Patent ID: 6075285
Filing Date: 2000-06-13
Classification: H01L,H05K

Abstract:
An assembly comprising:an integrated circuit (411) having a plurality of electrical contact pads (405) through which power can be supplied thereto and by which it can be grounded;a package substrate (400) having a first surface with a plurality of electrical bond pads (424), each of which is electrically connected to a respective one of the electrical contact pads, and an opposing surface having a plurality of lands (426), each of which is for connecting to a respective land (438) of a printed circuit board (419), the package substrate including:at least first, second and third nonconductive layers (339);a first plurality of traces located in a first plane (330) between the first and second nonconductive layers and substantially parallel to one another, including a first power trace (240a) connected to one of the electrical bond pads to supply power to one of the electrical contact pads, a second power trace (240a) connected to one of the electrical bond pads to supply power to one of the electrical contact pads, a first ground trace (241a) connected to one of the electrical bond pads to ground one of the electrical contact pads, and a second ground trace (241a) connected to one of the electrical bond pads to ground one of the electrical contact pads; anda second plurality of traces located in a second plane (331), parallel to the first plane, between the second and third nonconductive layers and substantially parallel to one another, including a third power trace (240b) connected to the first power trace, a fourth power trace (240b) connected to the second power trace, a third ground trace (241b) connected to the first ground trace, and a fourth ground trace (241b) connected to the second ground trace, the third and fourth power traces and the third and fourth ground traces each being connected to a respective one of the lands on the package substrate wherein the first plurality of traces extend in a first direction and the second plurality of traces extend in a second direction transverse to the first direction.