Touch sensor, display device, and electronic apparatus

A display device comprising:

• a plurality of display pixel electrodes;
• a common electrode provided in opposition to the display pixel electrodes;
• a display function layer having an image display function;
• a display control circuit that controls image display on the basis of an image signal so as to apply a display drive voltage between the display pixel electrodes and the common electrode to cause the display function layer to exert the image display function, on the basis of an image signal;
• a touch detection electrode provided in opposition to or side by side with the common electrode and forming an electrostatic capacitance between the touch detection electrode and the common electrode;
• and
• a touch detection circuit that performs a detection of a contact or proximity position of an object, on the basis of a detection signal obtained from the touch detection electrode, by using the display drive voltage applied to the common electrode by the display control circuit as a touch sensor drive signal,
• wherein the common electrode is split into a plurality of electrode patterns in a stripe shape, and application of the touch sensor drive signal to part of the plurality of electrode patterns causes a drive line to be formed at that time, and
• the touch detection circuit performs the detection on the basis of a first detection signal obtained from a first drive line formed in a first period, and a second detection signal obtained from a second drive line formed in a second period different from the first period and having a smaller line width than the first drive line.

An electronic apparatus comprising a display device with a touch sensor, the display device including:

• a plurality of display pixel electrodes;
• a common electrode provided in opposition to the display pixel electrodes;
• a display function layer having an image display function;
• a display control circuit that controls image display on the basis of an image signal so as to apply a display drive voltage between the display pixel electrodes and the common electrode to cause the display function layer to exert the image display function, on the basis of an image signal;
• a touch detection electrode provided in opposition to or side by side with the common electrode and forming an electrostatic capacitance between the touch detection electrode and the common electrode;
• and
• a touch detection circuit that performs a detection of a contact or proximity position of an object, on the basis of a detection signal obtained from the touch detection electrode, by using the display drive voltage applied to the common electrode by the display control circuit as a touch sensor drive signal,
• wherein the common electrode is split into a plurality of electrode patterns in a stripe shape, and application of the touch sensor drive signal to part of the plurality of electrode patterns causes a drive line to be formed at that time, and
• the touch detection circuit performs the detection on the basis of a first detection signal obtained from a first drive line formed in a first period, and a second detection signal obtained from a second drive line formed in a second period different from the first period and having a smaller line width than the first drive line.