Active trace rerouting
AssigneeLSI Logic Corporation
InventorsLeonard L. Mora, Abiola A. Awujoola, Jeffrey A. Hall
Life of this patent
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Abstract
A substrate of the type for receiving an integrated circuit and a mold cover. The mold cover covers a first portion of the substrate and leaves a second portion of the substrate exposed with a boundary edge between the first portion of the substrate and a second portion of the substrate. The substrate has electrically conductive traces and electrically conductive vias on an upper layer adjacent the mold cover. The electrically conductive traces do not cross the boundary edge on the upper layer of the substrate.
Claims12
In substrate of the type for receiving an integrated circuit and a mold cover that covers a first portion of the substrate and leaves a second portion of the substrate exposed with a boundary edge between the first portion of the substrate and a second portion of the substrate, the substrate having electrically conductive traces and electrically conductive vias on an upper layer adjacent the mold cover, the improvement comprising no electrically conductive traces that cross the boundary edge on the upper layer of the substrate.
A method of fabricating a packaged device, the method comprising the steps of:
- electrically mounting an integrated circuit to a substrate having a boundary edge, where the substrate has no electrically conductive traces that cross the boundary edge, and
- forming a mold cover on the substrate, where the mold cover has an edge at the boundary edge.
In a method of designing a substrate of the type for receiving an integrated circuit and a mold cover that covers a first portion of the substrate and leaves a second portion of the substrate exposed with a boundary edge between the first portion of the substrate and a second portion of the substrate the improvement comprising the step of laying out electrically conductive traces on an upper surface of the substrate such that the electrically conductive traces do not cross the boundary edge.
Dependencies are inferred from the claim text.