Rainbow 4520 i

Etchers are semiconductor processing tools that remove material from a wafer in a controlled pattern or across a defined surface. Etchers are used during device fabrication to transfer patterns, open films, or clear layers as part of integrated circuit and related microfabrication flows.

Etchers remove selected material from wafer surfaces by exposing the wafer to a process that attacks target films more readily than protected areas. Etchers generally work with masking layers or previously defined patterns so that material is removed where the process is intended to act. Etchers are used to shape features, open contact regions, or clear deposited layers while leaving other regions comparatively intact.

Etchers sit after a film has been deposited or after a masking pattern has been formed on the wafer. Etchers are commonly used after lithography when a patterned resist or hard mask defines where material should remain and where material should be removed. Etchers are commonly followed by resist stripping, cleaning, inspection, or a subsequent deposition or implant step, depending on the process module.

Etchers are used in semiconductor manufacturing to define device structures and interconnect features. Etchers are applied in processes that open dielectric layers, transfer patterns into conductive or insulating films, and prepare wafers for later integration steps. Etchers are also used in related microfabrication work where controlled material removal is needed on patterned substrates.