THIN FILM TRANSISTOR SUBSTRATE AND DISPLAY PANEL HAVING THE SAME

摘要

A thin film transistor substrate comprises a base substrate and a thin film transistor. The base substrate comprises a gate line extended in a first direction and a data line extended in a second direction crossing the first direction. The thin film transistor comprises: a gate electrode connected to the gate line and the data line and arranged on the base substrate; a semiconductor pattern overlapping the gate electrode; and a source electrode and a drain electrode disposed on the semiconductor pattern and separated from each other. The source electrode comprises: a first source layer; a second source layer arranged on the first source layer; and a first dispersion prevention layer arranged between the first and the second source layer. The drain electrode comprises: a first drain layer; a second drain layer arranged on the first drain layer; and a second dispersion prevention layer arranged between the first and the second drain layer. Therefore, electrical characteristics of the thin film transistor can be improved to improve reliability of a display panel.