Integrated circuit package and device

An integrated circuit package including: a substrate having front connection pads on a front face, an integrated circuit die linked to the front face of the substrate and having front connection pads, connection wires for connecting selected front pads of the integrated circuit die to selected front pads of the substrate, first connection balls on selected front connection pads of the integrated circuit die, and second connection balls on selected front connection pads of the substrate. An integrated circuit device including a second substrate connected to the connection balls of the integrated circuit package.

BACKGROUND

1. Technical Field

The present disclosure relates to the field of integrated circuit devices or packages.

2. Description of the Related Art

Currently, on one hand, integrated circuit packages comprise a substrate, an integrated circuit die, bonding wires for connecting the die and the substrate and an block encapsulating the die and the wires, and, on the other hand, other integrated circuit packages comprise a substrate, an integrated circuit die, connection balls between the die and the substrate and an block encapsulating the die and the connection balls. In the both cases, the packages are connected to other substrates by connection balls on the faces of the substrates opposed to the integrated circuit dies.

BRIEF SUMMARY

It is proposed an integrated circuit package which can include a substrate having front connection pads on a front face, an integrated circuit die linked to the front face of the substrate and having front connection pads, connection wires for connecting selected front pads of the integrated circuit die to selected front pads of the substrate, first local connection means on selected front connection pads of the integrated circuit die, and second local connection means on selected front connection pads of the substrate.

The first local connection means and the second local connection means can be sized to be connected on connecting pads of another substrate.

The substrate can include a connection network connecting selectively the front pads thereof.

It is proposed an integrated circuit device, which can include a first substrate, an integrated circuit die linked to the first substrate, connection wires for connecting the die to the first substrate, a second substrate, first local connection means between the integrated circuit die and the second substrate, and second local connection means between the first substrate and the second substrate.

The integrated circuit die can include central connection pads connected to the first connection balls and peripheral connection pads connected to the connection wires.

The first substrate can include first connection pads around the periphery of the integrated circuit die and connected to the connection wires and second connection pads around the periphery of the first connection pads and connected to the second local connection means.

The second substrate can be a printed circuit board.

An integrated circuit device can further include a third substrate and third local connection means between the second substrate and the third substrate.

The third substrate can be a printed circuit board.

The first substrate can comprise connection pads on a face opposed to the integrated circuit die.

DETAILED DESCRIPTION

Referring toFIG. 1, an integrated circuit device1as shown includes an integrated circuit package2.

This integrated circuit package2comprises a first substrate3having a front face4and an integrated circuit die5linked to a central part of the front face4for example by the intermediate of a glue. The front face6of the die is substantially parallel to the front face4of the first substrate3. The front face6of the die is provided with connection pads which include a group of central connection pads7, as flip-chip bumps, and a group of peripheral connection pads8, as bonding pads.

The front face4of the substrate3is provided with a first group of inner connection pads9placed around and at a distance from the periphery of the die5and a second group of outer connection pads10placed around the first group of connection pads9. The first substrate includes a connection network11adapted to connect selectively the connection pads9and the connection pads10

The integrated circuit package2comprises further a group of connection bonding wires12connecting selectively the peripheral connection pads8of the integrated circuit die5to the inner connection pads9of the first substrate2, a first group of central local connection means such as connection balls13on the central connection pads7of the integrated circuit die5and a second group of peripheral local connection means such as connection balls14on the outer connection pads10of the substrate2. the local connection means would be also in form of copper pillars or gold bond wires.

The integrated circuit device1includes further a second substrate15having a face16providing with connection pads17placed respectively to receive and to be connected to the connection balls13and the connection balls14. The second substrate15can include a connection network connected to the connection pads17to be connected to other electronic circuits.

For example, the face16of the second substrate15is substantially parallel to the front face4of the first substrate3and the connection pads17can be in a same plane. Consequently, the diameter of the balls14is approximately equal to the thickness of the die plus the diameter of the balls13, so that, before assembling, the parts of the balls13and of the balls14, opposed to the front face4of the first substrate3, are in a same plane.

The bonding wires12are adapted in order that they are not in contact with the second substrate15.

For example, the second substrate15can be a printed circuit board carrying other components connected to the connection pads17thereof.

In consequence of the above structure, the integrated circuit die5can be connected to the connection pads17of the second substrate15on one hand directly by the intermediate of the connection balls13and on the other hand by the intermediate of the wires12, the connection network11of the first substrate3and the connection balls14. So, it is possible to choice selectively the using of these connections.

Referring toFIG. 2, another integrated circuit device18as shown includes also an integrated circuit package2and includes a second substrate19having a face20provided with connection pads21connected to the connection balls13and14as above-described.

A face22of the second substrate19, opposed to the face20thereof, is provided with connection pads23.

The second substrate19includes an integrated connection network24for connecting respectively the connection pads21of the face20and the connection pads23of the face22.

The integrated circuit device18comprises further a third substrate25having a face26provided with connection pads27and local connection means such as connection balls28placed between the connection pads23of the second substrate19and the connection pads27of the third substrate25.

As above-described concerning the second substrate15, the third substrate24can be a printed circuit board.

In the example ofFIG. 1, on one hand, as the central connection balls13are smaller than the peripheral connection balls14, the pitch of the central connection balls13, which can be fine, is smaller than the pitch of the peripheral connection balls14and, on the other hand, due to the existence of the necessary place for the wires12, the central connection balls13and the peripheral connection balls14are spaced apart. In consequence, the disposition of the connection pads17of the second substrate15, which can be a printed circuit board, is in correspondence of this disposition of the connection balls13and14.

In the example ofFIG. 2, the existence of the second substrate19between the integrated circuit package2and the third substrate25, which can be a printed circuit board, can permit to transform the irregular disposition of the connection balls13and14into a regular disposition of the connection balls27, according to a regular pitch adapted to such a printed circuit board.

As shown particularly onFIG. 1, the rear face28of the first substrate3, opposed to the front face4thereof, can be provided of connection pads29connected to the network11. This disposition can permit to equip the devices with other components linked on the rear face28of the first substrate3. Furthermore, the rear face28of the first substrate can be used for thermal dissipation.

Although embodiments of the devices and systems of the present disclosure have been illustrated in the accompanying drawings and described in the foregoing detailed description, it will be understood that the disclosure is not limited to the embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the spirit of the disclosure.