Display apparatus with crack detection electrodes disposed in different layers

A display apparatus comprising:

• a substrate having a display area and a peripheral area outside the display area;
• a plurality of pads disposed at one side of the peripheral area;
• and
• a first, a second, and a third conductive layers including a first, a second, and a third crack detection electrodes, respectively,
• wherein the first, the second, and the third crack detection electrodes extends along one edge of the substrate in the peripheral area, and
• wherein the plurality of pads includes a first pad electrically connected to a first end portion of the first crack detection electrode, a first end portion of the second crack detection electrode, and a first end portion of the third crack detection electrode;
• wherein at least one of the first, second, or third crack detection electrodes includes a plurality of zigzag patterns that are connected to each other in series;
• wherein the first, the second, and the third crack detection electrodes substantially overlap each other at least in a section extending along the one edge of the substrate;
• an auxiliary electrode extending along the one edge in the peripheral area and electrically connecting the first end portion of the first crack detection electrode, the firstend portion of the second crack detection electrode, and the first end portion of the third crack detection electrode to the first pad.