H
ELECTRICITY
H01
ELECTRIC ELEMENTS
H01L
SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
H01L23/00
Details of semiconductor or other solid state devices
H01L23/52
Arrangements for conducting electric current within the device in operation from one component to another; , i.e. interconnections, e.g. wires, lead frames
H01L23/522
including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
H01L23/5226
Via connections in a multilevel interconnection structure