Method of making a compliant multichip package

  • US 6,054,337 A
  • Filed: 12/12/1997
  • Issued: 04/25/2000
  • Est. Priority Date: 12/13/1996
  • Status: Expired due to Term
First Claim
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1. A method of making a multichip package comprising the steps of:

  • (a) providing a substrate having a plurality of conductive traces and flexible leads connected to outer ends of at least some of said conductive traces adjacent the periphery of said substrate, said substrate including conductive terminals accessible at a surface thereof connected to at least some of said conductive traces;

    (b) providing a first microelectronic element having a front face including contacts and a back surface and assembling the front face thereof with said substrate;

    (c) providing a second microelectronic element having a front face including contacts and assembling the second microelectronic element with the first microelectronic element and the substrate so that said second microelectronic element overlies said first microelectronic element;

    (d) providing a compliant element between the second microelectronic element and the substrate; and

    (e) electrically interconnecting said first and second microelectronic elements with one another and with said conductive terminals by connecting said flexible leads to the contacts of said second microelectronic element and connecting at least some of said traces to the contacts of said first microelectronic element.

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