Electronic package having a folded package substrate
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United States of America Patent
Stats
-
Jan 31, 2006
Grant Date -
Jan 20, 2005
app pub date -
Jul 17, 2003
filing date -
Jul 17, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electronic package of the kind having a folded substrate is provided. The substrate is configured so that a stress concentration is created where folding is desired. In the present example, the stress concentration is created with first a resilient metal ground layer that resists bending and has an edge that promotes the creation of a stress concentration in a flexible layer at or near the edge. A second metal ground layer resists bending in another portion of the substrate, and also has an edge creating a stress concentration in a different area of the flexible layer. The portions of the substrate having the first and second resilient metal ground layers can be folded over one another with substantially no bending in these portions, while a fold portion between the edges bends to allow for folding of the substrate.
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