Array substrate, oled display panel and display device

An OLED display panel, comprising:

• an array substrate, wherein the array substrate comprises:
• a base substrate;
• and
• a pixel circuit disposed on the base substrate;
• wherein the pixel circuit at least comprises:
• a driving transistor,
• a storage capacitor, and
• a power supply voltage line;
• wherein one end of the storage capacitor is electrically connected with the power supply voltage line, and the other end of the storage capacitor is electrically connected with a grid electrode of the driving transistor;
• an active layer, a grid insulating layer, the grid electrode of the driving transistor, a first insulating layer, a storage electrode, a second insulating layer and the power supply voltage line are sequentially disposed on the base substrate;
• and
• the storage capacitor comprises:
• a first capacitor;
• and
• a second capacitor;
• wherein the first capacitor and the second capacitor are connected in parallel;
• the first capacitor comprises:
• the storage electrode;
• and
• a first electrode;
• wherein a layer where the first electrode is located is same as a layer where the grid electrode of the driving transistor is located;
• the second capacitor comprises:
• the storage electrode;
• and
• a second electrode;
• wherein a layer where the second electrode is located is same as a layer where the power supply voltage line is located, and
• the first electrode and the second electrode are electrically connected through a via hole penetrating through the first insulating layer and the second insulating layer.