Patent ID: 7622809

Claim:
A display device in which an Al alloy film and a conductive oxide film are directly connected without interposition of refractory metal and some or all of Al alloy components deposit or are concentrated at the interface of contact between the Al alloy film and the conductive oxide film, wherein the Al alloy film comprises 0.1 to 6 at % of at least one element selected from the group consisting of Ni, Cu and Ge, and 0.1 to 2 at % of at least one element selected from the group consisting of Rh, Ir, La, Ce, Pr, Gd, Tb, Eu, Ho, Er, Tm, Yb, Lu and Dy as alloy components, and wherein the components selected from the group consisting of Ni, Cu and Ge concentrate at the interface of contact in a layer of thickness of from 1 to 5 nm.