Display panel, display apparatus, and method of detecting crack in display panel

A display panel, comprising:

• display elements in a display area;
• a touch electrode layer at least partially in the display area, wherein the display elements and the touch electrode layer are absent in a window region that is at least partially surrounded by the display area;
• and
• a crack detection circuit;
• wherein the crack detection circuit comprising:
• an integrated circuit;
• and
• a first conduction loop electrically connected to the integrated circuit;
• wherein the first conduction loop comprises a window region crack detection line substantially surrounding the window region;
• at least a portion of the first conduction loop comprises a first metal line in a first layer and a second metal line in a second layer, the first metal line connected to the second metal through a via extending through a touch insulating layer;
• and
• the window region crack detection line comprises contiguously a first line portion extending clock-wisely around a first portion of a periphery of the window region, a second line portion extending counter-clock-wisely around the first portion of the periphery of the window region and a second portion of the periphery of the window region, and a third line portion extending clock-wisely around the second portion of the periphery of the window region.