Testable chip carrier
First Claim
1. A chip carrier comprising a rigid substrate, at least a first surface thereof being electrically insulating, the planar area of the substrate being divided into three portions:
- the first portion adapted for the siting of an integrated circuit chip, the chip having a plurality of bonding pads for electrical connections to the chip;
the second portion bounding said first portion and having a first plurality of conductive traces formed on said first surface thereof;
the third portion bounding said second portion and having a second plurality of conductive traces formed on a first surface thereof, the first conductive traces being electrically connected to corresponding traces of the second plurality of traces in the third portion;
the first conductive traces each terminating, at one end thereof, at inner bonding areas, and fanning out from the inner bonding areas to terminate, at the other end thereof, at outer bonding areas at the outer periphery of the second portion;
characterized bythe inner bonding areas being positioned on the substrate within the first portion or at the inner periphery of the second portion, at positions orthogonally projected outward from each bonding pad of the chip in the plane of the substrate thereby resulting in a substantially identical distance from each bonding pad of a chip sited in said first portion to a corresponding inner bonding area.
2 Assignments
0 Petitions
Accused Products
Abstract
An integrated circuit handling, packaging and testing apparatus in the form of a testable chip carrier comprising a rigid substrate onto which a chip may be bonded, and which provides a high density interconnect pattern orthogonally aligned to the chip bond pads for wire bonding thereto. The interconnect also provides external bonding points patterned for similar orthogonal alignment to the external device to which the chip is to be connected, and the dimensions of the carrier are substantially smaller than an equivalent standard or custom package type. A hermetic or non-hermetic seal lidding operation may be carried out on the chip and carrier. The carrier also provides a detachable test perimeter allowing full-functional testing and burn-in of the attached wire-bonded chip prior to placement on a printed circuit board or multi-chip module. Signal integrity is improved by the exact alignment of the carrier-to-chip and carrier-to-external device connections, and manufacturing techniques allow for the use of optimum interconnect materials, multi-layer structures and the addition of passive components external to the chip. The carriers may be integrated with heatsinks.
48 Citations
18 Claims
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1. A chip carrier comprising a rigid substrate, at least a first surface thereof being electrically insulating, the planar area of the substrate being divided into three portions:
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the first portion adapted for the siting of an integrated circuit chip, the chip having a plurality of bonding pads for electrical connections to the chip; the second portion bounding said first portion and having a first plurality of conductive traces formed on said first surface thereof; the third portion bounding said second portion and having a second plurality of conductive traces formed on a first surface thereof, the first conductive traces being electrically connected to corresponding traces of the second plurality of traces in the third portion; the first conductive traces each terminating, at one end thereof, at inner bonding areas, and fanning out from the inner bonding areas to terminate, at the other end thereof, at outer bonding areas at the outer periphery of the second portion; characterized by the inner bonding areas being positioned on the substrate within the first portion or at the inner periphery of the second portion, at positions orthogonally projected outward from each bonding pad of the chip in the plane of the substrate thereby resulting in a substantially identical distance from each bonding pad of a chip sited in said first portion to a corresponding inner bonding area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification