# US 12,224,382 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,382 B2 - Document ID: US12224382B2 - Status: Granted - Kind: B2 - Application number: 18/167,746 - Filed: 2023-02-10 - Published: 2023-06-22 - Granted: 2025-02-11 - Earliest claimed: 2019-09-20 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Kwang Soo Bae; Beom Soo Park; Min Jeong Oh; Young Je Cho - Web page: https://patentgrep.com/patent/US12224382B2 ## CPC - H10H 20/851: Wavelength conversion means - H10H 20/8512: {Wavelength conversion materials} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - 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 20/854: characterised by their material, e.g. epoxy or silicone resins - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2320/0238: Improving the black level - H10H 20/819: characterised by their shape, e.g. curved or truncated substrates - H10H 20/882: {Scattering means (H10H20/82 takes precedence)} - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display device may include: a substrate; first and second electrode on the substrate; light emitting element between the first and second electrodes; a barrier structure on the substrate and including a first surface, a second surface, and a third surface; a light conversion layer on the barrier structure; and a passivation layer on the light conversion layer. A first space defined by the second and third surfaces may be between the substrate and the barrier structure. A second space defined by the first and second surfaces may be between the barrier structure and the passivation layer. The first and second spaces may be alternately located in the first direction. The light emitting element may be in the first space. The light conversion layer may be in the at least one second space. ## Claims ### Claim 1 A display device comprising: a substrate; a first electrode and a second electrode on the substrate and spaced apart from each other in a first direction; a light emitting element between the first electrode and the second electrode; a light conversion layer on the substrate; and a barrier structure on the substrate and including a first surface, a second surface, and a third surface, wherein a first space defined by the second surface and the third surface is between the substrate and the barrier structure, wherein a second space defined by the first surface and the second surface is in the barrier structure, wherein the first space and the second space are alternately located in the first direction, wherein the light conversion layer is in the first space, and wherein the light emitting element is in the at least one second space. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the first surface exposes at least a portion of the first electrode and at least a portion of the second electrode, and has a first hole overlapping the light emitting element. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the third surface has a second hole overlapping the light conversion layer. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising a passivation layer on the barrier structure, and a color filter on the passivation layer. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the light conversion layer comprises a base resin, wavelength conversion particles dispersed in the base resin, and light scattering particles dispersed in the base resin. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the first surface is closer to the substrate than is the third surface, and the first surface and the third surface are alternately arranged in the first direction. ### Claim 7 (depends on 6) The display device according to claim 6, wherein the second surface is between the first surface and the third surface and couples the first surface with the third surface. ### Claim 8 (depends on 1) The display device according to claim 1, further comprising a light shielding pattern located along the second surface in the second space in which the light emitting element is not included, wherein the light shielding pattern includes metal. ### Claim 9 (depends on 1) The display device according to claim 1, further comprising a black matrix overlapping the second space in which the light emitting element is not on the barrier structure, the black matrix being configured to absorb and block incident light.