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Metallizing for Stability and Handling of Green Ceramic Sheet

IP.com Disclosure Number: IPCOM000082612D
Original Publication Date: 1975-Jan-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Desai, KS: AUTHOR

Abstract

Green sheet instability after screening is improved over the present techniques by the following process: (1) Punch locating holes in suitable release film (such as MYLAR*) (2) Screen metal ground plane onto the release film using a mask. (3) Dry metal paste on the film at 60 degrees C for 15 minutes. (4) Transfer the ground plane pattern by aligning the screened pattern onto the release film, using the locating holes and then laminating to the shiny surface of the green sheet. (5) Peel off the release film. (6) Punch via holes. (7) Screen metal paste into via holes using a mask. The amount of paste in the via holes is very small compared to the large plane pattern. Some via holes on the adjacent layers are also filled using the same method. The shrinkage will match with the via hole filled or signal plane layer.

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Metallizing for Stability and Handling of Green Ceramic Sheet

Green sheet instability after screening is improved over the present techniques by the following process: (1) Punch locating holes in suitable release film (such as MYLAR*) (2) Screen metal ground plane onto the release film using a mask. (3) Dry metal paste on the film at 60 degrees C for 15 minutes. (4) Transfer the ground plane pattern by aligning the screened pattern onto the release film, using the locating holes and then laminating to the shiny surface of the green sheet. (5) Peel off the release film. (6) Punch via holes. (7) Screen metal paste into via holes using a mask. The amount of paste in the via holes is very small compared to the large plane pattern. Some via holes on the adjacent layers are also filled using the same method. The shrinkage will match with the via hole filled or signal plane layer. * Trademark of E.I. du Pont de Nemours & Co.

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