Large die package structures and fabrication method therefor
View Patent ↗A method for fabricating large die package structures is provided wherein at least portions of the leadtips of at least a plurality of leadfingers of a leadframe are electrically insulated. A die is positioned on the electrically insulated leadtips. The die is electrically connected to at least a plurality of the leadfingers.
1. A method for fabricating large die package structures, comprising:
electrically insulating at least portions of the leadtips of at least a plurality of leadfingers of a leadframe;
positioning a die on the electrically insulated leadtips;
electrically connecting the die to at least a plurality of the leadfingers;
encapsulating at least a portion of the leadframe and die in a mold compound; and
wherein positioning the die further comprises attaching the die to a die paddle on the leadframe.
2. The method of claim 1 wherein electrically insulating further comprises insulating with a non-conductive material located between the leadtips and the die.
3. The method of claim 1 further comprising forming notches in the leadtips for receiving the die therein.
4. A method for fabricating large die package structures, comprising:
electrically insulating at least portions of the leadtips of at least a plurality of leadfingers of a leadframe;
positioning a die on the electrically insulated leadtips;
electrically connecting the die to at least a plurality of the leadfingers;
encapsulating at least a portion of the leadframe and die in a mold compound; and
wherein positioning the die further comprises supporting the die on a flip chip that is located on the leadframe and electrically connected thereto.
5. A method for fabricating large die package structures, comprising:
electrically insulating the leadtips of leadfingers of a leadframe;
positioning a die on the electrically insulated leadtips;
wire bonding the die to the leadfingers to electrically connect the die thereto;
encapsulating at least a portion of the leadframe and die in a mold compound; and
wherein positioning the die further comprises attaching the die to a die paddle on the leadframe with a conductive adhesive.
6. The method of claim 5 wherein electrically insulating further comprises insulating with a non-conductive film located between the leadtips and the die.
7. The method of claim 5 further comprising etching notches in the leadtips for receiving the die therein.
8. A method for fabricating large die package structures, comprising:
electrically insulating the leadtips of leadfingers of a leadframe;
positioning a die on the electrically insulated leadtips;
wire bonding the die to the leadfingers to electrically connect the die thereto;
encapsulating at least a portion of the leadframe and die in a mold compound; and
wherein positioning the die further comprises supporting the die on a flip chip that is located on the leadframe and electrically connected thereto.
9. A large die package structure, comprising:
a leadframe having leadfingers and a die paddle;
leadtips on the leadfingers;
at least portions of the leadtips of at least a plurality of the leadfingers being electrically insulated;
a die positioned on the electrically insulated leadtips and attached to the die paddle on the leadframe;
the die being electrically connected to at least a plurality of the leadfingers; and
a mold compound encapsulating at least a portion of the leadframe and the die.
10. The structure of claim 9 wherein the leadfingers are electrically insulated with a non-conductive material located between the leadtips and the die.
11. The structure of claim 9 further comprising notches in the leadtips for receiving the die therein.
12. A large die package structure, comprising:
a leadframe having leadfingers;
leadtips on the leadfingers;
at least portions of the leadtips of at least a plurality of the leadfingers being electrically insulated;
a flip chip that is located on the leadframe and electrically connected thereto;
a die positioned on the electrically insulated leadtips and supported on the flip chip;
the die being electrically connected to at least a plurality of the leadfingers; and
a mold compound encapsulating at least a portion of the leadframe and the die.
13. A large die package structure, comprising:
a leadframe having leadfingers and a die paddle;
leadtips on the leadfingers;
the leadtips of the leadfingers being electrically insulated;
a die positioned on the electrically insulated leadtips and attached to the die paddle on the leadframe;
wirebonds electrically connecting the die to the leadfingers; and
a mold compound encapsulating at least a portion of the leadframe and the die.
14. The structure of claim 13 wherein the leadfingers are electrically insulated with a non-conductive material located between the leadtips and the die.
15. The structure of claim 13 further comprising notches in the leadtips for receiving the die therein.
16. A large die package structure, comprising:
a leadframe having leadfingers;
leadtips on the leadfingers;
the leadtips of the leadfingers being electrically insulated;
a flip chip that is located on the leadframe and electrically connected thereto;
a die positioned on the electrically insulated leadtips and supported on the flip chip;
wirebonds electrically connecting the die to the leadfingers; and
a mold compound encapsulating at least a portion of the leadframe and the die.