# US 10,770,436 B2 · Light-emitting diode (LED) device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,436 B2 - Document ID: US10770436B2 - Status: Granted - Kind: B2 - Application number: 16/662,714 - Filed: 2019-10-24 - Published: 2020-02-27 - Granted: 2020-09-08 - Earliest claimed: 2016-02-26 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Ji-hye Yeon; Wan-tae Lim; Young-soo Park; Jung-sub Kim; Jin-sub Lee; Ha-nul Yoo; Hye-seok Noh - Web page: https://patentgrep.com/patent/US10770436B2 ## CPC - H10W 90/00: Package configurations - H10H 20/851: Wavelength conversion means - H10H 20/8513: {having two or more wavelength conversion materials} - H10H 20/856: Reflecting means - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A light-emitting diode (LED) device configured to provide a multi-color display includes a plurality of light-emitting cells at least partially defined by a partition layer. The LED device may be configured to reduce optical interferences between the light-emitting cells. The LED device includes a plurality of light-emitting structures spaced apart from one another; a plurality of electrode layers on respective first surfaces of the light-emitting structures, a separation layer configured to electrically insulate the light-emitting structures from each other; phosphor layers on respective second surfaces of the light-emitting structures and associated with different colors, and a partition layer between the phosphor layers to separate the phosphor layers from one another. Each light-emitting cell may include a separate light-emitting structure, a separate set of one or more electrodes, and a separate phosphor layer. ## Claims ### Claim 1 A light-emitting diode (LED) device comprising: a plurality of light-emitting structures spaced apart from each other, each light-emitting structure including a first surface and a second surface; a plurality of electrode layers on first surfaces of separate, respective light-emitting structures of the plurality of light-emitting structures; a separation layer configured to isolate the plurality of light-emitting structures from each other; a plurality of wavelength transformers on second surfaces of separate, respective light-emitting structures of the plurality of light-emitting structures; and a partition layer between the wavelength transformers, such that the partition layer separates the wavelength transformers from each other. ### Claim 2 (depends on 1) The LED device of claim 1, further comprising: a reflective layer between an electrode layer, of the plurality of electrode layers, and a light-emitting structure, of the plurality of light-emitting structures. ### Claim 3 (depends on 1) The LED device of claim 1, further comprising: an uneven structure on a surface of a light-emitting structure, of the plurality of light-emitting structures. ### Claim 4 (depends on 1) The LED device of claim 1, wherein the partition layer includes one or more sidewalls associated with a slope, such that the one or more sidewalls define a space having a distal end and proximate end in relation to at least one light-emitting structure of the plurality of light-emitting structures, the distal end having a greater diameter than the proximate end. ### Claim 5 (depends on 1) The LED device of claim 1, wherein the partition layer includes a single body structure. ### Claim 6 (depends on 1) The LED device of claim 1, further comprising: a light reflecting layer on a sidewall of the partition layer. ### Claim 7 (depends on 1) The LED device of claim 1, wherein the separation layer includes, a separating insulation layer on first sidewalls and bottom surfaces of the light-emitting structures, and a mold insulation layer configured to insulate the electrode layers from each other, respectively, and insulate the light-emitting structures from each other, respectively. ### Claim 8 (depends on 7) The LED device of claim 7, wherein a bottom surface of the mold insulation layer is flush with the bottom surfaces of the electrode layers. ### Claim 9 (depends on 1) The LED device of claim 1, wherein the separation layer includes, a separating insulation layer on first sidewalls and bottom surfaces of the light-emitting structures, a metal layer insulated from the light-emitting structures by the separating insulation layer, and a mold insulation layer configured to insulate the electrode layers from the metal layer. ### Claim 10 (depends on 1) The LED device of claim 1, wherein, the separation layer includes, a first separating insulation layer on first sidewalls and bottom surfaces of the light-emitting structures, a first metal layer insulated from the light-emitting structures by the first separating insulation layer, and a mold insulation layer insulating the electrode layers from one another; and the partition layer includes, a second separating insulation layer on first sidewalls of the plurality of wavelength transformers, the second separating insulation layer extending from the first separating insulation layer, and a second metal layer on the first sidewalls of the plurality of wavelength transformers, the second metal layer extending from the first metal layer. ### Claim 11 (depends on 1) The LED device of claim 1, wherein the partition layer overlaps at least a portion of the plurality of light-emitting structures. ### Claim 12 (depends on 1) The LED device of claim 1, wherein the separation layer covers the first surface of each of the plurality of light-emitting structures. ### Claim 13 (depends on 1) The LED device of claim 1, wherein the partition layer includes at least one of a substrate structure, an insulation structure, and a light reflecting structure. ### Claim 14 A light-emitting diode (LED) device comprising: a plurality of light-emitting structures spaced apart from each other, each light-emitting structure including a first surface and a second surface; a plurality of electrode layers on first surfaces of the plurality of light-emitting structures; a separation layer configured to isolate the plurality of light-emitting structures from each other; a plurality of wavelength transformers including quantum dots on second surfaces of separate, respective light-emitting structures of the plurality of light-emitting structures, the quantum dots including a group III-V compound semiconductor or a group II-VI compound semiconductor having a core-shell structure comprising a core and a shell, the core having a diameter between 1 nm and 30 nm, the shell having a thickness between 0.1 nm and 20 nm; and a partition layer between the wavelength transformers, such that the partition layer separates the wavelength transformers from each other. ### Claim 15 (depends on 14) The LED device of claim 14, wherein the core includes CdSe or InP, and the shell includes ZnS or ZnSe. ### Claim 16 (depends on 14) The LED device of claim 14, wherein the core has a diameter between 3 nm and 10 nm. ### Claim 17 (depends on 14) The LED device of claim 14, wherein the shell has a thickness between 0.5 nm and 2 nm. ### Claim 18 (depends on 14) The LED device of claim 14, wherein the wavelength transformers include quantum dots mixed with phosphor. ### Claim 19 (depends on 14) The LED device of claim 14, further comprising: a reflective layer between an electrode layer, of the plurality of electrode layers, and a light-emitting structure, of the plurality of light-emitting structures, and an uneven structure on a surface of the light-emitting structure, of the plurality of light-emitting structures. ### Claim 20 A light-emitting diode (LED) device comprising: a plurality of light-emitting structures spaced apart from each other, each light-emitting structure including a first surface and a second surface; a plurality of electrode layers on first surfaces of the plurality of light-emitting structures; a separation layer configured to isolate the plurality of light-emitting structures from each other; a plurality of wavelength transformers including quantum dots on second surfaces of separate, respective light-emitting structures of the plurality of light-emitting structures; and a partition layer between the wavelength transformers, such that the partition layer separates the wavelength transformers from each other.