A thin film transistor (TFT) array substrate structure based on organic light-emitting diodes (OLEDs) may include multiple sets of TFT components, capacitors, common electrodes, and data signal lines, all of which are formed on a substrate. Each set of TFT components includes a driving TFT, and the driving TFT has a gate, a source, and a drain. A drain frame extends from the drain and surrounds a pixel block of the TFT array substrate structure, and a transparent conductive film is arranged in a region surrounded by the drain frame and is in contact with the drain frame.