An array substrate, a manufacturing method thereof and a display panel are disclosed. The array substrate includes: a base substrate, gate scanning lines, a gate-insulating layer, an active layer, data lines, a passivation layer, and pixel electrodes; the array substrate further includes: a bridge structure and a connection line corresponding to each data line; the bridge structure is located on the passivation layer and is provided in a same layer as the pixel electrodes; each connection line is located on the base substrate and is connected with the data line, through the bridge structure in an LED region and in a region under a scribe line of a counter substrate. Therefore the problem of defective display caused by breakage of data lines can be solved, and the display effect of a liquid crystal display device can be improved.