While flexible circuits continue their forward march, over the past decade, there has been increased interest and use of stretchable circuits for a variety of new applications where circuits have the ability to deform and/or elongate elastically and return to their original size. This upstart variation of the venerable flexible circuit has been given the title of "stretchable circuit," and it appears that they are going to be an increasingly important subset of future flexible circuit designs.
Ultraviolet (UV) bump, also called UV cure, is a processing step in which the solder mask pattern is irradiated with ultraviolet and infrared light. This step is performed with special equipment that is built as a continuous flow system, which consists of a conveyor belt and tubular UV lamps mounted above and below the belt. Read on to find out more about this process.
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Many vendors and manufacturers featured test equipment for flexible circuits. It was worthwhile for me to take a long look at this equipment that evaluates new functional, flexible circuits. The first piece of equipment I examined was...
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