# US 11,114,499 B2 · Display device having light emitting stacked structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,499 B2 - Document ID: US11114499B2 - Status: Granted - Kind: B2 - Application number: 16/236,737 - Filed: 2018-12-31 - Published: 2019-07-04 - Granted: 2021-09-07 - Earliest claimed: 2018-01-02 - Assignees: Seoul Viosys Co., Ltd. - Applicants: Seoul Viosys Co., Ltd. - Inventors: Chung Hoon Lee; Jong Hyeon Chae - Web page: https://patentgrep.com/patent/US11114499B2 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - 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 20/824: comprising only Group III-V materials, e.g. GaP - H10H 20/835: {Reflective materials} - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H 29/14: comprising multiple light-emitting semiconductor components - H10W 90/00: Package configurations - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 2300/0404: Matrix technologies - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - H10H 20/82: Roughened surfaces, e.g. at the interface between epitaxial layers - H10W 70/60: Insulating or insulated package substrates; Interposers; Redistribution layers (leadframes H10W70/40) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - 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) ## Abstract A display device includes a plurality of pixel tiles spaced apart from each other, each of the pixel tiles including a substrate and a plurality of light emitting stacked structures disposed on the substrate, in which a distance between two adjacent light emitting stacked structures in the same pixel tile is substantially equal to a shortest distance between two adjacent light emitting stacked structures of different pixel tiles. ## Claims ### Claim 1 A display device comprising: a plurality of pixel tiles spaced apart from each other, each of the pixel tiles including: a substrate; and a plurality of light emitting stacked structures disposed on the substrate, each of the light emitting stacked structures comprising a plurality of epitaxial sub-units sequentially disposed one over another to have overlapping light emitting areas, and each of the plurality of epitaxial sub-units being configured to emit different colored light, wherein a distance between two adjacent light emitting stacked structures in the same pixel tile is substantially equal to a shortest distance between two adjacent light emitting stacked structures of different pixel tiles. ### Claim 2 (depends on 1) The display device of claim 1, wherein each of the pixel tiles has substantially the same shape. ### Claim 3 (depends on 2) The display device of claim 2, wherein: the substrate has a substantially polygonal shape; and the light emitting stacked structures are disposed at vertices of the polygonal shape. ### Claim 4 (depends on 3) The display device of claim 3, wherein: the substrate has substantially a triangular shape; and the light emitting stacked structures are disposed at vertices of the triangular shape. ### Claim 5 (depends on 1) The display device of claim 1, wherein the light emitting stacked structures are arranged substantially regularly along at least one of a first direction and a second direction intersecting the first direction. ### Claim 6 (depends on 1) The display device of claim 1, wherein the pixel tiles have different shapes from each other. ### Claim 7 (depends on 1) The display device of claim 1, wherein the substrate comprises a silicon substrate. ### Claim 8 (depends on 7) The display device of claim 7, wherein the substrate includes a penetrating electrode that penetrates upper and lower surfaces of the substrate and is electrically connected to the light emitting stacked structures. ### Claim 9 (depends on 1) The display device of claim 1, wherein at least one of the epitaxial sub-units has an area different from that of another one of the epitaxial sub-units. ### Claim 10 (depends on 9) The display device of claim 9, wherein the area of the epitaxial sub-units gradually decreases along a first direction. ### Claim 11 (depends on 10) The display device of claim 10, wherein an upper epitaxial sub-unit completely overlaps a lower epitaxial sub-unit. ### Claim 12 (depends on 9) The display device of claim 9, wherein: light emitted from each epitaxial sub-units has a different energy band; and the energy band of light gradually increases along a first direction. ### Claim 13 (depends on 9) The display device of claim 9, wherein each of the epitaxial sub-units is independently drivable. ### Claim 14 (depends on 9) The display device of claim 9, wherein light emitted from a lower epitaxial sub-unit is configured to be emitted to the outside of the display device through an epitaxial sub-unit disposed thereon. ### Claim 15 (depends on 14) The display device of claim 14, wherein an upper epitaxial stack is configured to transmit about 80% or more of light emitted from a lower epitaxial stack. ### Claim 16 (depends on 9) The display device of claim 9, wherein the epitaxial sub-units comprise: a first epitaxial stack configured to emit a first color light; a second epitaxial stack disposed on the first epitaxial stack and configured to emit a second color light having a wavelength band different from the first color light; and a third epitaxial stack disposed on the second epitaxial stack and configured to emit a third color light having a wavelength band different from the first and second color lights. ### Claim 17 (depends on 16) The display device of claim 16, wherein the first, second, and third color lights are red light, green light, and blue light, respectively. ### Claim 18 (depends on 16) The display device of claim 16, wherein each of the first, second, and third epitaxial stacks comprises: a p-type semiconductor layer; an active layer disposed on the p-type semiconductor layer; and an n-type semiconductor layer disposed on the active layer. ### Claim 19 (depends on 1) The display device of claim 1, wherein the display device is configured to be driven in at least one of a passive matrix manner and an active matrix manner. ### Claim 20 (depends on 1) The display device of claim 1, wherein at least one of the light emitting stacked structures comprises a micro LED having a surface area less than about 10,000 square μm.