THIN FILM TRANSISTOR SUBSTRATE AND DISPLAY DEVICE

摘要

Provided is a thin film transistor substrate which has an aluminum alloy film, which constitutes source/drain wirings, directly connected with a transparent electrode, has excellent source/drain wiring characteristics and excellent gate wiring characteristics, and is manufactured by remarkably simplified process. The thin film transistor substrate is provided with a gate wiring, and the source wiring and the drain wiring which orthogonally intersect with the gate wiring. The thin film transistor substrate is characterized in that the composition of a single layer aluminum alloy film constituting the gate wiring and that of a single layer aluminum alloy film constituting the source wiring and the drain wiring are the same. Furthermore, a display device provided with the thin film transistor substrate is also provided.