Bonded wire semiconductor device
View Patent ↗A bonded wire semiconductor device includes a sub-assembly including a semiconductor die having an active face with a set of internal electrical contact elements and an externally exposed set of electrical contact elements. A set of bond wires make respective electrical connections between the internal electrical contact elements and the externally exposed set of electrical contact elements. A molding compound encapsulates the semiconductor die with the active face embedded in the molding compound. The bond wires have the same length. The bond wires are bonded to the internal electrical contact elements and to the externally exposed electrical contact elements at first and second curved arrays and of bond positions respectively. The first and second curved arrays and of bond positions have corresponding concentric shapes.
1. A bonded wire semiconductor device, comprising:
a semiconductor die having an active face with a set of internal electrical contact elements;
a set of externally exposed electrical contact elements;
a set of bond wires making respective electrical connections between said internal electrical contact elements and said externally exposed electrical contact elements, wherein said bond wires are of substantially the same length; and
a molding compound encapsulating said semiconductor die with said active face embedded in said molding compound,
wherein said bond wires are bonded to said internal electrical contact elements and to said externally exposed electrical contact elements at first and second curved arrays of bond positions respectively and said first and second curved arrays of bond positions have corresponding concentric shapes.
2. The semiconductor device of claim 1 , wherein said second curved array of bond positions has a greater size than said first curved array of bond positions.
3. The semiconductor device of claim 1 , wherein said bond wires are bonded to said externally exposed electrical contact elements adjacent inner ends of said externally exposed electrical contact elements, which terminate on a curve of similar shape to said second curved array of bond positions.
4. The semiconductor device of claim 3 , wherein said semiconductor die is substantially square and said first and second curved arrays of bond positions are generally circular curves.
5. The semiconductor device of claim 4 , wherein said first and second curved arrays of bond positions are generally elliptical curves.
6. The semiconductor device of claim 1 , wherein said first and second curved arrays of bond positions have similar concentric shapes.
7. The semiconductor device of claim 1 , wherein said semiconductor die is oblong and said first and second curved arrays of bond positions are generally oval curves.
8. The semiconductor device of claim 1 , wherein differences in length between said bond wires are less than 10%.
9. The semiconductor device of claim 1 , wherein differences in length between said bond wires are less than 5%.
10. The semiconductor device of claim 1 , wherein said bond wires extend perpendicularly to said active face in loops that have substantially the same length and height.
11. The semiconductor device of claim 10 , wherein differences in length and height between said loops in said bond wires are less than 10%.
12. The semiconductor device of claim 10 , wherein differences in length and height between said loops in said bond wires are less than 5%.