back-end-of-line
/ˈbæk ɛnd əv laɪn/
the stage of chip fabrication that creates the metal interconnect layers connecting transistors to each other
back-end-of-line in a sentence
“Back-end-of-line processing can involve over a dozen copper wiring layers.”
Origin of back-end-of-line
Manufacturing term distinguishing the wiring phase from the transistor-formation phase
Related Words
transistor
a semiconductor device that amplifies or switches electrical signals; the fundamental building block of modern electronics
semiconductor
a material whose electrical conductivity falls between that of a conductor and an insulator, enabling precise control of current
wafer
a thin, circular disc of semiconductor material (typically silicon) on which integrated circuits are fabricated
die
a single chip cut from a wafer; the individual integrated circuit before packaging
lithography
the process of printing microscopic circuit patterns onto silicon using light or other radiation
doping
introducing controlled impurities into a semiconductor to alter its electrical properties