A driving circuit and a common electrode are located within a sealant region of the first substrate, wherein the driving circuit includes switch devices and turn-line structures. The common electrode is located within the sealant region of the first substrate. The planar layer is located on the first substrate, wherein the thickness of the planar layer at the turn-line structure of the driving circuit is less than the thicknesses of other portions. The conductive layer is located on the planar layer. A second substrate having an electrode thereon is disposed opposite to the first substrate. A liquid crystal layer is located within the display region between the first substrate and the second substrate. A sealant is located within the sealant region between the first substrate and the second substrate, and conductive balls are distributed in the sealant.