US 11,892,423 B2
Sensor and production method for same
Megumi Hayasaka, Osaka (JP); Yoshifumi Komatsu, Osaka (JP); and Yoshihiro Harada, Osaka (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 16/770,842
Filed by SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
PCT Filed Mar. 25, 2019, PCT No. PCT/JP2019/012365
§ 371(c)(1), (2) Date Jun. 8, 2020,
PCT Pub. No. WO2019/188904, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-069317 (JP), filed on Mar. 30, 2018.
Prior Publication US 2020/0393399 A1, Dec. 17, 2020
Int. Cl. G01N 27/22 (2006.01)
CPC G01N 27/225 (2013.01) 15 Claims
OG exemplary drawing
 
1. A sensor, comprising:
a detection film formed from a resin composition;
a first electrode provided on a first surface of the detection film; and
a second electrode provided on a second surface of the detection film,
wherein the first surface of the detection film includes a rough surface having fine irregularities with a root mean square roughness (Sq) of 0.5 μm to 2.5 μm in a portion that is in contact with the first electrode, wherein the rough surface is on a side of the sensor exposed to an external environment,
wherein the sensor has flexibility,
wherein the detection film is a moisture-sensitive film, and
wherein the moisture-sensitive film is formed from a resin composition containing a polyimide resin component.