In-cell type touch display device including switching part and method of driving the same

摘要

An in-cell type touch display device includes a panel including a plurality of electrodes, a display driver integrated circuit (IC) and a switching part, the plurality of electrodes being divided into a plurality of groups; and a touch IC generating a touch scan signal and applying the touch scan signal into the switching part, wherein the display driver IC generates a common voltage and applies the common voltage into the switching part, and wherein the switching part applies the common voltage into the plurality of electrodes or sequentially applies the touch scan signal into the electrodes in the plurality of groups according to a driving mode of the panel.

主权项

1. An in-cell type touch display device, comprising:
a panel including a plurality of electrodes, a display driver integrated circuit (IC) and a switching part, the plurality of electrodes being divided into a plurality of groups; and a touch IC generating a touch scan signal and applying the touch scan signal to the switching part, wherein the display driver IC generates a common voltage and applies the common voltage to the switching part, wherein the switching part applies the common voltage to the plurality of electrodes when a driving mode of the panel is a display driving mode, and sequentially applies the touch scan signal to the electrodes in the plurality of groups with respect to each group when a driving mode of the panel is a touch driving mode, wherein the plurality of groups includes a first group and a second group, wherein the touch driving mode includes a first touch driving mode and a second touch driving mode next to the first touch driving mode, wherein the switching part sequentially applies the touch scan signal to the electrodes in the first group when a driving mode of the panel is the first touch driving mode, and sequentially applies the touch scan signal to the electrodes in the second group when a driving mode of the panel is the second touch driving mode, wherein the display driver IC is configured to:
generate a sync signal for the driving mode of the panel,generate a control signal for supplying the common voltage to the plurality of electrodes when the sync signal is a first sync signal for the display driving mode, andsequentially connect the electrodes in the plurality of groups with the touch IC when the sync signal is a second sync signal for the touch driving mode, and wherein the touch IC detects a self-capacitive type variation of an electrostatic capacitance of each of the plurality of electrodes.