Method for machining and depositing metallurgy on ceramic layers

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156344, 156247, 156256, 427282, 427272, 427287, 427269, B05D 132

Patent

active

055229638

ABSTRACT:
Method for thermally-machining large area features, and screen-depositing metallurgy on a ceramic dielectric greensheet. The method comprises an improvement over the conventional integrated disposable mask process, and involves the steps of outlining the large feature areas through a masking film laminated to a greensheet, using a high intensity energy beam such as a laser beam, electron beam, photon beam, etc, forming a stencil sheet having corresponding large area feature openings, and laminating the stencil sheet in registration over the masking film. An adhesive sheet is pressed against the back of the stencil sheet, through the stencil openings, to adhere to the outline features on the masking film and to remove them when the stencil sheet is separated from the masking film. Conductive paste is applied to the greensheet, through the large feature openings in the masking film, and the electroded greensheet is fired for use in preparing multi-layer ceramic packages.

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Martin et al., "Glass Mask Protection and Particulate Cleaning", IBM Technical Disclosure Bulletin.
Slayton, "Removal of Metal Masks by Ultrasonic Agitation", IBM Technical Disclosure Bulletin.

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