MA 8 BA 8 Gen 3 Mask

The SUSS MA 8 / BA 8 Gen 3 Mask Aligner is a lithography mask aligner used in semiconductor manufacturing.^[4]

A mask aligner is a contact or proximity lithography tool that aligns a photomask to a substrate and then exposes the coated surface to patterned radiation. The alignment step sets the mask pattern relative to the wafer before exposure, so the device transfers features into a photoresist layer.

In this class of equipment, the substrate is held on a stage, the mask is positioned above or against it, and the optical exposure path projects the mask pattern through a transparent or near-contact configuration depending on the process mode.

Mask aligners sit in the front-end lithography portion of the process flow, after wafer preparation and photoresist coating and before development and downstream pattern transfer steps.

They are used when precise mask-to-wafer registration is needed for defining patterns that will later be developed and used for etching, deposition patterning, or other transfer operations.

Mask aligners are used for patterning photoresist on substrates in semiconductor fabrication and related microfabrication work.

This equipment class is commonly used for processes that require repeated alignment of a mask to a wafer or other substrate during lithographic pattern formation.