Teijin Develops Polishing Pads Using Ultra-fine Fiber

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Teijin Frontier Co., Ltd.and  the Teijin Group’ s fibers and products converting company, announced today that it has developed polishing pads that are expected to enhance silicon wafer quality control while also lowering production costs. The new silicon pads are made with nonwoven NANOFRONT® ultra-fine nanofiber, which is made with a flexible, water-absorbent polymer impregnated with polyurethane resin.

Features of the silicon pads follow:
·         Thanks to NANOFRONT®’s expansive surface area created by its undulating nonwoven nanofiber, resulting in high absorbency, the pad surfaces offer excellent adherence to abrasive particles and abrasive fluids, allowing lower concentrations of abrasive fluids to be used.
·         NANOFRONT® is flexible enough to be used in polishing pads capable of producing silicon wafers with mirror finishes.
·     NANOFRONT®’s large surface area inhibits aggregation of abrasive particles in the fluids, contributing to enhanced polishing quality

Teijin frontier will begin selling its new polishing pads to manufacturers of semiconductors and flat-panel displays within the current fiscal year. It is targeting annual sales of one billion yen (9 million U.S. dollars) by the fiscal year ending in March 2026. Going forward, the company expects to expand its lineup of polishing pads in response to market needs by maximizing the synergies of NANOFRONT® polymer, polyurethane impregnation techniques and abrasive fluids.

Demands are growing for semiconductors that offer higher performance and lower prices. To produce such semiconductors, polishing pads of different hardness are required. Polishing pads are used variously to enable nanometer wiring on semiconductor surfaces, to create mirror finishes that help to prevent crystal silicone damage, and to maintain silicon wafer quality characteristics. Reducing the amount of abrasive fluids without losing quality is a major challenge, but necessary to help lower silicon wafer manufacturing costs because the fluids account for a large portion of the costs. Teijin Frontier succeeded in development of new silicon pads realizing both stable quality and reducing cost by adopting ultra-fine fiber NANOFRONT® utilizing its propriety yarn technology.

 

Source and Photo: www.teijin.com