Display panel and repairing method thereof

A method of repairing a display panel, comprising:

• determining a defective one of a plurality of signal lines, wherein the display panel includes an active area including a plurality of pixels and the signal lines, a repair line at least partially surrounding the active area and overlapping the signal line and the active area, a plurality of first transistors formed on a side of the active area, wherein one end of each of the first transistors overlaps with the repair line;
• cutting a peripheral point adjacent to a defect point indicative of a defect in the defective one of the plurality of signal lines;
• selecting a first transistor of the first transistors based on a type of test signal provided to the defective signal line;
• and
• connecting the repair line to the selected first transistor based on the type of test signal.

A display panel, comprising:

• an active area including a plurality of pixels and a plurality of signal lines electrically connected to the pixels;
• a repair line formed at least partially surrounding the active area and overlapping the signal line in the active area;
• a plurality of first transistors formed on a side of the active area, wherein one end of each of the first transistors overlaps the repair line at an overlapping point;
• a sealing portion configured to seal the active area, the repair line, and the first transistors, wherein the sealing portion surrounds the active area;
• and
• a pad portion formed outside the sealing portion and including i) a plurality of dummy pads respectively connected to the first transistors and ii) a plurality of driving pads respectively connected to the signal lines;
• a gate signal line electrically connected to the gates of the first transistors and configured to transmit a test starting signal to the first transistors;
• and
• a direct current (DC) line electrically connected to the signal lines and configured to transmit a test signal and a data signal to the pixels.