Patent ID: 9390060
Filing Date: 2016-07-12
CPC Classification: G06F,H01L

Claim Text:
1. A method of packaging semiconductor devices, the method comprising: coupling a second die to a top surface of a first die; dispensing a first amount of underfill material between the first die and the second die, the first die and the second die being at a location on a support in a dispensing system during the dispensing the first amount; capturing an image of the underfill material in-situ at the location on the support in the dispensing system after the first amount of underfill material has been dispensed and during a break in the dispensing of the underfill material; determining a fillet width using the image; establishing a plurality of threshold levels for the fillet width measured; determining a second amount of underfill material to dispense for each of the plurality of threshold levels; analyzing the image captured of the underfill material to determine an amount of fillet width measured; determining which of the plurality of threshold levels the amount of fillet width measured has attained; and based on the image, dispensing the second amount of underfill material for the threshold level the fillet width measured has attained between the first die and the second die.