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Method for a geometrical linear-edge-expanded package form factor

IP.com Disclosure Number: IPCOM000074580D
Publication Date: 2005-Feb-23
Document File: 5 page(s) / 594K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a geometrical linear-edge-expanded package form factor. Benefits include improved functionality, improved performance, and improved design flexibility and improved panel utilization/cost reduction.

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Method for a geometrical linear-edge-expanded package form factor

Disclosed is a method for a geometrical linear-edge-expanded package form factor. Benefits include improved functionality, improved performance, and improved design flexibility and improved panel utilization/cost reduction.

Background

              Conventionally, rectangular packages are used exclusively. The parts on the panel cannot be interleaved. The virtual linear edge, which is the biggest block of additional input/output (I/O), cannot be lengthened. A longer linear edge enables more I/O to be processed.

              Package substrates are built in a panelized form. Multiple package substrates of the same design are built on a single panel in a single pass through manufacturing. An increased number of packages on a panel makes each package cheaper to produce.

              A conventional 34-mm square package provides 136 linear-mms for routing. The conventional package grid yields 16 packages on the X-axis and 16 on the Y-axis, netting 256 standard packages. (these numbers are based on a 20” panel size that I described, I would stick with the percentage of savings and articulate the expanded savings as examples, as until we actually build millions like this, targeted preliminarily for Broadwater, we wont know the exact per panel savings)

General description

              The disclosed method is a geometrical linear-edge expanded package form factor. The key elements of the disclosed method include:

•             Increased linear virtual edge of the package

•             Irregular package shapes

•             Increased number of packages per panel

•             Conceived geometrical configuration (CGC)

Advantages

              The disclosed method provides advantages, including:
•             Improved functionality due to adding more substrate packages per panel

•             Improved functionality due to adding usable length to the virtual linear edge without increasing the package size
•             Improved performance due to increasing the number of routes on a package

•             Improved design flexibility due to providing a variety of shapes rather than the conventional rectangle

•             Improved cost effectiveness due to producing more packages per panel

Detailed description

              The disclosed method is a geometrical linear-edge-expanded package form factor. Conceived geometrical configuration (CGC) determines the optimal shape for the package. As a result, the linear virtual edge of the package adds exploitable length without growing the package. CGC provides greater panel utilization, providing 15-18% more substrate packages per panel. As a pure mathematical example, on a 20” x 20” panel of 34-mm packages yields 16 packages on the X-axis and 19 on t...