Touch display driving device and touch display driving method

Abstract

A touch display driving device according to one aspect of the present disclosure capable of maintaining a touch coordinate report rate at a constant level even in a low-speed driving mode in which a display refresh rate decreases includes a touch driver that performs a touch scan for acquiring real touch coordinates when a touch synchronization signal that determines a touch scan period and a display driving period is at a first level; and a touch micro controller unit that reports virtual touch coordinates at an end point of a processing time for calculating the real touch coordinates, detects a level of the touch synchronization signal for each touch report cycle determined according to a predetermined touch coordinate report rate after the end point, and reports any one of the virtual touch coordinates and the real touch coordinates depending on the detected level of the touch synchronization signal.

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