THIN FILM TRANSISTOR AND PREPARATION METHOD THEREOF, ARRAY SUBSTRATE AND PREPARATION METHOD THEREOF, AND DISPLAY DEVICE

摘要

The present invention relates to the technical field of displays. Provided are a thin film transistor, array substrate and preparation method thereof, and display device, the preparation method comprising: forming a pattern comprising a source electrode (305), a drain electrode (306), and an active layer (304) through a one-time patterning process; the source electrode (305), the drain electrode (306) and the active layer (304) being disposed on the same layer, the active layer (304) being located between the source electrode (305) and the drain electrode (306).