direction, and a second portion extending from one end of the first portion and forming an inclined angle with the second direction, and each of the first conductive pattern and the second conductive pattern at least partially overlaps with the second portion of the first passivation. ### Claim 17 (depends on 16) The light emitting device according to claim 16, wherein at least a portion of the first passivation directly contacts the first conductive pattern. ### Claim 18 (depends on 16) The light emitting device according to claim 16, wherein the second conductive pattern at least partially overlaps with the first portion of the first passivation. ### Claim 19 (depends on 16) The light emitting device according to claim 16, wherein the first passivation includes a plurality of openings, and at least one of the openings does not overlap the first conductive pattern. ### Claim 20 (depends on 16) The light emitting device according to claim 16, wherein: each of the first and second conductive patterns includes a first portion extending in the second direction and electrically coupled with at least one of the first-type and second-type semiconductor layers of the respective ones of the second and third light emitting parts, and a second portion extending from one end of the first portion and forming an inclined angle with the second direction; and the second portions of the first and second conductive patterns do not overlap each other.