Patent ID: 7710507

Claim:
A method for manufacturing a lower substrate of a liquid crystal display device, comprising: (a) forming a patterned first metal layer, a first insulation layer, a patterned second metal layer, and a second insulation layer over a first surface of a substrate, wherein the first metal layer is covered by the first insulation layer, the second metal layer locates on the first insulation layer, and the second metal layer is covered by the second insulation layer; (b) forming a positive photoresist layer on the second insulation layer; (c) exposing the substrate from a second surface of the substrate, wherein the second surface is opposing to the first surface of the substrate; (d) exposing the substrate from the first surface by applying a mask above the positive photoresist on the second insulation layer; and (e) removing the reacted positive photoresist; (f) forming a transparent electrode layer on the second insulation layer and the residual positive photoresist; and (g) removing the residual positive photoresist and removing the transparent electrode layer on the residual positive photoresist.