A gate electrode (wiring) (40) having a Cu layer (40a) surrounded
by a coating film (40b) made of titanium or titanium oxide; a TFT
substrate (31) comprising the gate electrode (wiring) (40) and a
LCD comprising a pair of opposing substrates and a liquid crystal disposed between
the opposing substrates, wherein one of the pair of opposing substrates is a TFT
substrate (31), are disclosed.