Patent ID: 6504175
Filing Date: 2003-01-07
Classification: H01L

Abstract:
A structure for forming at least two devices on a shared substrate, comprising:first and second contact regions over and in contact with the substrate; a first dielectric layer over and in contact with said first and second contact regions and the substrate; a layer of conductive material having first and second regions, said first region having a first crystalline state, said first crystalline state being amorphous silicon, and being located over and in contact with said first contact region, said second region having a converted first crystalline state, said converted first crystalline state being polysilicon, and being located over and in contact with said second contact region; a second dielectric layer over and in contact with said layer of conductive material; and a masking layer over and in contact with said second dielectric layer such that said masking layer overlays said first contact region but not said second contact region, said masking layer masking the first region of the layer of conductive material such that a process used to convert the first crystalline state of the layer of conductive material converts only the layer of conductive material in the second region thereof, leaving the first region of the layer of conductive material unconverted.