Mask Set

A mask set or a photomask set is a series of electronic data that define geometry for the photolithography steps of semiconductor fabrication. Each of the physical masks generated from this data is called a photomask.

A mask set for a modern process typically contains as many as twenty or more masks, each of which defines a specific photolithographic step in the semiconductor fabrication process. Examples of masks include:

  • p-well
  • n-well
  • active
  • poly
  • p-select
  • n-select
  • contact
  • metal1, 2, 3...

For more information, see photolithography and semiconductor manufacturing.

Famous quotes containing the words set and/or mask:

    If we cannot find a way to interpret the utterances and other behavior of a creature as revealing a set of beliefs largely consistent and true by our standards, we have no reason to count that creature as rational, as having beliefs, or as saying anything.
    Donald Davidson (b. 1917)

    Mediocrity is the most effective mask a superior spirit can wear, because to the great majority, which is to say, to the mediocre, it will not suggest a disguise:—and yet it is precisely for their sake that he puts it on—so as not to arouse them, and, indeed, not infrequently to avoid this out of pity and benevolence.
    Friedrich Nietzsche (1844–1900)