The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2001
Filed:
Feb. 04, 1999
Young Kim, Cupertino, CA (US);
Belgacem Haba, Cupertino, CA (US);
Vernon Solberg, Saratoga, CA (US);
Tessera, Inc., San Jose, CA (US);
Abstract
A stacked microelectronic assembly and its resulting structure includes a flexible substrate having a plurality of attachment sites, test contacts and conductive terminals, and including a wiring layer with leads extending to the attachment sites. The assembly includes a plurality of microelectronic elements assembled to the attachment sites and electrically interconnecting the microelectronic elements and the leads. The flexible substrate is folded so as to stack at least some of the microelectronic elements in substantially vertical alignment with one another to provide a stacked assembly with the conductive terminals exposed at the bottom end of the stack and the test contacts exposed at the top end of the stack. The assembly may be made using a dam and or a spacer to facilitate the folding process. Two stacked microelectronic assemblies may be stacked together by providing a first stacked assembly with a plurality of connection pads exposed at the top end and providing a second stacked assembly with a plurality of solder balls connected to the terminals at the bottom end. The first and second assemblies may be stacked by connecting the solder balls to the connection pads.