Back end of line
Part of manufacturing process used to create integrated circuits / From Wikipedia, the free encyclopedia
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Back end of the line or back end of line (BEOL) is a process in semiconductor device fabrication that consists of depositing metal interconnect layers onto a wafer already patterned with devices. It is the second part of IC fabrication, after front end of line (FEOL). In BEOL, the individual devices (transistors, capacitors, resistors, etc.) are connected to each other according to how the metal wiring is deposited.