The present invention includes a liquid crystal display device having an
oxide film having high adhesiveness to a substrate to thereby prevent
oxidation of a wiring material or the like, and includes, an electrode or
a terminal electrode having high conductivity, and a manufacturing method
therefor. Consequently, in the present invention, a liquid crystal
display device has an electrode terminal of a TFT substrate, wherein the
electrode is formed on an insulator and is comprised of a conductive
layer mainly consisting of copper and an oxide covering an outer part,
further the oxide is a layered structure of transparent electrodes, the
layered portion having ohmic contact, and the oxide mainly consists of
manganese oxide.