Self-capacitance organic light emitting touch display apparatus

A self-capacitance organic light emitting touch display apparatus comprising:

• a thin film transistor substrate having a plurality of thin film transistors, a plurality of pixel electrodes, a plurality of gate lines and a plurality of data lines arranged on a surface of the thin film transistor substrate, wherein the thin film transistors are respectively connected to the pixel electrodes, the gate lines and the data lines corresponding to the thin film transistors;
• a common electrode layer;
• an organic light emitting material layer arranged between the common electrode layer and the thin film transistor substrate;
• at least one touch electrode layer arranged on a side of the common electrode layer, and the side opposite to the organic light emitting material layer, the at least one touch electrode layer comprising a plurality of touch sensing electrodes;
• a display controller having a display power source, and electrically connected to the thin film transistors, the pixel electrodes and the common electrode layer;
• a touch controller comprising a touch power source, the touch controller sequentially or randomly applying a capacitance exciting signal to a selected touch sensing electrode, and sensing a touch sensing signal at the selected touch sensing electrode, the touch controller also applying a shielding reflection signal to the common electrode layer or a reference point of the display controller, for the touch controller performing touch sensing, and no common current loop being present between the display controller and the touch controller during touch sensing;
• wherein the display controller has a display grounded end and the touch controller has a touch grounded end, and the display grounded end is different from the touch grounded end;
• and
• wherein the display controller is electrically connected with the touch controller through only one physical connection point during touch sensing.