Patent ID: 11868559
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. A detection function-equipped display device comprising:
a display unit in which a plurality of drive electrodes, a plurality of pixels each including a pixel electrode facing a corresponding one of the drive electrodes, and a plurality of detection electrodes facing the drive electrodes are disposed;
a DDIC configured to drive the drive electrodes and the pixel electrodes;
a touch IC coupled to the detection electrodes and configured to perform detection of a touch based on outputs from the detection electrodes;
a potential selection circuit coupled to each of the drive electrodes and configured to perform switching control to switch a potential of each of the drive electrodes between a drive potential and a non-drive potential; and
a signal selection circuit coupled to the DDIC and the touch IC and configured to supply, to the potential selection circuit, either a first signal from the DDIC or a second signal from the touch IC,
wherein
the switching control includes processing of applying the drive potential to one or more of the drive electrodes based on one of the first signal and the second signal and applying the non-drive potential to the other drive electrodes other than the one or more of the drive electrodes,
the touch IC and the signal selection circuit are directly coupled to each other through a bypass line but not through the scanning circuit,
each drive electrode and the touch IC are coupled to each other through a branch line but not through the signal selection circuit nor the potential selection circuit, and
the branch line has one end coupled to the bypass line and another end coupled to a switch configured to control a state of coupling between the touch IC and the drive electrode.