# US 12,190,832 B2 · Tiled display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,190,832 B2 - Document ID: US12190832B2 - Status: Granted - Kind: B2 - Application number: 17/443,575 - Filed: 2021-07-27 - Published: 2022-02-24 - Granted: 2025-01-07 - Earliest claimed: 2020-08-19 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Ho Kil Oh; Jin Suek Kim; Sae Ron Park; Seung Bo Shim; Eung Gyu Lee; Jae Soo Jang - Web page: https://patentgrep.com/patent/US12190832B2 ## CPC - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - H10H 20/851: Wavelength conversion means - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - G09F 9/33: being semiconductor devices, e.g. diodes - G09G 3/30: using electroluminescent panels - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions - G09G 2300/0413: Details of dummy pixels or dummy lines in flat panels - G09G 2300/0426: Layout of electrodes and connections - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - H10H 20/8515: {not being in contact with the bodies} - H10K 59/18: Tiled displays - H10W 90/00: Package configurations - 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) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A tiled display device includes a first display device including a first pixel, and a second display device coupled to the first display device in a bonding area, including a second pixel, and overlapping the first display device in the bonding area in a plane view. ## Claims ### Claim 1 A tiled display device comprising: a first display device comprising a first pixel and a first light control part configured to convert a wavelength of provided light; and a second display device coupled to the first display device in a bonding area, overlapping the first display device in the bonding area in a plane view such that at least a portion of the second display device is under a bottom of the first display device with respect to a thickness direction of the second display device, and comprising: a second pixel; a second outer area in the bonding area; a dummy pixel area in which a light emitting element is located, the light emitting element being in the bonding area and being configured to output light; and a second light control part configured to convert a wavelength of provided light, and having at least a portion that is in the dummy pixel area, wherein the first display device comprises a first outer area in the bonding area with at least a portion of the first light control part therein, wherein the first light control part in the first outer area comprises a first wavelength conversion material and a second wavelength conversion material, wherein the first wavelength conversion material is configured to convert light of a first color into light of a second color, and wherein the second wavelength conversion material is configured to convert the light of the first color into light of a third color. ### Claim 2 (depends on 1) The tiled display device of claim 1, wherein the first outer area and the second outer area do not overlap with each other in a plane view. ### Claim 3 (depends on 1) The tiled display device of claim 1, wherein the first outer area is configured to emit light therein without the first pixel being in the first outer area. ### Claim 4 (depends on 1) The tiled display device of claim 1, wherein the dummy pixel area overlaps with the first outer area in a plane view. ### Claim 5 (depends on 1) The tiled display device of claim 1, wherein at least a portion of the first pixel overlaps with the second outer area in a plane view, and wherein the second outer area is configured to provide light therefrom. ### Claim 6 (depends on 1) The tiled display device of claim 1, wherein the first outer area is configured to transmit light output from a dummy pixel in the dummy pixel area such that light is externally emitted. ### Claim 7 (depends on 1) The tiled display device of claim 1, wherein the second light control part is not located in the second outer area. ### Claim 8 (depends on 1) The tiled display device of claim 1, wherein the first light control part in the first outer area is configured to convert light into white light. ### Claim 9 (depends on 1) The tiled display device of claim 1, wherein the second display device is configured to output blue light in the dummy pixel area. ### Claim 10 (depends on 1) The tiled display device of claim 1, wherein first light having a first wavelength is output from the dummy pixel area, and wherein at least a portion of the first light is transmitted through the first outer area of the first display device such that the first light is converted into second light having a second wavelength that is different from the first wavelength. ### Claim 11 (depends on 1) The tiled display device of claim 1, wherein the second display device is configured to output the light of the first color in the dummy pixel area, and to output the light of the first color in a pixel area adjacent to the dummy pixel area. ### Claim 12 (depends on 11) The tiled display device of claim 11, wherein the second display device is configured to output light with a first luminance in the dummy pixel area, and to output light with a second luminance in a pixel area most adjacent to the dummy pixel area, the first luminance and the second luminance being substantially equal. ### Claim 13 (depends on 1) The tiled display device of claim 1, wherein the first display device comprises a first bending area in which at least a portion of the first display device is bent, wherein the second display device comprises a second bending area in which at least a portion of the second display device is bent, and wherein the first bending area and the second bending area overlap with each other in the bonding area. ### Claim 14 (depends on 1) The tiled display device of claim 1, wherein the first display device comprises a first substrate, wherein the second display device comprises a second substrate, wherein the first substrate comprises a (1-1)th substrate area having a (1-1)th thickness, and a (1-2)th substrate area having a (1-2)th thickness that is thinner than the (1-1)th thickness, wherein the second substrate comprises a (2-1)th substrate area having a (2-1)th thickness, and a (2-2)th substrate area having a (2-2)th thickness that is thinner than the (2-1)th thickness, and wherein the (1-2)th substrate area and the (2-2)th substrate area overlap with each other in the bonding area in a plane view.