Ultra Furnace for Dry Batch Processing of Wafers


The Ultra Furnace is the first system developed for multiple dry-processing applications. Initially optimized to deliver high performance for low-pressure chemical vapor deposition (LPCVD), the Ultra Furnace also leverages the same platform to be used for oxidation and annealing processes, as well as for atomic layer deposition (ALD). This achievement represents a two-year collaboration between ACM’s R&D teams located in China and Korea.


Deposition processes utilize process gases at a high temperature to react with each other on a silicon wafer, forming a silicon oxide or nitride layer on the wafers. The Ultra Furnace system is intended for batch processing of up to 100, 12-in. (300 mm) wafers. The innovative system design combines newly developed hardware that improves durability, with the company’s proven software technology and a proprietary control system and algorithm. This enables the tool to provide stable control of pressure, gas flow rate, and temperature.


While the Ultra Furnace system targets LPCVD processes, with a few changes to the components and layout, each tool can address other target applications. About 85 percent of the hardware configuration remains unchanged, so the alterations for the new application can be achieved efficiently.

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