Patent ID: 7554162

Claim:
A thin film transistor substrate comprising: a transparent insulating substrate; a thin film transistor on the transparent insulating substrate; a transparent picture element electrode over the thin film transistor; a first electrode electrically connecting the transparent picture element electrode and the thin film transistor, the first electrode being distinct from said thin film transistor and including a first metal layer and a second metal layer on the first metal layer, the first metal layer has a region not overlapped by the second metal layer, the first electrode being distinct from the thin film transistor based on at least an interlayer insulating layer being between the first electrode and the thin film transistor; and an insulating layer over said first electrode, said transparent picture element electrode contacting said first electrode through a contact hole formed in said insulating layer, wherein the second metal layer has lower reflectance than the first metal layer, and wherein said second metal layer is formed only in the immediate vicinity of the contact hole.