6 A

Thermal processing ovens in semiconductor work are used to heat wafers in a controlled chamber environment. HMDS ovens are generally used in lithography preparation to promote photoresist adhesion by treating wafer surfaces before resist coating.

A thermal process oven heats substrates inside an enclosed chamber for a defined recipe. HMDS treatment ovens generally expose wafer surfaces to a heated priming environment so the surface condition is changed before later coating steps. Thermal process ovens generally rely on controlled temperature and atmosphere within the chamber rather than direct patterning or material removal.

HMDS priming equipment is typically placed in the lithography preparation sequence after wafer cleaning and dehydration and before photoresist coating. The purpose of this class of tool is to improve adhesion between the wafer surface and the resist layer used in later exposure and development steps.

HMDS ovens are used for wafer surface preparation ahead of photolithography. Such tools are applied where resist adhesion to oxide or other moisture-sensitive surfaces is important for stable pattern transfer during downstream lithography processing.