Patent ID: 7599037

Claim:
A liquid crystal display comprising: a substrate; a first signal line assembly formed over the substrate, wherein the first signal line assembly comprises a first signal line, a first pad connected to the first signal line, a gate electrode connected to the first signal line, and a conductive electrode; a first nitrogen containing layer formed on the first signal line, the first pad, the gate electrode and the conductive electrode of the first signal line assembly to reduce formation of a high resistance oxide layer on the first signal line assembly; a second signal line assembly formed with a lower layer and an upper layer comprising a second signal line intersecting and insulated from the first signal line, a second pad, a source electrode, a drain electrode and a conductive pattern; a second nitrogen containing layer formed on the second signal line, the second pad, the source electrode, the drain electrode and the conductive pattern of the second signal line assembly, wherein the second nitrogen containing layer reduces formation of a high resistance oxide layer on the second signal line assembly; a protective layer formed over the second signal line assembly; a first contact hole formed in the protective layer exposing the drain electrode; and a pixel electrode formed over the protective layer, the pixel electrode being electrically connected to the drain electrode through the first contact hole, wherein the first and second nitrogen containing layers comprise one of an aluminum nitride layer, an aluminum alloy nitride layer, and an aluminum/neodymium alloy nitride layer.