Adhesive with tunable porosity and methods to support temporary bonding applications

US20160017184A1Inactive Publication Date: 2016-01-21MOORE JOHN
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Patent Information

Authority / Receiving Office
US ยท United States
Current Assignee / Owner
MOORE JOHN
Publication Date
2016-01-21
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

Compositions and methods are described for a temporary adhesive used to affix a work unit onto a carrier substrate whereby its porosity is tuned by choosing and adjusting the polymeric resin and filler components to provide sufficient adhesion to support a manufacturing process, and upon completion, there is advanced penetration of a liquid into the interfacial bond causing release of the work unit without harm. The temporary adhesive provides a tunable porosity that is dependent upon the mathematical calculation of the weight basis ratio of filler to binder, that is preferably greater than 0.4, more preferably greater than 1.0, and most preferably greater than 2.0. The temporary adhesive may be applied and cured in a variety of ways that meet the needs of the form of the work unit and objectives of the manufacturing process. The invention provides benefits of flexibility and reduced cost when establishing practices to handle difficult work units in the manufacture of semiconductors and flat panel displays.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of U.S. Provisional Application No. 61 / 773,766, filed Mar. 6, 2013.FIELD OF THE INVENTION

[0002] The present invention relates generally to a porous adhesive that is used to affix a work unit to hard and rigid carrier substrate and sufficiently holds the work unit in place to support several manufacturing steps whereby they are subsequently released within a short time period by liquid penetration without observable harm to the integrity of the work unit or carrier substrate. In particular, the porous adhesive comprises an adjustable mixture of binder and filler chemistry to affix a work unit to a carrier substrate such that it satisfies the physical, thermal, and chemical effects of a manufacturing process and subsequently allows easy and fast separation of the respective substrates by liquid capillary penetration without observable damage. The value and importance of a tunable adhesive for temporary bond...

Claims

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