Patent ID: 7928429
Filing Date: 2011-04-19
Classification: H01L

Abstract:
1. A thin film transistor, comprising: a substrate; a buffer film arranged directly on the substrate and including a plurality of concave units, each of the plurality of concave units being separated from each other by a distance, the concave units being spaced-apart from the substrate, wherein the buffer film comprises one or more layers, each of said one or more layers being either a silicon oxide film or silicon nitride film; source and drain electrodes arranged within the plurality of concave units in the buffer film, the source and drain electrodes being spaced-apart from the substrate, a depth of the concave units being determined according to a thickness of the source and drain electrodes; a semiconductor layer arranged on the entire substrate to cover the source and drain electrodes and the buffer film; a gate insulating film arranged on the semiconductor layer; and a gate electrode arranged on the gate insulating film.