Patent ID: 6545308
Filing Date: 2003-04-08
Classification: H01L,Y10S

Abstract:
An electrical device, comprising:a substrate having a surface thereon; an oxide layer that: has a top surface; is situated upon the surface of the substrate; and has a first recess therein that extends between the top surface of the oxide layer and the substrate; a polysilicon layer that: has a top surface; is situated on the oxide layer; and has a second recess therein that extends between the top surface of the polysilicon layer and the top surface of the oxide layer, wherein the first and second recesses are each funnel-shaped; a first electrically conductive layer within the first and second recesses and upon the substrate; an insulative layer within the second recess and upon the first electrically conductive layer; and a second electrically conductive layer within the second recess and upon the insulative layer.