Patent ID: 7309914

Claim:
A high density circuit module comprising: two or more CSPs arranged one above the other to form a stack, the stack having a selected bottom CSP, each of the two or more CSPs having a first major surface and a second major surface and a plurality of CSP contacts arranged along the first major surface; a form standard associated with the selected bottom CSP, the form standard comprising at least a selected lower portion disposed along the second major surface of the selected bottom CSP; one or more flexible circuits interconnecting the two or more CSPs, the one or more flexible circuits having a selected lower flexible circuit for connecting the module to an operating environment, a first portion of the selected lower flexible circuit being disposed along the selected lower portion of the form standard; a plurality of module contacts attached to the first portion of the selected lower flexible circuit; the selected bottom CSP being in an inverted disposition such that its second major surface is disposed lower than its first major surface.