# US 11,114,582 B2 · Display apparatus with increased self-alignment efficiency > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,582 B2 - Document ID: US11114582B2 - Status: Granted - Kind: B2 - Application number: 16/889,123 - Filed: 2020-06-01 - Published: 2020-09-17 - Granted: 2021-09-07 - Earliest claimed: 2016-07-12 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Hyunmin Cho; Daehyun Kim; Sungchul Kim; Jonghyuk Kang; Keunkyu Song; Jooyeol Lee; Hyundeok Im; Chio Cho; Hyeyong Chu; Sungjin Hong - Web page: https://patentgrep.com/patent/US11114582B2 ## CPC - H10H 20/0137: {the light-emitting regions comprising nitride materials} - H05K 1/11: Printed elements for providing electric connections to or between printed circuits - H05K 1/181: associated with surface mounted components - H10H 20/812: within the light-emitting regions, e.g. having quantum confinement structures - H10H 20/825: containing nitrogen, e.g. GaN - H10H 20/831: characterised by their shape - H10H 20/835: {Reflective materials} - 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 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - B41J 2202/09: Ink jet technology used for manufacturing optical filters - H05K 2201/10106: Light emitting diode [LED] - H10H 20/032: {of electrodes} - H10W 72/0198: {batch processes} - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A display apparatus includes a substrate, a first electrode on the substrate, the first electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, a second electrode facing the first electrode in parallel on the substrate, the second electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, and a plurality of light-emitting devices separate from each other on the first electrode and the second electrode, the light-emitting devices each having a first end contacting the upper surface of the first portion of the first electrode and a second end contacting the upper surface of the first portion of the second electrode. ## Claims ### Claim 1 A display apparatus comprising: a substrate; a first electrode on the substrate; a second electrode on the substrate and being opposite the first electrode; a plurality of light-emitting devices on the first electrode and the second electrode; a third electrode on the first electrode and contacting the first electrode; and a fourth electrode on the second electrode and contacting the second electrode, wherein each of the light-emitting devices is between the first and second electrodes and the third and fourth electrodes, and wherein one end of each of the light-emitting devices is between the first electrode and the third electrode. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising a partition wall around the first electrode and the second electrode. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein the partition wall comprises an organic material. ### Claim 4 (depends on 1) The display apparatus of claim 1, further comprising: a first electrode line connected to the first electrode; and a second electrode line connected to the second electrode. ### Claim 5 (depends on 4) The display apparatus of claim 4, further comprising a partition wall overlapping the first electrode line. ### Claim 6 (depends on 1) The display apparatus of claim 1, wherein a distance between the first electrode and the second electrode is less than a length of each of the plurality of light-emitting devices. ### Claim 7 (depends on 1) The display apparatus of claim 1, wherein two sides of each of the light-emitting devices face a part of the first electrode and a part of the second electrode, respectively. ### Claim 8 (depends on 1) The display apparatus of claim 1, further comprising a partition wall around the light-emitting devices. ### Claim 9 A display apparatus comprising: a substrate; a first electrode on the substrate; a second electrode on the substrate and being opposite the first electrode; a plurality of light-emitting devices on the first electrode and the second electrode; a third electrode on the first electrode and contacting the first electrode; a fourth electrode on the second electrode and contacting the second electrode; and a thin film transistor comprising a semiconductor layer comprising a source area and a drain area, a source electrode being connected to the source area and a drain electrode being connected to the drain area, wherein each of the light-emitting devices is between the first and second electrodes and the third and fourth electrodes. ### Claim 10 (depends on 9) The display apparatus of claim 9, wherein the source electrode or the drain electrode is connected to the first electrode or the second electrode. ### Claim 11 (depends on 9) The display apparatus of claim 9, further comprising an insulation layer between the thin film transistor and the light-emitting devices. ### Claim 12 (depends on 11) The display apparatus of claim 11, wherein the insulation layer includes a contact hole, and the first electrode or the second electrode is connected to the source electrode or the drain electrode of the thin film transistor through the contact hole. ### Claim 13 (depends on 11) The display apparatus of claim 11, wherein the insulation layer comprises an organic material. ### Claim 14 (depends on 11) The display apparatus of claim 11, wherein the insulation layer comprises an inorganic material. ### Claim 15 A display apparatus comprising: a substrate; a first electrode on the substrate; a second electrode on the substrate and being opposite the first electrode; a plurality of light-emitting devices on the first electrode and the second electrode; a third electrode on the first electrode and contacting the first electrode; and a fourth electrode on the second electrode and contacting the second electrode, wherein each of the light-emitting devices is between the first and second electrodes and the third and fourth electrodes, and wherein the third electrode and the fourth electrode are on the light-emitting devices.