# US 12,224,384 B2 · Display device and manufacturing method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,384 B2 - Document ID: US12224384B2 - Status: Granted - Kind: B2 - Application number: 17/618,166 - Filed: 2020-03-11 - Published: 2022-10-13 - Granted: 2025-02-11 - Earliest claimed: 2019-06-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Moon Jung An; Dong Eon Lee - Web page: https://patentgrep.com/patent/US12224384B2 ## CPC - H10H 20/853: characterised by their shape - H10H 20/013: {having light-emitting regions comprising only Group III-V materials} - H10H 20/813: having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies - H10H 20/818: within the light-emitting regions - H10H 20/8511: {characterised by their material, e.g. binder} - H10W 90/00: Package configurations - H10H 20/0361: {of wavelength conversion means} - H10H 20/0362: {of encapsulations} - H10H 20/819: characterised by their shape, e.g. curved or truncated substrates - H10H 20/825: containing nitrogen, e.g. GaN - H10H 20/831: characterised by their shape - H10H 20/854: characterised by their material, e.g. epoxy or silicone resins - H10H 20/856: Reflecting means - H10H 20/882: {Scattering means (H10H20/82 takes precedence)} - H10W 70/60: Insulating or insulated package substrates; Interposers; Redistribution layers (leadframes H10W70/40) - H10W 70/654: Top-view layouts - H10W 72/0198: {batch processes} - H10W 90/22: the stacked chips being on both top and bottom sides of a package substrate, interposer or RDL - 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 display device may include a light emitting element including a first end having a first surface, and a second end having a second surface parallel to the first surface, an organic pattern that overlaps the light emitting element and exposes the first and second surfaces, a first electrode disposed on a substrate and electrically contacting the first end, and a second electrode disposed on the substrate and spaced apart from the first electrode, and electrically contacting the second end. A surface area of the first surface may be less than that of the second surface. A top surface of the organic pattern may be a curved surface. ## Claims ### Claim 1 A display device comprising: a light emitting element disposed on a substrate, and comprising: a first end including a first surface; and a second end including a second surface parallel to the first surface; an organic pattern that overlaps the light emitting element and exposes the first surface and the second surface; a first electrode disposed on the substrate and electrically contacting the first end; and a second electrode disposed on the substrate and spaced apart from the first electrode, and electrically contacting the second end, wherein a surface area of the first surface is less than a surface area of the second surface, and a top surface of the organic pattern is a curved surface. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the top surface of the organic pattern is a convex surface protruding in a thickness direction of the substrate. ### Claim 3 (depends on 1) The display device according to claim 1, further comprising: scattering particles dispersed in the organic pattern, wherein the scattering particles include at least one of titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), and tin oxide (SnO2). ### Claim 4 (depends on 1) The display device according to claim 1, further comprising: wavelength conversion particles dispersed in the organic pattern, wherein the wavelength conversion particles include quantum dots. ### Claim 5 (depends on 1) The display device according to claim 1, further comprising a first reflective pattern disposed adjacent to the first surface, and a second reflective pattern disposed adjacent to the second surface. ### Claim 6 (depends on 5) The display device according to claim 5, wherein the first reflective pattern comprises; a first bank disposed on the substrate; and a first reflective layer disposed along a surface of the first bank, and the second reflective pattern comprises: a second bank disposed on the substrate; and a second reflective layer disposed along a surface of the second bank. ### Claim 7 (depends on 6) The display device according to claim 6, wherein the first electrode overlaps the first reflective pattern and is disposed on the first reflective layer, and the second electrode overlaps the second reflective pattern and is disposed on the second reflective layer. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the first bank and the second bank each have a trapezoidal shape having sidewalls inclined at an angle. ### Claim 9 A display device comprising: a light emitting element disposed on a substrate at regular intervals in a first direction, and comprising: a first end including a first surface; and a second end including a second surface parallel to the first surface; a plurality of organic patterns respectively disposed on the light emitting elements, and each exposing the first surface and the second surface; a first electrode electrically contacting the first end; and a second electrode electrically contacting the second end, wherein the first electrode and the second electrode are disposed on the substrate and spaced apart from each other in a second direction intersecting the first direction, a top surface of each of the plurality of organic patterns is a convex surface protruding in a third direction intersecting the first direction and the second direction. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the plurality of organic patterns are spaced apart from each other without contacting each other. ### Claim 11 (depends on 9) The display device according to claim 9, further comprising scattering particles dispersed in the plurality of organic patterns, wherein the scattering particles include at least one of titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In203), zinc oxide (ZnO), and tin oxide (SnO2). ### Claim 12 (depends on 11) The display device according to claim 11, further comprising wavelength conversion particles dispersed in the plurality of organic patterns, wherein the wavelength conversion particles include quantum dots. ### Claim 13 (depends on 9) The display device according to claim 9, further comprising: a first reflective pattern disposed adjacent to the first end and disposed on the substrate; and a second reflective pattern disposed adjacent to the second end and disposed on the substrate. ### Claim 14 A method of fabricating a display device, comprising: preparing a gravure substrate including a groove; disposing, into the groove, ink including a base resin and light emitting elements dispersed in the base resin; transferring the ink disposed in the groove to a blanket; transferring, to the substrate, the ink transferred to the blanket; forming an organic pattern by removing at least a portion of the base resin; and forming, on the substrate, a first electrode and a second electrode partially overlapping the light emitting element, and spaced apart from each other in a direction. ### Claim 15 (depends on 14) The method according to claim 14, wherein the light emitting element comprises: a first surface; and a second surface parallel to the first direction, a surface area of the first surface being less than a surface area of the second surface, and the forming of the organic pattern comprises removing at least a portion of the base resin such that the first surface and the second surface are exposed. ### Claim 16 (depends on 15) The method according to claim 15, wherein the first electrode electrically contacts the first surface, and the second electrode electrically contacts the second surface. ### Claim 17 (depends on 16) The method according to claim 16, wherein a top surface of the organic pattern is a curved surface. ### Claim 18 (depends on 14) The method according to claim 14, wherein the disposing of the ink including the base resin and the light emitting elements comprises: applying the ink onto the gravure substrate; and removing, using a blade that scrapes a surface of the gravure surface, the ink that is not disposed into the groove. ### Claim 19 (depends on 14) The method according to claim 14, wherein; in a plan view, a surface area of the groove is greater than a surface area of the light emitting element, and one light emitting element is disposed into the groove. ### Claim 20 (depends on 14) The method according to claim 14, wherein the gravure substrate includes a plurality of grooves, and the plurality of grooves are spaced apart from each other at regular intervals.