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 mask and/or set:
“But today I set the bed afire
and smoke is filling the room,
it is getting hot enough for the walls to melt,
and the icebox, a gluey white tooth.
I have on a mask in order to write my last words,
and they are just for you....”
—Anne Sexton (1928–1974)
“Not until the advent of Impressionism does the repudiation of principles set in which opened the way for the burlesque parade of the fashionable and publicity-crazed modernities of our century.”
—Johan Huizinga (1872–1945)