Etched leadframe flipchip package system
View Patent ↗The present invention provides an etched leadframe flipchip package system comprising forming a leadframe comprises forming contact leads and etching a plurality of multiple dotted grooves on the contact leads, and attaching a flipchip integrated circuit having solder interconnects on the contact leads between each of the plurality of the multiple dotted grooves.
1. An etched leadframe packaging method comprising
forming a leadframe comprises:
forming contact leads, and
etching a plurality of multiple dotted grooves on the contact leads; and
attaching an integrated circuit having solder interconnects on the contact leads between each of the plurality of the multiple dotted grooves.
2. The method as claimed in claim 1 further comprising forming a die paddle having a geometric shape of the multiple dotted grooves on the die paddle.
3. The method as claimed in claim 1 further comprising forming a solder isolation barrier with the multiple dotted grooves.
4. The method as claimed in claim 1 further comprising attaching a passive component to the contact leads, wherein the passive component is bordered by the multiple dotted grooves.
5. The method as claimed in claim 1 further comprising forming a heat sink for serving as a half etched die paddle, wherein the die paddle is half etched allowing a path for a molding compound.
6. An etched leadframe packaging method comprising
forming a leadframe comprises:
half etching a die paddle,
half etching contact leads around the die paddle,
forming tie bars to the die paddle, and
etching a plurality of multiple dotted grooves on the contact leads and the die paddle;
attaching an integrated circuit having solder interconnects on the contact leads; and
encasing the leadframe and the integrated circuit.
7. The method as claimed in claim 6 further comprising forming multiple dotted grooves in a configuration on the die paddle for preventing seepage of the solder interconnects.
8. The method as claimed in claim 6 further comprising forming a solder isolation barrier with the plurality of the multiple dotted grooves to prevent the solder interconnects from collapsing.
9. The method as claimed in claim 6 further comprising attaching a passive component to the contact leads, wherein the passive component is bordered by the plurality of the multiple dotted grooves.
10. The method as claimed in claim 6 further comprising forming a thermal contact on the die paddle by etching of the top surface, where the etching forms a path for the molding compound.
11. An etched leadframe package system comprising:
a leadframe further comprises:
contact leads, and
a plurality of multiple dotted grooves etched on the contact leads; and
an integrated circuit having solder interconnects on the contact leads between the plurality of the multiple dotted grooves.
12. The system as claimed in claim 11 wherein the plurality of the multiple dotted grooves on the die paddle form a geometric shape.
13. The system as claimed in claim 11 further comprising a solder isolation barrier, wherein the solder isolation barrier comprises the plurality of the multiple dotted grooves on the die paddle.
14. The system as claimed in claim 11 further comprising a passive component attached to the contact leads, wherein the passive component is bordered by the plurality of the multiple dotted grooves.
15. The system as claimed in claim 11 further comprising a heat sink formed by etching the top surface of the die paddle, the heat sink comprising solder interconnects between the die paddle and the integrated circuit.
16. The system as claimed in claim 11 further comprising:
a die paddle and the contact leads half etched;
tie bars formed to the die paddle; and
a quad leadless package having the integrated circuit and the leadframe encased in a molding compound.
17. The system as claimed in claim 16 further comprising a geometric shape defined by each of the plurality of the multiple dotted grooves on the die paddle.
18. The system as claimed in claim 16 further comprising a solder isolation barrier, wherein the solder isolation barrier comprises the plurality of the multiple dotted grooves to prevent the solder interconnects from collapsing.
19. The system as claimed in claim 16 further comprising a passive component attached to the contact leads, wherein the passive component is bordered by the plurality of the multiple dotted grooves.
20. The system as claimed in claim 16 further comprising a heat sink formed by etching the top surface of the die paddle, wherein the heat sink comprises solder interconnects between the die paddle and the integrated circuit that allow a flow of molding compound.