Display device with integrated touch screen

A driver circuit for driving a display device with integrated touch screen, the display device comprising:

• a panel including a plurality of electrodes, wherein the panel is division-driven in a display driving mode and a touch driving mode during one frame period including at least a first display period, a second display period, a first non-display period, and a second non-display period, the driver circuit comprising:
• a display driver circuit to apply a common voltage to the plurality of electrodes during the first and second display periods of said one frame period in the display driving mode, data voltages being applied to pixels of the panel during the first and the second display periods of said one frame period and not being applied to the pixels of the panel during the first and second non-display periods of said one frame period,
• a touch driver circuit to apply, to the plurality of electrodes, a touch scan signal for a first duration in the first non-display period of said one frame period but not apply the touch scan signal to the plurality of electrodes during the second non-display period of said one frame period when the touch driving mode is a first touch driving mode, and apply, to the plurality of electrodes, the touch scan signal for a second duration in both the first and the second non-display periods when the touch driving mode is a second touch driving mode, wherein the first touch driving mode is an idle driving mode, and the second touch driving mode is an active driving mode,
• wherein the first duration is shorter than the second duration.

A method for driving a display device with integrated touch screen, the display device comprising:

• a panel including a plurality of electrodes, wherein the panel is division-driven in a display driving mode and a touch driving mode during one frame period including at least a first display period, a second display period, a first non-display period, and a second non-display period, the method comprising:
• applying a common voltage to the plurality of electrodes during the first and second display periods of said one frame period in the display driving mode, data voltages being applied to pixels of the panel during the first and the second display periods of said one frame period and not being applied to the pixels of the panel during the first and second non-display periods of said one frame period;
• applying, to the plurality of electrodes, a touch scan signal for a first duration in the first non-display period of said one frame period but not applying the touch scan signal to the plurality of electrodes during the second non-display period of said one frame period when the touch driving mode is a first touch driving mode;
• and
• applying, to the plurality of electrodes, the touch scan signal for a second duration in both the first and the second non-display periods when the touch driving mode is a second touch driving mode,
• wherein the first touch driving mode is an idle driving mode, and the second touch driving mode is an active driving mode,
• wherein the first duration is shorter than the second duration.