Integrated circuit underfill package system
View Patent ↗An integrated circuit underfill package system including providing a substrate having a dispense port, attaching a first integrated circuit die on the substrate, and supplying an underfill to the dispense port when the substrate and the first integrated circuit die are inverted.
1. An integrated circuit underfill package system comprising:
a substrate having a dispense port;
a first integrated circuit die on the substrate;
an underfill to the dispense port and between the substrate and the first integrated circuit die, the underfill covers portions of a side of the first integrated circuit die and leaves a surface of the first integrated circuit die uncovered; and
a second integrated circuit die over the first integrated circuit die, and the underfill does not fill a space directly under the second integrated circuit die and the first integrated circuit die.
2. The system as claimed in claim 1 further comprising:
the second integrated circuit die over the first integrated circuit die; and
the underfill fills a space between the second integrated circuit die and the substrate.
3. The system as claimed in claim 1 wherein the underfill comprises an overflow of the underfill on a sidewall of the first integrated circuit die.
4. The system as claimed in claim 1 wherein the substrate has electrical connections encapsulated by the underfill
5. The system as claimed in claim 1 wherein:
the substrate has first electrical connections and second electrical connections;
the first integrated circuit die has first electrical connectors connected to the first electrical connections positioned around the dispense port; and
the underfill is cured between the substrate and the first integrated circuit die.
6. The system as claimed in claim 5 wherein the substrate comprises:
a mounting surface with the first electrical connections and the second electrical connections; and
an interconnect surface for electrical interconnects.
7. The system as claimed in claim 5 wherein:
the first integrated circuit die comprises a flipchip having solder bumps attached to the first electrical connections.
8. The system as claimed in claim 5 wherein:
the underfill fills a predetermined space between the overflow and second electrical connections and is on a sidewall of the first integrated circuit die.
9. The system as claimed in claim 5 wherein:
the underfill is cured between the first integrated circuit die and the second electrical connections and on a sidewall of the first integrated circuit die.