Patent ID: 11906563
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  C | IPC G

Claim 2:
3. An electric potential measuring device comprising:
a plurality of readout electrodes in an array form, wherein
each read electrode of the plurality of readout electrodes is configured to detect an electric potential of an action potential generation point, and
the electric potential is generated by an action of a cell;

an insulating member;
a metal member;
a reference electrode configured to detect a reference potential, wherein the reference electrode is within the array of the plurality of readout electrodes; and
an amplification section configured to obtain a potential difference between the detected electric potential and the detected reference potential, wherein
each readout electrode has a covered region and an opened region,
the metal member and the insulating member are present on the covered region of each readout electrode,
the metal member and the insulating member are absent on the opened region of each readout electrode, and
each readout electrode has, in the opened region, at least one high portion with a first height and at least one low portion with a second height,
the first height is higher than second height with a stacking surface of a corresponding readout electrode with the insulating member as a standard.