Touch input device

A touch input device having a touch surface, the touch input device comprising:

• a touch sensor including a plurality of driving electrodes and a plurality of receiving electrodes electrically insulated from the plurality of driving electrodes;
• a touch detection unit configured to:
• apply a driving signal to at least one first driving electrode among the plurality of driving electrodes;
• detect a first receiving signal associated with a touch position of an object input to the touch surface from a first receiving electrode among the plurality of receiving electrodes,
• detect a second receiving signal associated with a low ground mass (LGM) disturbance signal from a second receiving electrode among the plurality of receiving electrodes;
• and
• detect whether or not the object has been touched and a touch position based on a signal obtained by subtracting the second receiving signal from the first receiving signal;
• wherein the first receiving electrode among the plurality of receiving electrodes is immediately adjacent to the first driving electrode,
• wherein the second receiving electrode among the plurality of receiving electrodes is not immediately adjacent to the first driving electrode,
• wherein, when the driving signal is applied to a second driving electrode different from the first driving electrode by the controller, the first receiving electrode is not immediately adjacent to the second driving electrode, and the second receiving electrode is immediately adjacent to the second driving electrode,
• wherein the first receiving signal includes information on the amount of change in capacitance due to the touch of the object and noise information,
• wherein the second receiving signal includes the noise information, and
• wherein the noise information includes a display noise information, a change amount information according to a change in an image displayed on a display panel, and a change amount of capacitance due to the LGM disturbance signal generated in a floating state.

A touch sensor, the touch sensor comprises:

• a plurality of driving electrodes;
• and
• a plurality of receiving electrodes electrically insulated from the plurality of driving electrodes,
• wherein, when a driving signal is applied to at least one first driving electrode among the plurality of driving electrodes, a first receiving signal is output from at least one first receiving electrode immediately adjacent to the first driving electrode among the plurality of receiving electrodes and a second receiving signal is output from at least second receiving electrode that is not immediately adjacent to the first driving electrode among the plurality of receiving electrodes,
• wherein, when the driving signal is applied to at least one second driving electrode immediately adjacent to the second receiving electrode among the plurality of driving electrodes, a third receiving signal is output from the second receiving electrode, and a fourth receiving signal is output from the first receiving electrode,
• wherein the first and third receiving signals include information on the amount of change in capacitance due to the touch of the object and a noise information,
• wherein the second and fourth detection signals include the noise information, and
• wherein the noise information includes a display noise information, a change amount information according to a change in an image displayed on a display panel, and a change amount of capacitance due to the low ground mass (LGM) disturbance signal generated in a floating state.