Patent ID: 6093580
Filing Date: 2000-07-25
Classification: H01L

Abstract:
A method of forming a contact finger assembly for a photosensitive element array comprising:forming a contact pad foundation comprising a source and drain (S-D) electrode conductive material and disposed over a substrate on which said array is disposed, said array comprising a plurality of thin film transistors and photodiodes;depositing a thin film transistor (TFT) passivation layer comprising SiO.sub.x and a diode passivation layer comprising SiN.sub.x over said contact pad foundation;forming a contact pad via through said diode passivation layer and through said transistor passivation layer to expose a portion of said contact pad foundation, said via having sloped sidewalls; anddepositing a common electrode material layer to overlay said diode passivation layer, the exposed sloped sidewalls in said via and the exposed portion of said contact pad foundation.