Patent ID: 11869807
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method of claim 4, wherein the via metallization layer and the first metallization layer are separated by an etch stop layer, and wherein the via metallization layer and the first metallization layer independently comprise one or more of copper (Cu), ruthenium (Ru), nickel (Ni), cobalt (Co), chromium (Cr), iron (Fe), manganese (Mn), titanium (Ti), aluminum (Al), hafnium (Hf), tantalum (Ta), tungsten (W), vanadium (V), molybdenum (Mo), palladium (Pd), gold (Au), silver (Ag), platinum (Pt), indium (In), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), or cadmium (Cd).