Display panel motherboard, method for testing display panel motherboard and display panel

A display panel motherboard comprising:

• a display region, wherein the display region comprises a plurality of display panel main bodies disposed side by side, and the plurality of display panel main bodies are each provided with a signal input end;
• and
• a testing region formed with a testing circuit, wherein the testing circuit comprises a first signal end and a control circuit, a signal channel is formed between the first signal end and the signal input end of each of the plurality of display panel main bodies, so that the first signal end controls a corresponding one of the plurality of display panel main bodies to display after receiving a first control signal;
• the control circuit is connected to the signal channel between the first signal end and the plurality of signal input ends, so as to control the signal channel between the first signal end and at least a portion of the plurality of signal input ends of the plurality of display panel main bodies to be on or off.