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Handling and Positioning System for Product that Requires Dual Sided Processing, Top Surface Referencing and Minimum Contact

IP.com Disclosure Number: IPCOM000109489D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 5 page(s) / 217K

Publishing Venue

IBM

Related People

Grau, P: AUTHOR [+2]

Abstract

A handling and positioning system is disclosed that aids in processing unique glass ceramic semiconductor parts known as interposers, which must be accessed from both top and bottom and be top referenced for attaching and bonding devices. The system will minimize operator contact and avoid major tooling changes to current processing equipment.

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Handling and Positioning System for Product that Requires Dual Sided Processing, Top Surface Referencing and Minimum Contact

       A handling and positioning system is disclosed that aids
in processing unique glass ceramic semiconductor parts known as
interposers, which must be accessed from both top and bottom and be
top referenced for attaching and bonding devices.  The system will
minimize operator contact and avoid major tooling changes to current
processing equipment.

      A new process involving a mid-level component known as an
interposer is being introduced and does not conform well to
traditional approaches to handling.  The interposer, treated as a
substrate, requires the same accurate positioning and top referencing
as the large glass ceramic substrates for placement of chips onto its
top surface.  This process had to be performed on the same tooling,
with minimum changeover time, operator handling and unit cost.  The
interposer had to be accessed from the bottom for solder or solder
ball connections.  Finally, the interposer required a cleaning
process where the parts were traditionally removed from their
handling trays to special cleaning trays.

      A two-part, four-pocket carrier with dual-sided access shown in
Figs. 1 through 3 was developed to accommodate these requirements.
Each plate of the carrier is designed with corner locating pins on
each pocket to properly locate the product.  These pins are 90
degrees different between top a...