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

摘要

A thin film transistor (TFT) and manufacturing method thereof, array substrate and manufacturing method thereof and display device; the TFT comprises a gate electrode (7), a source electrode (9), a drain electrode (10), an active layer (4) and a gate insulating layer (6); the gate insulating layer (6) is disposed above the active layer (4); the gate electrode (7), the source electrode (9), and the drain electrode (10) in the same layer are disposed above the gate insulating layer (6); the active layer (4) is connected to the source electrode (9) via a first connecting electrode (12b); the active layer (4) is connected to the drain electrode (10) via a second connecting electrode (12c). The TFT can be formed by a three-step patterning process, reducing process time, improving yield, and lowering costs.