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Internal defects such as delaminations, cracks and voids within ceramic chip capacitors can lead to product failure.

Sonoscan Granted Patent On Virtual Rescanning Acoustic Microscope

Elk Grove Village, IL — April 12, 2006

Sonoscan, Inc., the designer and maker of acoustic microscope systems, has been granted US Patent #6,895,820 covering the firm’s Virtual Rescanning Module™ (VRM™).

The VRM technique permits engineers to acquire and save all of the acoustic echo data from the entire volume of a part such as an integrated circuit (IC) package. The saved digital file can later be rescanned to make acoustic images as though the file were the physical IC package.

Because VRM lets engineers “have their cake and eat it too,” it is widely used to preserve data about parts before they go into production or into testing. After a part has been altered by heat, testing, or other factors, it is no longer “too late” to examine the part in its original condition.

Specific VRM techniques have already evolved in key production areas. In advanced flip chip production, for example, VRM is used along with the patented Sonoscan method for Frequency Domain Imaging (FDI) to perform very high resolution non-destructive analysis of critical flip chip interfaces.

VRM images are made from data files and, like this image of a PQFP with a popcorn crack, are indistinguishable from  acoustic images made from the physical sample.

Sonoscan, Inc. 2149 E. Pratt Blvd., Elk Grove Village, IL 60007. Phone 847-437-6400. Contact Bill Zuckerman x237. Email; web

About Sonoscan®: Sonoscan is the leading developer and manufacturer of acoustic microscopes and sophisticated acoustic micro imaging systems, widely used for nondestructive analysis of defects in industrial products and semiconductor devices. For over 30 years, Sonoscan’s attention to customer needs and investment in R&D has created systems that set industry standards for speed and accuracy. Key products include C-SAM® systems for off-line and laboratory analysis and FACTS2™ for automated production inspection.

Through its SonoLab division Sonoscan applications engineers, with experience totaling more than two centuries in acoustic microscopy, assist hundreds of customers annually in solving materials problems and quality control issues. SonoLab operates applications testing laboratories in multiple global locations to serve the inspection needs of customers that do not have their own capability.