# US 12,765,128 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 12,765,128 B2 - Document ID: US12765128B2 - Status: Granted - Kind: B2 - Application number: 18/019,773 - Filed: 2020-09-25 - Published: 2023-10-26 - Granted: 2026-10-13 - Earliest claimed: 2020-08-06 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Jong Chan Lee; Sung Geun Bae; Sung Jin Lee; Tae Hee Lee - Web page: https://patentgrep.com/patent/US12765128B2 ## CPC - H10H 20/8312: {extending at least partially through the bodies} - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/00: Package configurations - H10H 20/032: {of electrodes} - 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 including: a substrate; a first electrode on the substrate; a second electrode spaced from the first electrode on the substrate; a light emitting element on the first electrode and the second electrode, respective ends of the light emitting element being on the first electrode and the second electrode; a first insulating pattern on the light emitting element and exposing the ends of the light emitting element; and a second insulating pattern on the first electrode and spaced from the first insulating pattern, wherein the first insulating pattern and the second insulating pattern comprise a same material. ## Claims ### Claim 1 A display device comprising: a substrate; a first electrode on the substrate; a second electrode spaced from the first electrode on the substrate in a first direction perpendicular to a thickness direction of the substrate; a light emitting element on the first electrode and the second electrode, respective ends of the light emitting element being on the first electrode and the second electrode; a first insulating pattern on the light emitting element and exposing the ends of the light emitting element; a second insulating pattern on the first electrode and entirely spaced from the first insulating pattern in the first direction; a third insulating pattern on the second electrode and spaced from the first insulating pattern and the second insulating pattern; a first contact electrode on the first electrode and in contact with one end of the light emitting element and the first electrode; and a second contact electrode on the second electrode and in contact with the other end of the light emitting element and the second electrode, wherein the first contact electrode covers the first insulating pattern, wherein the second contact electrode covers the third insulating pattern, wherein the first insulating pattern and the second insulating pattern comprise a same material, and wherein the second insulating pattern does not overlap the first insulating pattern in the thickness direction. ### Claim 2 (depends on 1) The display device of claim 1, wherein the first contact electrode covers the first insulating pattern. ### Claim 3 (depends on 2) The display device of claim 2, further comprising a first insulating layer on the first electrode and the second electrode, wherein the light emitting element and the second insulating pattern are on the first insulating layer, and wherein the first contact electrode is in contact with the first electrode through a first opening penetrating through the first insulating layer. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first opening does not overlap the first insulating pattern and the second insulating pattern in the thickness direction of the substrate. ### Claim 5 (depends on 1) The display device of claim 1, wherein the third insulating pattern comprises the same material as the first and second insulating patterns. ### Claim 6 (depends on 5) The display device of claim 5, wherein the first contact electrode and the second contact electrode are spaced from each other on the first insulating pattern. ### Claim 7 (depends on 1) The display device of claim 1, wherein a thickness of the first insulating pattern is greater than a thickness of the second insulating pattern. ### Claim 8 (depends on 1) The display device of claim 1, wherein the second insulating pattern does not overlap both ends of the first electrode in the thickness direction of the substrate. ### Claim 9 (depends on 8) The display device of claim 8, wherein each of the first insulating pattern and the second insulating pattern has an island shape in a plan view. ### Claim 10 (depends on 1) The display device of claim 1, wherein a cross-sectional shape of the second insulating pattern is a shape in which one side surface of the second insulating pattern opposing the first insulating pattern is parallel to the first insulating pattern and an other side surface of the second insulating pattern protrudes outward of an emission area of the display device. ### Claim 11 A display device comprising: a substrate; a first electrode on one surface of the substrate and extending in a first direction; a second electrode spaced from the first electrode, on the one surface of the substrate, and extending in the first direction; a light emitting element on the first electrode and the second electrode, respective ends of the light emitting element being on the first electrode and the second electrode; a first insulating pattern on the substrate in an area between the first electrode and the second electrode and extending in the first direction; and a second insulating pattern spaced from the first insulating pattern, on the first electrode, and extending in the first direction; a third insulating pattern on the second electrode and spaced from the first insulating pattern and the second insulating pattern; a first contact electrode on the first electrode and in contact with one end of the light emitting element and the first electrode; and a second contact electrode on the second electrode and in contact with the other end of the light emitting element and the second electrode, wherein the first contact electrode covers the first insulating pattern, wherein the second contact electrode covers the third insulating pattern, wherein at least a portion of the first insulating pattern is on the light emitting element, and does not overlap the ends of the light emitting element in a thickness direction of the substrate, wherein the second insulating pattern does not overlap both ends of the first electrode in the thickness direction of the substrate, and wherein a thickness of the first insulating pattern is greater than a diameter of the light emitting elements. ### Claim 12 (depends on 11) The display device of claim 11, wherein the first contact electrode extends in the first direction, and covers the second insulating pattern. ### Claim 13 (depends on 11) The display device of claim 11, wherein the first insulating pattern and the second insulating pattern comprise a same material. ### Claim 14 A manufacturing method for a display device, the method comprising: preparing a substrate comprising a first electrode and a second electrode that are spaced from and opposing each other, and a plurality of light emitting elements on the first electrode or the second electrode; and disposing a shadow mask on the substrate and forming an insulating pattern material layer on the first electrode and the second electrode as well as on an area between the first electrode and the second electrode using the shadow mask, wherein the insulating pattern material layer: overlaps one end of the first electrode opposing the second electrode and one end of the second electrode opposing the first electrode, in a thickness direction of the substrate, and does not overlap an other end of the first electrode and an other end of the second electrode in the thickness direction of the substrate. ### Claim 15 (depends on 14) The manufacturing method of claim 14, wherein the plurality of light emitting elements comprises a first light emitting element having respective ends on the first electrode and the second electrode, and a second light emitting element having two ends, wherein at least one of the two ends of the second light emitting element is not on the first electrode or the second electrode, and wherein the insulating pattern material layer covers the first light emitting element. ### Claim 16 (depends on 15) The manufacturing method of claim 15, wherein the insulating pattern material layer does not overlap the second light emitting element in the thickness direction of the substrate, the manufacturing method for the display device further comprising, after the forming of the insulating pattern material layer, removing the second light emitting element. ### Claim 17 (depends on 16) The manufacturing method of claim 16, wherein in the removing of the second light emitting element, the first light emitting element is covered by the insulating pattern material layer and is not removed. ### Claim 18 (depends on 14) The manufacturing method of claim 14, further comprising forming a first insulating pattern, a second insulating pattern, and a third insulating pattern by etching the insulating pattern material layer, wherein the first insulating pattern is on the plurality of light emitting elements and exposes both ends of the plurality of light emitting elements, wherein the second insulating pattern is on the first electrode, wherein the third insulating pattern is on the second electrode, and wherein the first insulating pattern, the second insulating pattern, and the third insulating pattern are spaced from each other. ### Claim 19 (depends on 18) The manufacturing method for the display device of claim 18, further comprising forming a first contact electrode in contact with one ends of the plurality of light emitting elements and the first electrode and a second contact electrode in contact with other ends of the plurality of light emitting elements and the second electrode, wherein the first contact electrode and the second contact electrode are spaced from each other, wherein the first contact electrode is on the first electrode and covers the second insulating pattern, and wherein the second contact electrode is on the second electrode and covers the third insulating pattern.