USE OF C-MODE SCANNING ACOUSTICAL MICROSCOPY IN IMAGING INTERNAL LAYERS IN PRINTED CIRCUIT BOARDS
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2002-Feb-22
The shrinking size ofconsumer electronic prod- ucts coupled with the need for increasing features on these products places serious processing require- ments on the manufacture of printed circuit boards (PCB). As lines, vias and ground plates are pushed closer together incidences of shorting become increas- ingly likely and are sometime only discovered once costly surface mount operations have been com- pleted. Properly developed, acoustical imaging offers the ability to screen PCB's for fatal internal defects prior to surface mounting components.