# US 12,224,306 B2 · Pixel and display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,306 B2 - Document ID: US12224306B2 - Status: Granted - Kind: B2 - Application number: 17/395,804 - Filed: 2021-08-06 - Published: 2022-06-09 - Granted: 2025-02-11 - Earliest claimed: 2020-12-07 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Eun A Cho; Jong Hyuk Kang; Won Ho Lee - Web page: https://patentgrep.com/patent/US12224306B2 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - H10D 30/6723: {having light shields} - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10H 20/831: characterised by their shape - 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 - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A pixel includes a light emitting area including a central portion and an outer portion, a non-light emitting area surrounding the light emitting area, a first electrode and a second electrode that are spaced apart from each other in the light emitting area, and a first light emitting element disposed between the first electrode and the second electrode. The first electrode and the second electrode are spaced apart from each other at a first interval in the central portion, and are spaced apart from each other at a second interval in the outer portion. The second interval is larger than the first interval. An interval between the first electrode and the second electrode gradually increases from the central portion to the outer portion. ## Claims ### Claim 1 A pixel comprising: a light emitting area including a central portion and an outer portion; a non-light emitting area surrounding the light emitting area; a first electrode and a second electrode that are spaced apart from each other in the light emitting area; and a first light emitting element disposed between the first electrode and the second electrode, wherein the first electrode and the second electrode are spaced apart from each other at a first interval in the central portion, the first electrode and the second electrode are spaced apart from each other at a second interval in the outer portion, the second interval being larger than the first interval, and an interval between the first electrode and the second electrode gradually increases from the central portion to the outer portion. ### Claim 2 (depends on 1) The pixel of claim 1, wherein the second interval between the first electrode and the second electrode linearly increases in the outer portion. ### Claim 3 (depends on 1) The pixel of claim 1, wherein the second interval between the first electrode and the second electrode nonlinearly increases in the outer portion. ### Claim 4 (depends on 1) The pixel of claim 1, wherein the second interval between the first electrode and the second electrode varies discontinuously between different locations in the outer portion. ### Claim 5 (depends on 1) The pixel of claim 1, wherein the first electrode and the second electrode have shapes that are symmetrical to each other with respect to the first light emitting element. ### Claim 6 (depends on 1) The pixel of claim 1, wherein the first electrode and the second electrode have shapes that are symmetrical to each other with respect to the central portion. ### Claim 7 (depends on 1) The pixel of claim 1, wherein the first electrode and the second electrode have shapes that are symmetrical to each other with respect to the first light emitting element, and each of the first electrode and the second electrode has a vertically symmetrical shape with respect to the central portion. ### Claim 8 (depends on 1) The pixel of claim 1, wherein the first electrode and the second electrode have surfaces facing each other that have diagonal shapes, curved shapes, or step-like shapes. ### Claim 9 (depends on 1) The pixel of claim 1, wherein the first electrode and the second electrode are spaced apart from each other in a first direction in the light emitting area, and extend in a second direction. ### Claim 10 (depends on 9) The pixel of claim 9, wherein the first electrode and the second electrode are spaced apart from each other by the first interval in the first direction in the central portion, the first electrode and the second electrode are spaced apart from each other by the second interval in the first direction in the outer portion, and an interval between the first electrode and the second electrode in the first direction gradually increases from the central portion to the outer portion. ### Claim 11 (depends on 9) The pixel of claim 9, wherein the central portion includes: an area corresponding to a central point of the light emitting area in the second direction; and an area extending from the central point toward the outer portion. ### Claim 12 (depends on 11) The pixel of claim 11, wherein the first interval between the first electrode and the second electrode has a uniform distance in the central portion. ### Claim 13 (depends on 11) The pixel of claim 11, wherein the first interval between the first electrode and the second electrode gradually increases from the central point of the light emitting area. ### Claim 14 (depends on 11) The pixel of claim 11, wherein the first electrode and the second electrode have surfaces, respectively, facing each other, and have constant slopes or curvatures around the central point of the light emitting area on the surfaces of the first electrode and the second electrode facing each other, and the first electrode and the second electrode are spaced apart from each other at a continuously increasing interval. ### Claim 15 (depends on 1) The pixel of claim 1, wherein the light emitting area includes an unaligned area disposed between the outer portion and the non-light emitting area, the first electrode and the second electrode are farther spaced apart from each other in the unaligned area than in the central portion and the outer portion, and the first electrode and the second electrode each has a reduced width in the unaligned area. ### Claim 16 (depends on 1) The pixel of claim 1, wherein the first light emitting element is electrically connected between the first electrode and the second electrode. ### Claim 17 (depends on 16) The pixel of claim 16, further comprising a third electrode and a fourth electrode that are spaced apart from each other in the light emitting area and are separated from the first electrode and the second electrode; and a second light emitting element disposed between the third electrode and the fourth electrode. ### Claim 18 (depends on 17) The pixel of claim 17, wherein the third electrode and the fourth electrode are spaced apart from each other at a third interval in the central portion, and the third electrode and the fourth electrode are spaced apart from each other at a fourth interval in the outer portion, the fourth interval being larger than the third interval, and an interval between the third electrode and the fourth electrode gradually increases from the central portion to the outer portion. ### Claim 19 (depends on 17) The pixel of claim 17, further comprising: a first contact electrode electrically connecting the first electrode and a first end portion of the first light emitting element; a second contact electrode electrically connecting the second electrode, a second end portion of the first light emitting element, the third electrode, and a first end portion of the second light emitting element; and a third contact electrode electrically connecting the fourth electrode and a second end portion of the second light emitting element. ### Claim 20 A display device comprising: a pixel disposed in a display area, wherein the pixel includes: a light emitting area including a central portion and an outer portion; a non-light emitting area surrounding the light emitting area; a first electrode and a second electrode that are spaced apart from each other in the light emitting area; and a first light emitting element disposed between the first electrode and the second electrode, the first electrode and the second electrode are spaced apart from each other at a first interval in the central portion, the first electrode and the second electrode are spaced apart from each other at a second interval in the outer portion, the second interval being larger than the first interval, and an interval between the first electrode and the second electrode gradually increases from the central portion to the outer portion.