Browse Prior Art Database

Substrate Circuitizing Fixture

IP.com Disclosure Number: IPCOM000072893D
Original Publication Date: 1970-Oct-01
Included in the Prior Art Database: 2005-Feb-22
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Funari, J: AUTHOR [+3]

Abstract

This workholder provides positive positioning of a plurality of substrates that require multiple processing steps.

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Substrate Circuitizing Fixture

This workholder provides positive positioning of a plurality of substrates that require multiple processing steps.

Holder 1, of any suitable material that is unaffected by processing solutions, is provided with a plurality of cut-outs 2 that are slightly larger than the substrates. Plastic film 3 attached to the holder includes flaps 4 that extend over the edges of the cut-outs. Slot 5 and holes 6 provide locating surfaces for the holder.

The substrates 7 are positioned on the film and pushed into the cut-outs where the turned down plastic flaps hold the substrate in position for semipermanent attachment to the holder. The assembly is heated which reflows the plastic film to form a bond between the substrates and holder. The substrates are removed from the holder after processing by dissolving the plastic with a suitable solvent.

Alternate methods of securing the substrates in the holder are shown at B and C. At B, a plastic frame 8 is positioned between the substrate and the holder to provide a fastening means that is heated to fuse the assembly. At C, the tolerance between substrate and holder is reduced and semicircular openings 9 are provided on each side of the cut-out. Plastic balls 10 forced into the openings are heated to provide a semipermanent assembly.

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