Patent ID: 7118947

Claim:
A method of fabricating a thin film transistor substrate of a horizontal electric field type LCD, comprising the steps of: forming a gate metal pattern group including a gate line, a common line, a gate electrode, a common electrode, a pixel electrode, a lower gate pad electrode, and a lower common pad electrode on a substrate, wherein the gate electrode is connected to the gate line, the common line is parallel with the gate line, the lower common pad electrode is connected to the common line, portions of the common electrode is extended from the common line into a pixel area, a portion of pixel electrode extended into the pixel area, and the extended portions of the pixel area and the common electrode form a horizontal electric field in the pixel area; providing a gate insulating film on the substrate and the gate metal pattern group; forming a semiconductor pattern including an active layer and an ohmic contact layer on the gate insulating film; forming a source/drain metal group including a data line, a source electrode, a drain electrode, a lower pad electrode, a first upper storage electrode, and a second upper storage electrode on the semiconductor pattern, wherein the data line crosses the gate line and the common line, the source electrode and the lower data pad electrode are connected to the data line, and the drain electrode is formed opposite to the source electrode; providing a protective film on the source/drain metal group and the thin film transistor to protect the thin film transistor; and patterning the protective film and the gate insulating film disposed on the substrate to provide first to fourth contact holes and forming a transparent conductive pattern group including an upper gate pad electrode, an upper common pad electrode, and upper data pad electrode, a contact electrode, wherein the transparent conductive pattern group is disposed within the first to fourth contact holes such that the transparent conductive pattern group is absent from the entire upper surface of the protective film.