# US 12,009,383 B2 · Light emitting device and display device comprising partition walls between emission areas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,383 B2 - Document ID: US12009383B2 - Status: Granted - Kind: B2 - Application number: 17/277,284 - Filed: 2019-03-19 - Published: 2022-01-27 - Granted: 2024-06-11 - Earliest claimed: 2018-09-19 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Xinxing Li; Hyun Min Cho; Dae Hyun Kim; Veidhes Basrur; Bek Hyun Lim - Web page: https://patentgrep.com/patent/US12009383B2 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10H 20/831: characterised by their shape - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - 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 may include: a first emission area including a first light emitting diode: a second emission area including a second light emitting diode, at least one pair of first and second partition walls facing each other in each of the first and second emission areas at least one first electrode on the first partition wall to cover the first partition wall, and being electrically connected to a first end of at least one of the first and second light emitting diodes; and at least one second electrode on the second partition wall to cover the second partition wall, and being electrically connected to a second end of at least one of the first and second light emitting diodes. The first and second partition walls may have, in the first emission area, a structure different from that in the second emission area. ## Claims ### Claim 1 A light emitting device comprising: a first emission area comprising a first light emitting diode; a second emission area comprising a second light emitting diode; at least one pair of first and second partition walls in each of the first emission area and the second emission area, wherein the at least one pair of first and second partition walls are facing each other; at least one first electrode on a first partition wall of the at least one pair of first and second partition walls to cover the first partition wall, wherein the at least one first electrode is electrically connected to a first end of at least one of the first and second light emitting diodes; and at least one second electrode on a second partition wall of the at least one pair of first and second partition walls to cover the second partition wall, wherein the at least one second electrode is electrically connected to a second end of at least one of the first and second light emitting diodes, wherein the at least one pair of first and second partition walls have, in the first emission area, a structure different from a structure thereof in the second emission area. ### Claim 2 (depends on 1) The light emitting device according to claim 1, wherein the at least one pair of first and second partition walls are in the first emission area and are spaced apart from each other by a first distance, and wherein the at least one pair of first and second partition walls are in the second emission area and are spaced apart from each other by a second distance greater than the first distance. ### Claim 3 (depends on 2) The light emitting device according to claim 2, wherein the at least one pair of first and second partition walls are spaced apart from each other in a first direction in each of the first emission area and the second emission area, and wherein each of the first partition wall and the second partition wall extends in a second direction intersecting with the first direction. ### Claim 4 (depends on 3) The light emitting device according to claim 3, wherein the first emission area and the second emission area are successively arranged in the first direction. ### Claim 5 (depends on 3) The light emitting device according to claim 3, wherein the first emission area and the second emission area are successively arranged in the second direction. ### Claim 6 (depends on 5) The light emitting device according to claim 5, wherein each of the first partition wall and the second partition wall of the at least one pair of first and second partition walls integrally extends in the first emission area and the second emission area, and wherein at least one of the first partition wall and the second partition wall has a bent part on a boundary between the first emission area and the second emission area. ### Claim 7 (depends on 6) The light emitting device according to claim 6, wherein the bent part has a curved shape on the boundary between the first emission area and the second emission area. ### Claim 8 (depends on 1) The light emitting device according to claim 1, wherein the first partition wall and the second partition wall of the at least one pair of first and second partition walls have a symmetrical structure in each of the first emission area and the second emission area. ### Claim 9 (depends on 1) The light emitting device according to claim 1, wherein the first partition wall and the second partition wall of the at least one pair of first and second partition walls have an asymmetrical structure in at least one of the first emission area and the second emission area. ### Claim 10 (depends on 1) The light emitting device according to claim 1, wherein at least one of the first partition wall and the second partition wall has a first height in the first emission area and a second height, less than the first height, in the second emission area. ### Claim 11 (depends on 1) The light emitting device according to claim 1, wherein in the first emission area, each of the first partition wall and the second partition wall has a pattern continuously extending in a set direction, and wherein in the second emission area, each of the first partition wall and the second partition wall has a discontinuous pattern. ### Claim 12 (depends on 11) The light emitting device according to claim 11, wherein the at least one pair of first and second partition walls respectively face the first end and the second end of the first light emitting diode in the first emission area, and wherein the at least one pair of first and second partition walls respectively expose the first end and the second end of the second light emitting diode in the second emission area. ### Claim 13 (depends on 1) The light emitting device according to claim 1, wherein the at least one pair of first and second partition walls comprises: an 11-th partition wall in the first emission area; a 21-st partition wall in the first emission area and forming a pair of first and second partition walls with the 11-th partition wall; a 12-th partition wall in the second emission area; and a 22-nd partition wall in the second emission area and forming an another pair of first and second partition walls with the 12-th partition wall. ### Claim 14 (depends on 13) The light emitting device according to claim 13, wherein the at least one first electrode comprises: an 11-th electrode on the 11-th partition wall; and a 12-th electrode on the 12-th partition wall and connected to the 11-th electrode. ### Claim 15 (depends on 13) The light emitting device according to claim 13, wherein the at least one first electrode comprises: an 11-th electrode on the 11-th partition wall; and a 12-th electrode on the 12-th partition wall and separated from the 11-th electrode. ### Claim 16 (depends on 1) The light emitting device according to claim 1, wherein the at least one pair of first and second partition walls comprises: an 11-th partition wall in the first emission area; a 12-th partition wall in the second emission area; and a second common partition wall in an intersection area between the first emission area and the second emission area, the second common partition wall forming a pair of first and second partition walls with each of the 11-th partition wall and the 12-th partition wall. ### Claim 17 (depends on 1) The light emitting device according to claim 1, wherein each of the at least one first electrode and the at least one second electrode comprises at least one reflective electrode layer, and wherein the first end of the at least one of the first and second light emitting diodes faces the at least one first electrode, and the second end of the at least one of the first and second light emitting diodes faces the at least one second electrode. ### Claim 18 A display device comprising: a display area; and a pixel in the display area, wherein the pixel comprises: a first emission area comprising a first light emitting diode; a second emission area comprising a second light emitting diode; at least one pair of first and second partition walls in each of the first emission area and the second emission area, wherein the at least one pair of first and second partition walls are facing each other; at least one first electrode on a first partition wall of the at least one pair of first and second partition walls to cover the first partition wall, wherein the at least one first electrode is electrically connected to a first end of at least one of the first and second light emitting diodes; and at least one second electrode on a second partition wall of the at least one pair of first and second partition walls to cover the second partition wall, wherein the at least one second electrode is electrically connected to a second end of at least one of the first and second light emitting diodes, wherein the at least one pair of first and second partition walls have, in the first emission area, a structure different from a structure thereof in the second emission area. ### Claim 19 (depends on 18) The display device according to claim 18, wherein a height of each of the first partition wall and the second partition wall of the at least one pair of first and second partition walls or a distance between the first and second partition walls of the at least one pair of first and second partition walls in the first emission area differs from a height thereof or a distance therebetween in the second emission area. ### Claim 20 (depends on 18) The display device according to claim 18, wherein, in the first emission area, the first partition wall and the second partition wall of the at least one pair of first and second partition walls each independently have a pattern continuously extending in a set direction, and respectively face the first end and the second end of the first light emitting diode, and wherein, in the second emission area, the first partition wall and the second partition wall of the at least one pair of first and second partition walls each independently have a discontinuous pattern and expose the first and second ends of the second light emitting diode.