Driver integrated circuit and display apparatus including the same

A driver integrated circuit (IC) for a display apparatus, the display apparatus comprising a panel including a plurality of touch electrodes disposed in a display area and one or more supply lines which are disposed in a non-display area outside the display area, a touch auxiliary signal supply circuit, a printed circuit board electrically connected to the panel, and a connection film connected to the panel and the printed circuit board,

• wherein the one or more supply lines are configured to transfer at least a touch auxiliary signal that has a phase and a potential difference mimicking a phase and a potential difference, respectively, of a touch signal supplied to the plurality of touch electrodes, during a touch sensing period,
• the driver integrated circuit (IC) is configured to supply the touch signal to the plurality of touch electrodes during the touch sensing period,
• the touch auxiliary signal supply circuit is configured to supply the touch auxiliary signal to the one or more supply lines during the touch sensing period,
• the connection film comprises one or more electricity lines, and
• the touch auxiliary signal is supplied to the one or more supply lines through the one or more electricity lines of the connection film during the touch sensing period.