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An Integrated Heat Spreader with a Notch to Integrate the Topside Electrical Pads to the Top of a Package

IP.com Disclosure Number: IPCOM000130525D
Publication Date: 2005-Oct-25
Document File: 2 page(s) / 68K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for an integrated heat spreader (IHS) with notches in one or more of its sides to increase the real estate on the topside of the package. Benefits include a solution that enables a much smaller package to be able to place discrete components.

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An Integrated Heat Spreader with a Notch to Integrate the Topside Electrical Pads to the Top of a Package

Disclosed is a method for an integrated heat spreader (IHS) with notches in one or more of its sides to increase the real estate on the topside of the package. Benefits include a solution that enables a much smaller package to be able to place discrete components.

Background

Currently, it is difficult to access the debug equipment test pads for bus validation, or place discrete components and additional die without growing the package size (see Figure 1). For debug equipment test ports, this problem is addressed by increasing the package size by at least 2.5mm. For other components or die, this problem is addressed by increasing the package size by what is needed to satisfy the keep-out zone requirements.

General Description

The disclosed method creates an IHS with notches cut out of one or more sides to enable additional real estate on the topside of the package. This enables the addition of multiple-rows of debug equipment test pads, discrete components, or other die. The disclosed method accomplishes this without impacting the IHS-to-substrate bond strength or the die-side capacitor placement. Figure 2 show an implementation of the disclosed method.

Advantages

The following are advantages of the disclosed method:

ยง         For debug equipment test ports, it allows the use of a smaller package (~2.5mm smaller) to accommodate the debug equipment test pads, and also enables the...