Mark 8

Tokyo Electron Mark 8 is a lithography system. Machines of this class expose a photosensitive layer with an optical pattern so that selected areas can be retained or removed after development.

Such systems are central pattern-definition tools in semiconductor manufacturing and related precision patterning work. They are used wherever a controlled image must be transferred onto a substrate before etching, deposition, or other downstream processing.

A lithography system presents a pattern to the coated substrate through an optical path or equivalent projection arrangement. The exposed resist responds to the projected image, creating a latent pattern that can be made visible and used as a processing mask.

In general, the machine aligns the substrate to previously formed features, controls exposure across the target area, and repeats the imaging sequence as needed across the workpiece. The result is a patterned resist template that reflects the intended circuit geometry or other fine structures.

This class of machine sits early in the pattern-transfer portion of the process flow, after surface preparation and resist coating and before development, etching, implantation, or lift-off steps. It is one of the main points at which design information becomes a physical pattern on the wafer.

Machines of this class are used for semiconductor device fabrication and other microfabrication tasks that require precise repeated pattern placement. They support the creation of transistors, interconnect structures, alignment marks, and other fine features on processed substrates.