OLED panel, driving method thereof and display device

A method of driving an OLED panel, the OLED panel having a plurality of pixel units arranged in rows and columns, each pixel unit comprising an OLED device,

• wherein the OLED panel comprises a plurality of regions arranged in a column direction, each region comprises at least one row of pixel units and has a cathode layer, the OLED devices in each region share the cathode layer in the region, the cathode layer of each region is disconnected from the cathode layer of any other region;
• the OLED panel comprises a cathode voltage supply circuit,
• the method comprises:
• during a display period of one frame of picture, sequentially supplying a scan signal to a plurality of rows of pixel units in a column direction, while separately supplying a cathode voltage comprising an operating level to the cathode layer of each of the plurality of regions by the cathode voltage supply circuit,
• wherein the cathode voltage supply circuit starts outputting the operating level to the cathode layer of at least one region at a time at least later than a time when all pixel units in the region receive the scan signal, and
• the cathode voltage supply circuit is configured to start outputting the operating level to the cathode layer in each region at a time different from a time at which the cathode voltage supply circuit starts outputting the operating level to the cathode layer in any other region.