Display device having touch sensor and method for driving the same

A display device having a touch sensor, comprising:

• a display panel;
• a panel driving unit configured to drive the display panel;
• a timing controller configured to control driving timing of the panel driving unit;
• a touch sensor integrated with the display panel attached thereto or built therein;
• and
• a touch controller configured to:
• generate a sensing data from a signal from the touch sensor;
• calculate touch coordinates from the sensing data;
• forward the touch coordinates;
• and
• drive the touch sensor in a no noise period, excluding a periodic noise period, with reference to a noise component in the sensing data, the no noise period beginning in between successive horizontal synchronizing signals and ending while a later of the successive horizontal synchronizing signals is active.

A display device having a touch sensor, comprising:

• a display panel;
• a panel driving unit configured to drive the display panel;
• a common voltage generator configured to:
• generate a common voltage;
• and
• supply the common voltage to the display panel;
• a timing controller configured to control driving timing of the panel driving unit;
• a touch sensor integrated with the display panel attached thereto or built therein;
• and
• a touch controller configured to:
• generate a sensing data from a signal from the touch sensor;
• calculate a touch coordinates from the sensing data;
• forward the touch coordinates;
• and
• drive the touch sensor in a no noise period, excluding a periodic noise period, with reference to a noise component of a common voltage fed back thereto from the display panel through the common voltage generator, the no noise period beginning in between successive horizontal synchronizing signals and ending while a later of the successive horizontal synchronizing signals is active.

A method for driving a display device having a touch sensor, the method comprising:

• driving a display panel;
• and
• driving the touch sensor in a no noise period, excluding a period in which the noise is generated periodically from the display panel, by using at least two synchronizing signals controlling driving timing of the display panel,
• wherein the no noise period begins in between successive horizontal synchronizing signals and ends while a later of the successive horizontal synchronizing signals is active, and
• wherein the no noise period is indicated by counting at least one of:
• a horizontal synchronizing signal, a source output enable signal, and a gate output enable signal.

A method for driving a display device having a touch sensor, the method comprising:

• driving a display panel;
• generating a sensing data from a signal from the touch sensor;
• and
• driving the touch sensor in a no noise period, excluding a periodic noise period, with reference to a noise component in the sensing data, the no noise period beginning in between successive horizontal synchronizing signals and ending while a later of the successive horizontal synchronizing signals is active.