Patent ID: 10128183

Abstract:
A method of forming a conductive via comprises forming a structure comprising an elevationally-extending-conductive via and a conductive line electrically coupled to and crossing above the conductive via. The conductive line comprises first conductive material and the conductive via comprises second conductive material of different composition from that of the first conductive material. The conductive line and the conductive via respectively having opposing sides in a vertical cross-section. First insulator material having k no greater than 4.0 is formed laterally outward of the opposing sides of the second conductive material of the conductive via selectively relative to the first conductive material of the opposing sides of the conductive line. The first insulator material is formed to a lateral thickness of at least 40 Angstroms in the vertical cross-section. Second insulator material having k greater than 4.0 is formed laterally outward of opposing sides of the first insulator material in the vertical cross-section. Additional method aspects, including structure independent of method of fabrication, are disclosed.