Patent ID: 7470604

Claim:
A method for manufacturing a display device, comprising the steps of: forming a first conductive layer which has a non-light-transmitting property over a substrate which has a light-transmitting property; forming an insulating layer over the substrate and the first conductive layer; forming a mask layer selectively over the insulating layer overlapping with the first conductive layer; forming a photoactive substance over the insulating layer and the mask layer; forming at least a first region and a second region by passing light through the substrate and irradiating the photoactive substance with light; and removing the mask layer and the photoactive substance which is formed over the mask layer and forming a third region; and forming a second conductive layer at the second region and the third region, wherein the second conductive layer includes a conductive material, wherein a wettability of the second region with respect to the conductive material is higher than a wettability of the first region with respect to the conductive material, and wherein a wettability of the third region with respect to the conductive material is higher than a wettability of the first region with respect to the conductive material.