OLED touch display panel

An Organic Light Emitting Diode (OLED) touch display panel, comprising:

• a Thin Film Transistor (TFT) array substrate, comprising:
• an active layer;
• a gate insulation layer covering the active layer;
• a gate line layer disposed on the gate insulation layer;
• an inter-layer insulation layer covering the gate line layer and the gate insulation layer;
• a data line layer disposed on the inter-layer insulation layer;
• and
• a planarizing layer covering the data line layer;
• wherein the gate line layer comprises a gate line and a gate electrode, the data line layer comprises a data line, a source electrode and a drain electrode, the gate line extends along a first direction, and the data line extends along a second direction intersecting with the first direction;
• an OLED element formed on the TFT array substrate and comprising an upper electrode, a lower electrode and an organic layer between the upper electrode and the lower electrode, wherein the lower electrode is electrically connected with the source electrode or the drain electrode via a first contact hole in the planarizing layer;
• a first touch line extending along the first direction and disposed in the same layer with the gate line;
• a second touch line extending along the second direction, intersecting with the first touch line and disposed in the same layer with the data line;
• and
• a touch sensing electrode disposed in the same layer with the lower electrode of the OLED element, spaced from the lower electrode and electrically connected with the second touch line via a second contact hole in the planarizing layer.