Patent ID: 7556988
Filing Date: 2009-07-07
Classification: G02F,H01L

Abstract:
1. A method of fabricating a thin film transistor substrate of horizontal electric field type, said method comprising: a first mask process of forming a gate line, a gate electrode and a lower gate pad electrode connected to the gate line, a first common line in parallel to the gate line and a lower common pad electrode connected to the first common line from a first conductive layer on a substrate; a second mask process of depositing a gate insulating film, forming a semiconductor pattern on a predetermined region of the gate insulating film, and forming a data line crossing the gate line and the first common line, a source electrode and a lower data pad electrode connected to the data line, a drain electrode opposed to the source electrode, a pixel electrode connected to the drain electrode, a second common line in parallel to the data line and a common electrode connected to the second common line and being parallel to the pixel electrode from a second conductive layer on said semiconductor pattern; and a third mask process of depositing a protective film, patterning the protective film and the gate insulating film to define first to third contact holes for exposing the lower gate pad electrode, the lower common pad electrode and the lower data pad electrode, respectively, and forming an upper gate pad electrode, an upper common pad electrode and an upper data pad electrode from a third conductive layer within the first to third contact holes, respectively.