Centris SYM 3 YVM

The Centris SYM 3 YVM belongs to a class of semiconductor production equipment that removes material from a wafer surface using plasma-based or reactive chemistry. Etch systems are a principal patterning operation in chip manufacturing, along with lithography and film deposition.

The Centris SYM 3 YVM is a plasma etch tool. In plasma etching, a process gas is introduced into a vacuum chamber and energized by an electrical field to form a discharge. The discharge generates reactive species that remove material from the wafer surface.

An etch system of this class typically holds the wafer on a temperature-controlled electrode inside the chamber. Process gases enter from above and are pumped out from below, maintaining a controlled pressure. The electrical bias on the wafer controls the energy of ions arriving at the surface, which gives the etch its directional character.

In a semiconductor fabrication line, the Centris SYM 3 YVM performs etch operations after lithographic patterning. Upstream, a resist or hardmask layer is patterned. Downstream, remaining resist is stripped and the wafer is cleaned before the next deposition or oxidation step.

The etch step defines the geometry of active areas and interconnections. Because etch is a subtractive process, it is paired with deposition steps that build up the films to be patterned.

Etch applications include contact openings, vias, trenches, and interconnect lines.