Display apparatus

A display apparatus comprising:

• a display panel;
• a touch sensing unit disposed on the display panel, the touch sensing unit comprising a transmission touch line;
• and
• a touch driving circuit configured to:
• receive a driving voltage and a ground voltage;
• and
• apply a touch driving signal to the transmission touch line,
• wherein the touch driving circuit comprises:
• a switch group comprising switch devices, the switch devices comprising first ends connected to the transmission touch line;
• and
• capacitor devices each being connected to second ends of some switch devices of the switch devices, and
• wherein the touch driving signal has N voltage levels, a number of the capacitor devices is N−3, and “N” is a natural number greater than or equal to 4.

A display apparatus comprising:

• a display panel;
• a touch sensing unit disposed on the display panel, the touch sensing unit comprising a first transmission touch line and a second transmission touch line spaced apart from the first transmission touch line;
• and
• a touch driving circuit configured to:
• apply a first touch driving signal to the first transmission touch line;
• and
• apply a second touch driving signal to the second transmission touch line,
• wherein the touch driving circuit comprises:
• a first switch group comprising a first sharing switch device of which a first end is connected to the first transmission touch line;
• and
• a second switch group comprising a second sharing switch device of which a first end is connected to the second transmission touch line and a second end is connected to a second end of the first sharing switch device, and
• wherein the touch driving circuit is configured to:
• turn on the first sharing switch device and the second sharing switch device during a first period such that the first touch driving signal and the second touch driving signal have a first voltage level;
• and
• turn on the first sharing switch device and the second sharing switch device during a second period different from the first period such that the first touch driving signal and the second touch driving signal have a second voltage level different from the first voltage level.

A display apparatus comprising:

• a display panel;
• a touch sensing unit disposed on the display panel, the touch sensing unit comprising a first transmission touch line and a second transmission touch line spaced apart from the first transmission touch line;
• and
• a touch driving circuit configured to:
• apply a first touch driving signal to the first transmission touch line;
• and
• apply a second touch driving signal to the second transmission touch line,
• wherein the first touch driving signal and the second touch driving signal have first to n-th voltage levels that sequentially increase, “n” being an odd number greater than or equal to 3,
• wherein each of the first touch driving signal and the second touch driving signal has an ((n+1)/2)-th voltage level during a first period,
• wherein the first touch driving signal has an ((n+3)/2)-th voltage level during a second period after the first period, and
• wherein the second touch driving signal has an ((n−1)/2)-th voltage level during the second period after the first period.