Display panel circuit structure

A display panel circuit structure, comprising:

• a display area and an output bonding area located on a side of the display area;
• wherein the output bonding area comprises:
• a plurality of first bonding pads arranged in parallel at intervals, and a plurality of first connecting lines between corresponding first bonding pads of the first bonding pads;
• wherein each of the first bonding pads comprises:
• a first bottom pad, a first middle pad located above and electrically connected to the first bottom pad, and a first top pad located above and electrically connected to the first middle pad;
• wherein the first bottom pad and the first connecting lines are all located at a first metal layer, the first middle pad is located at a second metal layer, the first top pad is located at a transparent, electrically conductive layer, the first metal layer, the second metal layer, and the transparent, electrically conductive layer are stacked in order, an insulating interlayer is disposed between the first metal layer and the second metal layer, and a passivation layer is disposed between the second metal layer and the transparent, electrically conductive layer;
• wherein the display panel circuit structure further comprises:
• a test controlling area located on a side of the output bonding area away from the display area, a plurality of fifth connecting lines located between corresponding first bonding pads of the first bonding pads and the test controlling area, a plurality of sixth connecting lines located between corresponding first connecting lines of the first connecting lines and the test controlling area;
• wherein the fifth connecting lines and the sixth connecting lines are all located at the second metal layer;
• wherein each of the fifth connecting lines has an end electrically connected to the first middle pad of a corresponding first bonding pad of the first bonding pads, and the other end electrically connected to the test controlling area;
• and
• wherein each of the sixth connecting lines has an end electrically connected to a corresponding first connecting line of the first connecting lines, and the other end electrically connected to the test controlling area.