Patent ID: 11908775
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. The semiconductor device of claim 4, wherein the material of the first etch stop layer comprises at least one of nickel (Ni), copper (Cu), tungsten (W), titanium (Ti), tantalum (Ta), indium (In), molybdenum (Mo), manganese (Mn), cobalt (Co), tin (Sn), magnesium (Mg), rhenium (Re), beryllium (Be), gallium (Ga), aluminum (Al), or ruthenium (Ru), and
the material of the second etch stop layer comprises at least one of silicon (Si), carbon (C), oxygen (O), nitrogen (N), or hydrogen (H).