Array substrate, liquid crystal display device and method of manufacturing array substrate

摘要

A gate insulating film is formed on a glass substrate on which a plurality of polysilicon films are formed as islands. A first meal layer formed on the gate insulating film is patterned to form gate electrodes on the gate insulating film facing a polysilicon layer which gives rise to thin film transistors. A second metal layer is formed on the gate insulating film to cover the gate electrodes. Wiring portions are stacked on the gate electrodes of the thin film transistors.