Thin film transistor, method of fabricating the same, array substrate and display device

A thin film transistor, comprising:

• a semiconductor layer;
• and
• a source electrode and a drain electrode provided on the semiconductor layer, wherein
• the semiconductor layer comprises a source area that corresponds to the source electrode, a drain area that corresponds to the drain electrode and an intermediate area that is provided between the source area and the drain area and corresponds to a gap between the source electrode and the drain electrode;
• and
• the thin film transistor further comprises a conductive film that does not react with acid solution, and the conductive film is provided to connect the source area and the source electrode and to connect the drain area and the drain electrode.