Patent ID: 7335538

Claim:
A method for manufacturing a bottom substrate of a liquid crystal display device, comprising the following steps: (a) providing a substrate having a transparent electrode layer and a metal layer; wherein the transparent electrode layer is located between the substrate and the metal layer; (b) forming a patterned photoresist on the metal layer, wherein the patterned photoresist has a first thickness and a second thickness; (c) etching the patterned photoresist, the transparent electrode layer, and the metal layer over the substrate to define a signal line, a thin film diode area, a pixel area, and a conductive electrode-line; wherein the thin film diode area has the transparent electrode layer, the metal layer, and a gap; and (d) forming an oxidized layer on partial surface of the metal layer; wherein the gap of the thin film diode is filled with the oxidized layer.