Patent ID: 6255706
Filing Date: 2001-07-03
Classification: H01L,Y10S

Abstract:
A thin film transistor provided, on an insulating substrate, at least with a gate electrode and a scanning line connected thereto, a gate insulation film, a semiconductor layer, and source/drain electrodes and signal lines connected thereto, wherein at least one of (1) the gate electrode and/or the scanning line and (2) the source/drain electrodes and/or the signal lines comprises a laminated wiring structure in which a main wiring layer formed of a metal selected from Al and Cu or an alloy based on the metal is sandwiched between an underlying wiring layer and an overlaying wiring layer, the underlying and overlaying wiring layers being formed of a material based on a metal or alloy of metals and containing nitrogen, the metal being selected from Ti, Mo, W, Cr, Al and Cu, and the materials used in the underlying and overlaying wiring layers being different from each other.