The packages were assembled with known-good die
, which were bonded with 2.
He said he sees more interest in applying ATPG compression patterns at wafer-sort test to ensure known-good die
(KGD) where comprehensive compression patterns can be applied without extensive I/O access at the wafer-probe level.
The availability of known-good die
(KGD) at an acceptable price was an issue for other applications.
In addition, contracts have been awarded to Lockheed Martin, Syracuse, NY, for a known-good die
intelligent test station; M/A COM for work on the independent merchant foundry source for low cost MCAs for DoD applications, Northrop Grumman for work on adaptable MMICs; the Raytheon/Texas Instruments joint venture for work on technologies for wideband integrated apertures and ground-based AESAs; Texas Instruments for work on enhancement of a source for MMICs and MCAs; TRW Inc.
The major difference is that today's inteposers have TSVs, but some issues, such as ensuring a high-yield process is used to produce the substrate, mounting known-good die
, thermal issues, and infrastructure, have not changed.
Typically, memory will come from a third-party memory supplier, arriving as a known-good die
and delivered with a test program that validates the die as good.