公开(公告)号：US11828718B2

公开(公告)日：2023-11-28

申请号：US17314038

申请日：2021-05-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Choon Gi Choi ,  Mondal Shuvra ,  Bok Ki Min ,  Yoonsik Yi

IPC: G01N27/12 ,  H01H13/70 ,  H01H13/04 ,  G01K7/02 ,  G01K7/16

CPC classification number: G01N27/121 ,  G01K7/02 ,  G01K7/16 ,  H01H13/04 ,  H01H13/70

Abstract: Provided is a button device including a humidity sensor. The button device includes a substrate having a plurality of sensing regions, a housing on the substrate, the housing separating a first sensing region of the plurality of sensing regions from other sensing regions, a porous structure within the housing, the porous structure having through-holes, a first electrode on the porous structure, a second electrode on the porous structure, the second electrode being electrically connected to the first electrode through the porous structure, and a temperature sensor disposed adjacent to the first sensing region to sense a temperature of the first sensing region, The porous structure includes a body having an outer surface defining the through-holes, the body having an air gap therein.