Method for detecting array substrate of display panel

A method for detecting an array substrate of a display panel, the array substrate being used for driving an electroluminescent device, the array substrate comprising pixel electrodes arranged in an array and an array of pixel switches for driving the pixel electrodes, wherein the method comprises steps of:

• S1, applying a first driving signal to a manufactured array substrate, monitoring a first voltage of the pixel electrodes;
• S2, forming a second electrode on each of the pixel electrodes of the array substrate, each second electrode being in contact with a corresponding pixel electrode;
• S3, applying a second driving signal to the array substrate formed with the second electrode, monitoring a second current flowing through the second electrode,
• wherein each pixel electrode is one of a cathode and an anode of the electroluminescent device, and each second electrode is the other one of the cathode and the anode of the electroluminescent device.