Patent ID: 11861120
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A detecting device comprising:
a plurality of drive electrodes arrayed in a first direction;
a plurality of detection electrodes arrayed in a second direction intersecting the first direction;
a drive signal supply circuit configured to supply a drive signal to the drive electrodes; and
a plurality of switch elements configured to switch between coupling and decoupling between the drive electrodes,
wherein
the drive electrodes include at least a first drive electrode and a second drive electrode disposed side by side in the first direction,
the drive signal supply circuit supplies a first voltage signal to one of the first drive electrode and the second drive electrode and supplies a second voltage signal having an electric potential different from an electric potential of the first voltage signal to another one of the first drive electrode and the second drive electrode,
the switch elements switch between coupling and decoupling of at least the first drive electrode and the second drive electrode,
the drive electrodes supplied with the first voltage signal and the drive electrodes supplied with the second voltage signal are selected based on a predetermined code,
the first voltage signal or the second voltage signal is supplied to the drive electrodes disposed in a partial region in a detection region, and
the other drive electrodes are brought into a floating state or are coupled to a reference potential.