Abstract: An improved bonding strip for a printed circuit to facilitate quality inspection. The bonding strip has functional regions and non-functional regions. A functional region is indicated by an area of the bonding strip having a first dimension in width. A non-functional region is indicated by an area of the bonding strip having a second dimension in width. The first dimension may be either wider or narrower than the second dimension.
Type:
Grant
Filed:
January 10, 2001
Date of Patent:
February 4, 2003
Assignee:
International Business Machines Corporation
Inventors:
Marshall L. Brown, James A. Busby, Raymond A. Phillips, Jr., John A. Potenza, Jirina D. Shupp, J. Robert Young
Abstract: A method of making an electrically conductive contact on a substrate by applying a layer of solder paste to a circuitized feature on a substrate and selectively heating and melting the solder paste over the feature to form a solder bump. The excess solder paste is removed. A focused energy heat source such as a laser beam or focused Infrared heats the solder paste. A reflective mask with apertures may be used to allow focused heating source to selectively melt areas of the solder paste layer applied to a circuitized feature. The mask and excess solder paste are removed.
Type:
Grant
Filed:
June 12, 2001
Date of Patent:
February 4, 2003
Assignee:
International Business Machines Corporation
Abstract: A method of making a circuitized substrate wherein a chip-accommodating cavity is formed along with a plurality of conductive elements (e.g., pads, lines, etc.) which form part of the substrate's circuitry. Metallization is facilitated by the use of a photoimageable member that allows for initial removal (peeling) of its sacrificial layer, followed by eventual removal of the photoimaging layer which also forms part of this member. Exposure of the photoimaging layer may occur either through the protective sacrificial layer or subsequent removal thereof.
Type:
Grant
Filed:
January 13, 2000
Date of Patent:
May 1, 2001
Assignee:
International Business Machines Corporation
Inventors:
Anilkumar Chinuprasad Bhatt, Thomas Richard Miller, Allen Frederick Moring, James Paul Walsh