Clean Track Lithius

A coater and developer track is lithography support equipment used to apply, bake, develop, and clean photoresist-coated wafers around the exposure step. A clean track generally serves as the material handling and wet-processing side of a photolithography cell, linking resist preparation steps before exposure with development steps after exposure.

Coater and developer tracks generally move wafers through enclosed process modules and transfer stages in a defined sequence. A clean track typically dispenses liquid resist or related chemicals onto a rotating wafer for uniform coating, sends the wafer through temperature-controlled bake modules, and later routes the exposed wafer to developer and rinse modules that reveal the latent image. Clean tracks generally integrate wafer handling, recipe control, and contamination-managed transport so each wafer receives the same sequence of wet and thermal steps.

A Clean Track Lithius fits in the photolithography flow around the scanner or aligner exposure operation. The coater side generally prepares wafers with resist and conditioning bakes before exposure, while the developer side generally performs post-exposure processing to convert the exposed pattern into a developed resist image for downstream etch, implant, plating, or deposition pattern transfer.

Coater and developer tracks are used for semiconductor lithography processes that rely on photoresist patterning. Such tools support resist coating and development for pattern definition in front-end and back-end wafer processing, including layers that will later be etched, implanted, cleaned, or otherwise selectively processed through the resist mask.