Sensor device and method for controlling sensor nodes

A method of controlling sensor nodes to sense a touch of a user, the method comprising:

• selecting one of the sensor nodes;
• applying a first pulse signal to at least one first sensor node adjacent to the selected sensor node among the sensor nodes;
• and
• applying a second pulse signal having a polarity reverse to a polarity of the first pulse signal to at least one second sensor node among the sensor nodes when applying the first pulse signal,
• wherein, during portions of a period of time for which the first and the second pulse signals are provided, the first sensor node and the second sensor node are electrically connected to each other so that voltage levels of the first and the second pulse signals are adjusted.

A sensor device comprising:

• a sensor array including sensor nodes;
• signal lines connected to the sensor nodes;
• and
• a sensor driver configured to:
• select each of the sensor nodes through the signal lines and sense a touch of a user that is adjacent to the sensor array;
• apply, through a first signal line, a first pulse signal to at least one first sensor node adjacent to the selected sensor node among the sensor nodes;
• and
• apply, through a second signal line, a second pulse signal having a polarity reverse to a polarity of the first pulse signal to at least one second sensor node among the sensor nodes,
• wherein the sensor driver is configured to control, during a portion of a period of time for which voltage levels of the first and the second pulse signals transition, the first signal line and the second signal line to share charges with each other so that voltage levels of the first and the second pulse signals are adjusted.