Touch-panel-integrated liquid crystal display and method of driving the same

A method of driving a touch-panel-integrated liquid crystal display, the method comprising:

• providing a touch-panel-integrated liquid crystal display comprising a plurality of first lines which extend in a first direction, a plurality of second lines extend in a second direction that intersects the first direction, a plurality of thin film transistors which are respectively disposed at interconnections between the first lines and the second lines, a first comparator which comprises first and second nodes, a first sensor line which is connected to the first node, extends in the first direction, and transmits a touch signal corresponding to the first direction, and a first decoupler which is connected between the second node and one of the first lines and decouples coupling noise present in the touch signal corresponding to the first direction;
• and
• applying external pressure to a touch panel of the touch-panel-integrated liquid crystal display, generating a signal which is a same as the coupling noise present in the touch signal corresponding to the first direction, and outputting the decoupled touch signal by applying the generated signal to an input terminal of the first comparator.

A method of driving a touch-panel-integrated liquid crystal display, the method comprising:

• providing a touch-panel-integrated liquid crystal display comprising a plurality of first lines which extend in a first direction, a plurality of second lines extend in a second direction that intersects the first direction, a plurality of thin film transistors which are respectively disposed at interconnections between the first lines and the second lines, a first comparator which comprises first and second nodes, a first sensor line which is connected to the first node, extends in the first direction, and transmits a touch signal corresponding to the first direction, a common electrode, and a decoupler which is connected between the second node and the common electrode, and decouples coupling noise present in a common voltage that is applied to the common electrode;
• and
• applying external pressure to a touch panel of the touch-panel-integrated liquid crystal display, reducing the common voltage, and outputting the decoupled common voltage by applying the reduced common voltage to an input terminal of the first comparator.