Chip-scale package
View Patent ↗A semiconductor package including a conductive clip preferably in the shape of a can, a semiconductor die, and a conductive stack interposed between the die and the interior of the can which includes a conductive platform and a conductive adhesive body.
1. A semiconductor package, comprising:
a die comprising a first electrode disposed on a first surface thereof and a second electrode disposed on an opposite surface thereof;
a conductive clip having a web portion and an interior deeper than a thickness of said die;
a conductive stack attaching said first electrode to said web portion, said conductive stack comprising a conductive adhesive and a conductive platform, and said second electrode not disposed within said interior;
wherein said conductive platform provides a standoff for said die such that said second electrode protrudes from said conductive clip.
2. The semiconductor package of claim 1 , wherein said conductive clip further comprises a wall surrounding said web portion, and a rail extending from said wall.
3. The semiconductor package of claim 1 , wherein said conductive platform is formed on said web portion, and said conductive adhesive is formed on said first electrode.
4. The semiconductor package of claim 1 , wherein said conductive platform is formed on said first electrode, and said conductive adhesive is interposed between said conductive platform and said web portion.
5. The semiconductor package of claim 1 , wherein said conductive platform is formed with a paste compound.
6. The semiconductor package of claim 5 , wherein a shape of said paste compound does not substantially change when said conductive platform is heated.
7. The semiconductor device of claim 5 , wherein said paste compound comprises a mixture of binder particles and filler particles.
8. The semiconductor package of claim 7 , wherein said binder particles comprise solder powder, and said filler particles comprise conductive particles.
9. The semiconductor package of claim 7 , wherein said filler particles constitute 5-40% by weight of said paste compound, and said binder particles constitute 50-85% by weight of said paste compound.
10. The semiconductor package of claim 7 , wherein said filler particles are between 15-65 μm and said binder particles are between 25-45 μm.
11. The semiconductor package of claim 7 , wherein said filler particles comprise a core material coated with another material.
12. The semiconductor package of claim 7 , wherein said binder particles comprise at least 95% Sn by weight.
13. The semiconductor package of claim 7 , wherein said binder particles form a solder matrix that glues said filler particles to one another.
14. A semiconductor package, comprising:
a die comprising a drain electrode disposed on a first surface thereof and a source electrode disposed on an opposite surface thereof;
a conductive clip having a web portion and an interior deeper than a thickness of said die, said conductive clip comprising a wall surrounding said web portion, and a rail extending from said wall; and
a conductive stack attaching said drain electrode to said web portion, said conductive stack comprising a conductive adhesive and a conductive platform, said source electrode not disposed within said interior;
wherein said conductive platform provides a standoff for said die such that said source electrode protrudes from said conductive clip.
15. The semiconductor package of claim 14 , wherein said conductive clip is can-shaped.
16. The semiconductor package of claim 14 , wherein said conductive clip is comprised of copper.
17. The semiconductor package of claim 14 , wherein said conductive platform is formed on said web portion, and said conductive adhesive is formed on said drain electrode.
18. The semiconductor package of claim 14 , wherein said conductive platform is formed on said drain electrode, and said conductive adhesive is interposed between said conductive platform and said web portion.
19. The semiconductor package of claim 14 , wherein said conductive platform is comprised of conductive particles glued to one another by a solder matrix.