US 12,085,527 B2
Cell potential measurement device
Satoshi Urakawa, Kyoto (JP); and Masakazu Sanada, Kyoto (JP)
Assigned to SCREEN HOLDINGS CO., LTD., Kyoto (JP)
Appl. No. 17/618,720
Filed by SCREEN HOLDINGS CO., LTD., Kyoto (JP)
PCT Filed Jun. 22, 2020, PCT No. PCT/JP2020/024335
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2020/262285, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-116912 (JP), filed on Jun. 25, 2019.
Prior Publication US 2022/0244210 A1, Aug. 4, 2022
Int. Cl. G01N 27/22 (2006.01)
CPC G01N 27/227 (2013.01) [G01N 27/226 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cell potential measurement device having a measuring plane on which a cell suspension is dropped, the cell potential measurement device comprising:
a plurality of working electrodes two-dimensionally arranged in a working region of the measuring plane;
a reference electrode provided outside from the working region of the measuring plane,
a plurality of wires each drawn from corresponding one of the plurality of working electrodes and the reference electrode; and
an insulating film covering the plurality of wires, wherein:
a hydrophobic region, in which a hydrophobic film is disposed, is provided between the working region and the reference electrode of the measuring plane,
a contact angle in the hydrophobic region is larger than a contact angle in the working region and larger than a contact angle in the insulating film,
the plurality of wires extends outside the hydrophobic region, and
the hydrophobic film is a conductive film.