Corrosion resistant test lines

A display, comprising:

• a substrate;
• thin-film transistor circuitry on the substrate, wherein the thin-film transistor circuitry includes conductive thin-film layers that form an array of pixels;
• and
• a test line that extends outwardly from the thin-film transistor circuitry that forms the array of pixels to a substrate cut line at an edge of the substrate, wherein the conductive thin-film layers include a source-drain layer, a gate electrode layer, and an anode layer and wherein the test line is formed at least partly from the anode layer.

An organic light-emitting diode display, comprising:

• a substrate;
• thin-film transistor circuitry on the substrate that forms an array of pixels each of which includes a respective light-emitting diode;
• and
• a test line formed from a conductive layer in the thin-film transistor circuitry, wherein the test line extends outwardly from the thin-film transistor circuitry that forms the array of pixels to a substrate cut line at an edge of the substrate, wherein the test line has a portion with a plurality of parallel lines formed from the conductive layer that are shorted together, and wherein the parallel lines are cut along the substrate cut line at the edge of the substrate.