DAVID PARKER / SEAGATE MICROELECTRONICS LTD / SCIENCE PHOTO LIBRARY DAVID PARKER / SEAGATE MICROELECTRONICS LTD / SCIENCE PHOTO LIBRARY
Fabrication of silicon-based integrated circuits (chips), showing a technician using a binocular microscope to check the alignment of a mask used in the photolithography stage of manufacture. Individual chips are constructed on a single wafer of crystalline silicon. The complicated pattern of embedded layers and zones which comprises each integrated circuit is created by successive imaging, etching and deposition or growth processes. Chips diced from the wafers being made here will be packaged in readiness for use as motor controllers in computer disk drives.
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