ETCHANT COMPOSITION FOR THE FORMATION OF A METAL LINE

摘要

The present invention relates to an etchant composition for the formation of a metal line. The etchant composition can wet-etch, in a batch, a single-layer film formed of one or more metals selected from a group consisting of titanium, titanium alloy, aluminum, and an aluminum alloy, or a multilayer film including a double-layer film, thus simplifying the etching process and improving productivity. Further, the etchant composition of the present invention has a high etching rate, prevents damage to a lower film and equipment, enables uniform etching, provides excellent etching characteristics, eliminates the need for expensive equipment, is advantageous when used for large display devices, and provides remarkable economical advantages.