A display panel is disclosed, which includes: a first substrate; a first metal line disposed above the first substrate and having a first surface and a first side, wherein the first side connects to the first surface, and the first side has a concave shape; and a sealant unit in contact with the first metal line, wherein the first metal line includes a first metal layer, a second metal layer and a third metal layer, the second metal layer locates between the first metal layer and the third metal layer, the sealant covers at least a portion of the first metal layer, and a part of the sealant locates between the first metal layer and the third metal layer.