Patent ID: 8120742

Claim:
A manufacturing method of display panel, comprising: providing a first substrate having a display region and a sealant region; forming a pixel array within the display region of the first substrate; forming a driving circuit and a common electrode within the sealant region of the first substrate, wherein the driving circuit comprises a plurality of switch devices and a plurality of turn-line structures; forming a planar layer on the first substrate to cover the pixel array, the driving circuit and the common electrode; patterning the planar layer to form a contact hole in the planar layer and to make the thickness of the planar layer at the turn-line structure of the driving circuit less than the thicknesses of other portions; forming a conductive layer on the planar layer, wherein the contact hole is filled with the conductive layer so that the conductive layer is electrically connected to the common electrode; forming a sealant within the sealant region, wherein a plurality of conductive balls is distributed in the sealant; providing a second substrate and forming an electrode layer on the second substrate; and assembling the first substrate with the second substrate together and injecting a liquid crystal layer into the display region, wherein the conductive layer on the first substrate is electrically connected to the electrode layer of the second substrate through the conductive balls.