Patent ID: 7098071
Filing Date: 2006-08-29
Classification: H01L,H05K

Abstract:
1. A method for flip chip bonding by utilizing an interposer with embedded bumps, comprising: (a) providing a first element having a first surface; (b) forming an interposer onto the first surface; (c) forming a plurality of openings having depths on the interposer; (d) forming a plurality of bumps in the openings, wherein the heights of the bumps are smaller than the depths of the openings; (e) providing a second element having a plurality of pre-solders; and (f) bonding the first element and the second element, so that the pre-solders are disposed in the openings and in contact with the bumps, wherein the heights of the pre-solders are equal to or larger than the difference between the depths of the openings and the heights of the bumps.