Substrate for an FBGA semiconductor component
View Patent ↗An FBGA semiconductor component has a chip side for receiving a semiconductor chip, a solder ball side for applying solder balls on ball pads, and a bonding channel embodied as an opening between the chip side and the solder ball side and serving for leading through wire bridges between the semiconductor chip and bonding islands on the solder ball side. The bonding channel has side areas extending between the chip side and the solder ball side and can be closed off with a housing part comprising potting composition. Positively locking elements for a potting composition are arranged in that region of the substrate in which the housing part is produced.
1. A semiconductor component comprising:
a substrate having a chip side, a solder ball side, and a bonding channel;
a semiconductor chip mounted on the chip side of the substrate;
a plurality of solder ball pads disposed on the solder ball side of the substrate;
a plurality of electrical connections extending through the bonding channel and electrically connected between the semiconductor chip and the solder ball pads; and
an encapsulation material covering the electrical connections within the bonding channel, wherein the encapsulation material extends within a surface of the substrate, and wherein the surface of the substrate includes at least one depression on the solder ball side adjacent the bonding channel, the encapsulation material extending within the depressions, wherein the at least one depression comprises at least one groove running around the bonding channel.
2. The semiconductor component according to claim 1 , wherein the grooves have a T-shaped or dovetailed cross section.
3. A semiconductor component comprising:
a substrate having a chip side, a solder ball side, and a bonding channel;
a semiconductor chip mounted on the chip side of the substrate;
a plurality of solder ball pads disposed on the solder ball side of the substrate;
a plurality of electrical connections extending through the bonding channel and electrically connected between the semiconductor chip and the solder ball pads; and
an encapsulation material covering the electrical connections within the bonding channel, wherein the encapsulation material extends within a surface of the substrate, and wherein encapsulation material extends within a surface of the substrate along edges of the bonding channel, wherein the edges of the bonding channel include a groove, the encapsulation material extends within the groove, and the groove is T-shaped or dovetailed in cross section.
4. The semiconductor component according to claim 3 , wherein the edges of the bonding channel include an undercut such that edges of the bonding channel form an angle of less than 90° with the solder ball side of the substrate.
5. The semiconductor component according to claim 3 , wherein the edges of the bonding channel are uneven.
6. The semiconductor component comprising:
a substrate having a chip side, a solder ball side, and a bonding channel;
a semiconductor chip mounted on the chip side of the substrate;
a plurality of solder ball pads disposed on the solder ball side of the substrate;
a web arranged between a first sidewall of the bonding channel and a second sidewall of the bonding channel, the web attached to the substrate at each sidewall;
a plurality of electrical connections extending through the bonding channel and electrically connected between the semiconductor chip and the solder ball pads; and
an encapsulation material covering the electrical connections within the bonding channel.
7. A semiconductor component according to claim 6 , wherein the web extends over the bonding channel on the solder ball side of the substrate.
8. The semiconductor component according to claim 6 , wherein the web extends from one side of the bonding channel to an opposite side of the bonding channel and is in each case connected to the sidewalls.
9. The semiconductor component according to claim 8 , wherein the web occupies the height of the bonding channel between the solder ball side and the chip side.
10. The semiconductor component according to claim 8 , wherein the web only partly occupies the height of the bonding channel between the solder ball side and the chip side and is arranged near to the chip side.
11. The semiconductor component according to claim 6 , wherein a plurality of webs are arranged over the bonding channel.
12. The semiconductor component according to claim 11 , wherein the plurality of webs are arranged parallel to one another.
13. The semiconductor component of claim 6 , wherein a surface of the substrate comprises at least one recess and the encapsulation material extends within the recess.
14. A substrate having a chip side for receiving a semiconductor chip, a solder ball side for applying solder balls on ball pads, and a bonding channel embodied as an opening between the chip side and the solder ball side and serving for leading through wire bridges between the semiconductor chip and bonding islands on the solder ball side, wherein said bonding channel has side areas extending between the chip side and the solder ball side and can be closed off with a housing part comprising potting composition, wherein the substrate includes at least one positively locking element for a potting composition that is arranged in that region of the substrate in which the housing part is produced, and wherein the at least one positively locking element comprises a web that extends across the bonding channel.
15. The semiconductor component according to claim 3 , wherein sidewalls of the edges of the bonding channel are uneven.
16. The semiconductor component according to claim 3 , wherein encapsulation material extends within a surface of sidewalls of the substrate along edges of the bonding channel.