US 12,449,924 B2
Stretchable pressure sensor array and electronic device including same
Yong Taek Hong, Seoul (KR); Han UI Kim, Seoul (KR); and Ji Seok Seo, Seoul (KR)
Assigned to SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Appl. No. 18/272,388
Filed by SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
PCT Filed Mar. 17, 2023, PCT No. PCT/KR2023/003619
§ 371(c)(1), (2) Date Jul. 14, 2023,
PCT Pub. No. WO2023/182737, PCT Pub. Date Sep. 28, 2023.
Claims priority of application No. 10-2022-0035374 (KR), filed on Mar. 22, 2022; and application No. 10-2022-0151043 (KR), filed on Nov. 11, 2022.
Prior Publication US 2024/0385711 A1, Nov. 21, 2024
Int. Cl. G06F 3/041 (2006.01); G01L 1/12 (2006.01); G01L 1/18 (2006.01); G01L 1/22 (2006.01)
CPC G06F 3/04144 (2019.05) [G01L 1/12 (2013.01); G01L 1/18 (2013.01); G01L 1/2287 (2013.01); G06F 3/0412 (2013.01); G06F 2203/04105 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A stretchable pressure sensor array, comprising;
a sensor sheet comprising an elastomer;
a plurality of conductive pillars at least partially embedded in the sensor sheet and formed by aligning magnetic particles in a thickness direction of the sensor sheet;
an upper electrode formed on the upper portion of the sensor sheet; and
a lower electrode formed on the lower portion of the sensor sheet,
wherein a conductive path is formed between the upper and lower electrodes and the conductive pillars so that current flows when pressure is applied from the upper surface or lower surface of the sensor sheet in a thickness direction,
wherein the upper electrode and the lower electrode are each provided in plurality, and
each of the upper electrode and the lower electrode is formed in a structure of crossing each other when viewed based on a vertical section of the sensor sheet, and
wherein the pressure sensor array senses pressure with varying spatial resolution depending on regions,
wherein the pressure sensor array comprises a first region and a second region that are separated from each other, and
wherein the first region and the second region have different mean pitch gaps between the upper electrodes formed in each region, different mean pitch gaps between the lower electrodes, or different mean pitch gaps of both.