Liquid crystal display device and wiring structure therefor

• Main Authors: Takahashi, Takuya, Sakaki, Yoichi, Ikuta, Isao, Tamura, Katsumi, Onisawa, Ken-ichi
• Format: Patent
• Language: English
• Published: 30.09.2003

The present invention relates to a liquid crystal display unit and a wiring structure of the liquid crystal display device, and particularly to an active matrix type liquid crystal display device (AM-LCD) which is driven by many thin-film transistors (TFT) and a wiring structure of the active matrix type liquid crystal display device. A wiring structure is provided, the wiring structure being formed by forming a laminated film of silver (Ag) or an alloy containing silver (Ag) as the major constituent and the other metallic material, and by forming a wiring pattern through a single process of photolithography.The wiring structure comprises a plurality of first parallel wires; a plurality of second parallel wires intersecting with the first parallel wires; and a plurality of active elements, each of the active elements being arranged at a position near an intersection of the first parallel wire and the second parallel wire and connected to the first parallel wire and the second parallel wire, wherein part or all of the first parallel wires and the second parallel wires are of a laminated structure of a layer made of silver (Ag) or an alloy containing silver (Ag) as a major constituent and a layer made of a metallic element having standard electrode potential of dissolution reaction lower than the standard electrode potential of silver (Ag) or an alloy containing said metallic element as a major constituent, and are formed through a single process of photolithography.