Pitch multiplication is a class of technologies for manufacturing integrated circuits (ICs), developed for photolithography to enhance the feature density. Pitch doubling or double patterning
is a technique for increasing the number of features in a given area. Pitch doubling is a process of printing a pattern twice, with the second pattern offset by half the first pattern. The second pattern is then used as a mask to print the desired pattern.
Pitch doubling is a technique that is used to print