Display device comprising touch function and operating method thereof

A display apparatus with a touch function comprising:

• a drive integrated circuit electrically connected to a driving signal line, the drive integrated circuited configured to generate a driving signal of the display apparatus and provide the driving signal via the driving signal line;
• a noise detector configured to identify a noise signal related to the driving signal using a noise sensing line disposed in a non-display area of the display apparatus;
• a touch driver configured to identify a touch input signal corresponding to a touch input to the display apparatus, and to identify information on the touch input based on the touch input signal and the noise signal;
• a guard line disposed between the noise sensing line included in the noise detector and a touch line included in the touch driver, the guard line configured to block the noise signal;
• a ground line spaced apart from the touch line in the non-display area;
• and
• a light emitting diode electrically connected to the drive integrated circuit, the light emitting diode including an anode, a cathode, and a light emitting layer between the anode and the cathode,
• wherein the cathode of the light emitting diode extends to overlap the touch line, the guard line, and the noise sensing line from a plan view, and
• wherein the noise sensing line is disposed between the guard line and the ground line.

An operating method of a display apparatus comprising:

• identifying a touch input signal corresponding to a touch input to the display apparatus;
• identifying a noise signal related to a driving signal in a driving signal line of the display apparatus using a noise sensing line disposed in a non-display area of the display apparatus;
• and
• identifying information on the touch input based on the touch input signal and the noise signal, wherein the noise sensing line is spaced apart from a touch line by a first distance in a non-display area of the display apparatus, a guard line is disposed between the touch line and the noise sensing line, a cathode is disposed below the touch line, the noise sensing line, and the guard line, and the driving signal line does not overlap with the touch line and the noise sensing line from a plan view.

A display apparatus with a touch function comprising:

• a touch line electrically connected to a touch electrode disposed in a display area of the display device;
• a noise sensing line disposed to be spaced apart from the touch line by a first distance in a non-display area of the display device;
• a driving signal line configured to provide a driving signal of the display device in the non-display area;
• a ground line disposed adjacent to the noise sensing line;
• a cathode disposed in a layer between a layer in which the ground line is disposed and a layer in which the driving signal line is disposed;
• and
• a touch driving circuit configured to identify information on a touch input using a touch input signal acquired through the touch line and a noise signal acquired through the noise sensing line,
• wherein the driving signal line does not overlap with the touch line and the noise sensing line from a plan view.