Deprocessing
IAL uses mechanical, chemical, and dry deprocessing
methods to obtain the results you desire.
Decapsulation
Decapsulation is a technique for exposing the internal
components of a package device. Acids, solvents, or
mechanical devices are generally used to ÒopenÓ devices,
exposing the semiconductor device while keeping its
connections to the package intact.
In plastic packages, the epoxy encapsulant must be
removed to expose the die for failure analysis. This
must be done without altering the electrical functionality
of the device.
Semiconductor devices are very fragile and must be
packaged to be mounted on printed circuit boards. Depending
on the nature of the device, the package can be very
simple or very complex. The package facilitates electrical
access to the device, gets rid of the heat generated
during operation and protects the fragile semiconductor
chip from the environment: humidity, chemical contamination
and mechanical stresses.
Plasma Etching
Plasma enhanced parallel plate RIE (reactive ion etcher)
system is capable of removing dielectric films and
some metals used in integrated circuit fabrication.
After removing the passivation layers, some devices
can be micro probed for device characterization and
failure analysis.
|