Touch display device and touch driving circuit

A touch display device comprising:

• a display panel including a plurality of subpixels and a plurality of touch electrodes;
• a display driving circuit configured to drive the plurality of subpixels;
• a touch driving circuit configured to supply a touch driving signal to at least one of the plurality of touch electrodes;
• a display controller configured to control the display driving circuit and supply a first mode control signal to a touch controller;
• and
• the touch controller configured to supply a second mode control signal to the touch driving circuit,
• wherein an operation period of the touch display device includes a display mode period and a touch sensing mode period,
• wherein the touch sensing mode period includes a first touch sensing mode period and a second touch sensing mode period, and
• wherein the display mode period, the first touch sensing mode period and the second touch sensing mode period are distinguished by the first mode control signal and the second mode control signal.

A touch driving circuit comprising:

• two or more amplifiers corresponding to a plurality of first touch electrodes;
• two or more charge amplifiers corresponding to a plurality of second touch electrodes, each of the two or more charge amplifiers including a feedback capacitor;
• a first control switch circuit configured to control all or part of the plurality of first touch electrodes to be connected to all or part of the two or more amplifiers, or control all or part of the plurality of first touch electrodes to be connected to all or part of the two or more charge amplifiers, or control the plurality of first touch electrodes to be separated from the two or more amplifiers and the two or more charge amplifiers;
• and
• a second control switch circuit configured to control all or part of the plurality of second touch electrodes to be connected to all or part of the two or more charge amplifiers, or control all or part of the plurality of second touch electrodes to be separated from the two or more charge amplifiers,
• wherein an operation period of the touch driving circuit includes a first touch sensing mode period and a second touch sensing mode period which do not overlap with each other, and the second touch sensing mode period includes a first sub-sensing period and a second sub-sensing period which do not overlap with each other,
• wherein, during the first sub-sensing period, two or more first touch electrodes among the plurality of first touch electrodes are electrically connected to each other, and
• wherein, during the second sub-sensing period, two or more second touch electrodes among the plurality of second touch electrodes are electrically connected to each other.