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Browse Prior Art Database

Replaceable Thermode Vacuum Seal for TAB Component Pickup

IP.com Disclosure Number: IPCOM000102210D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Anstrom, JR: AUTHOR [+3]

Abstract

This article describes and identifies the key features of a replaceable thermode vacuum seal that solves the problem of (1) sensitivity to part surface roughness and (2) adaptability to different chip sizes and vacuum channel designs.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 85% of the total text.

Replaceable Thermode Vacuum Seal for TAB Component Pickup

       This article describes and identifies the key features of
a replaceable thermode vacuum seal that solves the problem of (1)
sensitivity to part surface roughness and (2) adaptability to
different chip sizes and vacuum channel designs.

      A TAB component, after excise and form, is picked up using a
vacuum channel machined into the metal bottom of a thermode.  This
metal interface is noncompliant and therefore requires a smooth part
surface in order to be effective.

      Figure 1 shows a replaceable thermode vacuum seal which lessens
part surface smoothness requirement as well as makes the thermode
easily adaptable to different chip dimensions. The vacuum seal
includes two high-temperature silicone rubber sections molded onto an
aluminum plate.  The vacuum channel separates the two sections, with
the inner section incorporating the chip cavity and four
through-holes for fastening onto the thermode.  There are also four
vacuum pots in the vacuum channel that align with the vacuum ports in
the thermode.  Figure 2 shows how the vacuum seal is screwed into the
bottom of the thermode.

      This replaceable thermode vacuum seal provides a compliant
surface that will conform to the part surface, resulting in better
thermode performance and reliability during pickup.  Component
manufacturing costs are lowered due to less stringent surface
roughness and flatness requirements placed on the pa...