Patent ID: 9001299
Filing Date: 2015-04-07
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device comprising: a first substrate; a gate electrode and a gate line, each comprised of a triple layer, wherein the triple layer includes a second wiring formed on the first substrate, a metal oxide film formed on the second wiring and a first wiring formed on the metal oxide film, the metal oxide film being disposed between and in direct contact with the first and second wirings, wherein the first wiring is made of copper and the second wiring is made of a barrier metal, wherein the barrier metal is made of a pure metal material of molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), ferrum (Fe), ruthenium (Ru) or osmium (Os), wherein the metal oxide film is made of oxide of materials used for the barrier metal, wherein the first wiring and the metal oxide film are patterned in the same shape as the second wiring to prevent spreading of copper to the first substrate; a first insulating layer on the first substrate with the gate electrode and the gate line formed thereon; an active pattern on the first insulating layer; a source electrode, a drain electrode and a data line on the first substrate with the active pattern formed thereon; a second insulating layer on the first substrate with the source electrode, the drain electrode and the data line formed thereon; and a second substrate coupled to the first substrate in a facing manner.