# US 2021/0330261 A1 · Sensor array and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0330261 A1 - Document ID: US20210330261A1 - Status: Published application - Kind: A1 - Application number: 17/094,082 - Filed: 2020-11-10 - Published: 2021-10-28 - Earliest claimed: 2020-04-23 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Jiyoung JUNG; Youngjun YUN; Suk Gyu HAHM - Web page: https://patentgrep.com/patent/US20210330261A1 ## CPC - A61B 5/6832: {using adhesives (conductive adhesive for bioelectric electrodes A61B5/259)} - A61B 5/6833: {Adhesive patches} - A61B 5/02416: {using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence)} - A61B 5/14552: {Details of sensors specially adapted therefor} - A61B 5/6843: {Monitoring or controlling sensor contact pressure} - A61B 2562/0247: Pressure sensors - A61B 2562/0261: Strain gauges - A61B 2562/0285: Nanoscale sensors - A61B 2562/066: in a matrix array - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Disclosed are a sensor array and a device including the sensor. In the sensor array in which a plurality of unit element groups are arranged, each of the unit element groups includes a pressure sensor, a light emitting element, and/or a light detecting element, and the pressure sensor includes a variable resistance layer including a stretchable polymer and conductive nanostructures dispersed in the stretchable polymer. ## Claims ### Claim 1 A sensor array, the sensor array comprising a plurality of unit element groups, wherein each of the unit element groups comprises a pressure sensor, a light emitting element, and a light detecting element, and the pressure sensor comprises a variable resistance layer comprising a stretchable polymer and conductive nanostructures dispersed in the stretchable polymer. ### Claim 2 (depends on 1) The sensor array of claim 1, wherein the stretchable polymer comprises a polyorganosiloxane, an elastomer comprising a butadiene moiety, an elastomer comprising a urethane moiety, an elastomer comprising an acrylic moiety, an elastomer comprising an olefin moiety, an inorganic elastomer, a derivative thereof, or a combination thereof. ### Claim 3 (depends on 1) The sensor array of claim 1, wherein the conductive nanostructures comprise carbon nanotubes, carbon nanowires, carbon nanoplates, carbon nanoflakes, carbon nanofibers, carbon nanocomposites, carbon nanoparticles, metal nanotubes, metal nanowires, metal nanoplates, metal nanoflakes, metal nanofibers, metal nanocomposites, metal nanoparticles, graphene, or a combination thereof. ### Claim 4 (depends on 3) The sensor array of claim 3, wherein an aspect ratio of the conductive nanostructures be greater than or equal to about 10. ### Claim 5 (depends on 1) The sensor array of claim 1, wherein the conductive nanostructures are included in an amount of about 0.001 wt % to about 50 wt % based on a total amount of the stretchable polymer and the conductive nanostructures. ### Claim 6 (depends on 1) The sensor array of claim 1, wherein the pressure sensor further comprises a pair of electrodes. ### Claim 7 (depends on 1) The sensor array of claim 1, wherein a resistance variation rate of the pressure sensor in a pressure range of about 15 kPa to 35 kPa is greater than or equal to about 20%. ### Claim 8 (depends on 1) The sensor array of claim 1, wherein the light emitting element comprises a first light emitting element and a second light emitting element which is configured to emit light in different wavelength spectra from each other. ### Claim 9 (depends on 8) The sensor array of claim 8, wherein the first light emitting element is a red light emitting element configured to emit light in a red wavelength spectrum, and the second light emitting element is a green light emitting element configured to emit light in a green wavelength spectrum. ### Claim 10 (depends on 1) The sensor array of claim 1, wherein the light emitting element comprises an inorganic light emitting diode, an organic light emitting diode, a micro light emitting diode, or a combination thereof. ### Claim 11 (depends on 10) The sensor array of claim 10, wherein the light emitting element is a stretchable light emitting element. ### Claim 12 (depends on 1) The sensor array of claim 1, wherein the light detecting element comprises an inorganic photodiode, an organic photoelectric conversion element, or a combination thereof. ### Claim 13 (depends on 12) The sensor array of claim 12, wherein the light detecting element is a stretchable light detecting element. ### Claim 14 (depends on 1) The sensor array of claim 1, wherein each unit element group comprises one pressure sensor, two light emitting elements, and one light detecting element. ### Claim 15 (depends on 1) The sensor array of claim 1, further comprising a stretchable substrate supporting the pressure sensor, the light emitting element and the light detecting element. ### Claim 16 (depends on 1) A device comprising the sensor array of claim 1. ### Claim 17 (depends on 16) The device of claim 16, wherein the device is a skin-attachable patch type device or a skin-attachable band type device. ### Claim 18 (depends on 16) The device of claim 16, wherein the device is a photoplethysmography sensor device, an electromyography sensor device, or a strain sensor device. ### Claim 19 (depends on 1) A method of operating the sensor array of claim 1, comprising specifying a position of a pressure sensor where a pressure is sensed among a plurality of unit element groups, and selectively driving unit element groups comprising the pressure sensor in which the pressure is sensed. ### Claim 20 (depends on 19) The method of claim 19, wherein the selectively driving of the unit element groups comprising the pressure sensor configured to sense the pressure comprises: irradiating first light from the light emitting elements of the unit element groups comprising the pressure sensors configured to sense the pressure, and absorbing second light generated by reflection of the first light by an object by the light detecting elements to convert the absorbed second light into an electrical signal.