Patent ID: 7145248

Claim:
A flip-chip assembly in which a top chip and a bottom chip are connected, at least said top chip having integral thereto, in that it is made up of, at least a top layer, a bottom layer, and an insulating layer, said insulating layer (i) extending within said top chip between said top layer of said chip abd said bottom layer of said chip so as to electrically isolate said top layer of said top chip from said bottom layer of said top chip, (ii) is not said top layer of said top chip nor said bottom layer of said top chip, and (iii) is located between said top layer of said top chip and said bottom layer of said top chip, said flip-chip assembly comprising: a flexible structure which is formed as an integral part of said top chip and is electrically coupled to said bottom layer of said top chip; and a wire bond which pins at least a conductive portion of said flexible structure to a top layer of said bottom chip, said top layer of said bottom chip facing said bottom layer of said top chip when said flip-chip is assembled.