Copper feature design for warpage control of substrates
Abstract:
An approach is provided in which a laminate substrate includes top layers, bottom layers, and a core layer. The top layers are positioned between the core layer and a top surface metallurgy (TSM) layer and include at least one top conductive layer. The bottom layers are positioned between the core layer and a bottom surface metallurgy (BSM) layer and include at least one bottom conductive layer includes a material void pattern that is based upon the top conductive layer and reduces warpage of the laminate substrate.
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