Browse Prior Art Database

Microcircuit Delete Saw

IP.com Disclosure Number: IPCOM000101405D
Original Publication Date: 1990-Aug-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Chrzanowski, B: AUTHOR [+3]

Abstract

Disclosed is a device which allows a 2-mil-wide saw cut to be made between adjacent shorted circuits.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 76% of the total text.

Microcircuit Delete Saw

       Disclosed is a device which allows a 2-mil-wide saw cut
to be made between adjacent shorted circuits.

      The short-circuit removal can be easily done by positioning the
section of circuit to be repaired under the 2-mil-wide saw blade.

      The 2-mil width was the narrowest saw-blade width fabricated
and actually tried to date.  Alternate saw-blade widths are feasible.

      The device lowers the saw blade down to the surface to allow
operator alignment with the saw blade placed above the defective
shorted circuit to be cut.

      The operator lines up the x-x saw cut axis through the
alignmentguide cover slot.

      The device housing edge is used to align the y-y saw blade cut
axis.

      The operator touches the motor start button to set the saw
blade in motion.  The operator continues to press the button, and the
saw blade is brought down to make the shorted-circuit-delete saw cut.

      This device allows the removal of shorted circuits in the
repair of adjacent circuit configurations.  The minimum straight-line
saw cut is determined by the saw cut radius and depth of cut.  Depth
of cut through the various copper foils is preset with depth stop set
by the operator.

      The device allows consistently repeatable depth of cut. The saw
blade thickness may be varied in width to suit the circuit-delete
spacing criteria.

      The operator removes the device from the surface at completio...