Patent ID: 7517620

Claim:
A method of fabricating a liquid crystal display device, comprising: forming a gate line and a data line crossing each other and defining a pixel region; forming a thin film transistor at each intersection of the gate and data lines, wherein the thin film transistor includes a gate electrode, an active layer, a source electrode, and a drain electrode; forming a first insulating layer to cover the thin film transistor and the data line; forming a black matrix on the first insulating layer, except for a portion of the drain electrode; forming a second insulating layer on the first insulating layer to cover the black matrix; patterning the first and second insulating layers to expose a portion of the drain electrode; forming a first transparent electrode layer over a surface of the substrate to cover the patterned second insulating layer and the exposed portion of the drain electrode; patterning the first transparent electrode layer to form a pixel electrode in the pixel region, wherein the pixel electrode contacts the exposed portion of the drain electrode; forming a color filter on the pixel electrode; forming a second transparent electrode layer over a surface of the substrate to cover the color filter and the pixel electrode, wherein the second transparent electrode is in an amorphous state, wherein the second transparent electrode layer is formed of one of indium zinc oxide and indium tin oxide; irradiating a light to a portion of the second transparent electrode layer corresponding to the pixel region so as to crystallize the irradiated portion of the second transparent electrode; and forming a second pixel electrode in the pixel region by removing a non-crystallized portion of the second transparent electrode layer by applying oxalic acid [(COOH) 2 .H 2 O+H 2 O] to the partially irradiated second transparent electrode layer, wherein the second pixel electrode contacts the first pixel electrode over the black matrix.