a type of semiconductor manufacturing equipment used to transfer patterns onto wafers through the use of photolithography and exposure. Aligners can "align" a new pattern on a reticle or mask to patterns already on the wafer, hence the name aligner.
Ref: 86308/2006-09-13

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Aligner (Aligner is pertaining to the type of semiconductor. ..)
exposure (An Exposure is Contact between a person and a ...)

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