Thin film transistor, manufacturing method of thin film transistor, thin film transistor assembly, array substrate and display device

The invention relates to a thin film transistor, a manufacturing method of the thin film transistor, a thin film transistor assembly, an array substrate and a display device. The thin film transistor comprises a substrate as well as a grid electrode, a grid electrode insulation part, a semiconductor part, a source electrode and a drain electrode which are arranged on the substrate; the semiconductor is separated from the grid electrode by the grid electrode insulation part; the source electrode and the drain electrode are connected with the semiconductor part; the projections of the grid electrode and the semiconductor part on the substrate are not overlapped mutually. The grid electrode, the grid electrode insulation part, the semiconductor part, the source electrode and the drain electrode can be arranged on the same layer. Or, one part of the grid electrode insulation part is arranged between the layer, where the semiconductor part, the source and drain electrodes are positioned, and the substrate; the grid electrode is directly arranged on the substrate. Or, the semiconductor and the source and drain electrodes are directly arranged on the substrate on the same layer; one part of the grid electrode insulation part is arranged between the layer, where the grid electrode is positioned, and the substrate.