Organic thin film transistor array substrate, method for manufacturing the same and display device

An organic thin film transistor array substrate, comprising a pixel structure formed on a transparent substrate, wherein the pixel structure includes:

• a gate line, a data line, an organic thin film transistor, a pixel electrode, a common electrode line and a common electrode;
• the organic thin film transistor includes:
• a gate electrode, a gate insulating layer, an organic semiconductor layer, a source electrode and a drain electrode;
• above the data line, the source electrode, the drain electrode and the pixel electrode, there are disposed in order a first bank insulating layer and a second bank insulating layer from bottom to top;
• in the first bank insulating layer, there are provided a first through hole, a first opening and a second opening;
• the source electrode and the drain electrode are located on two sides of the first through hole;
• in the first opening, there is formed the gate line by printing, and in the second opening, there is formed the common electrode line by printing;
• in the first through hole, there are formed in order the organic semiconductor layer, the gate insulating layer and the gate electrode by printing from bottom to top, the gate electrode is connected with the gate line, and the organic semiconductor layer is connected with the source electrode and the drain electrode.