A method for performing failure analysis on a semiconductor device under
inspection includes preparing of a device sample using an encapsulation
material containing a dye, the prepared device sample possibly including
a failure area having wicked in encapsulation material containing the
dye. The prepared device sample is then sectioned to facilitate viewing a
cross section face of the device under inspection. Lastly, a dark field
analysis on the prepared device sample is performed with the use of dark
field illumination. Responsive to at least one failure area containing
wicked in encapsulation material with dye occurring on the cross section
face of the device under inspection, the failure area can be readily
identified as well as a contrast and perspective of remaining portions of
the cross section face being maintained.