Browse Prior Art Database

Method for Marking Defect Coupons

IP.com Disclosure Number: IPCOM000115668D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Mahlbacher, JC: AUTHOR

Abstract

Disclosed is a method that uses an electrical probe tip to mark defects in circuit boards as they are found.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 67% of the total text.

Method for Marking Defect Coupons

      Disclosed is a method that uses an electrical probe tip to mark
defects in circuit boards as they are found.

      In prior art the typical means of marking the bad coupons
requires that an additional device be incorporated into the prober
equipment such as a laser or inker.

      An electrical prober used to identify defects in circuit boards
must be capable of marking defective sections of the board.  This can
be done by incorporating an inking device, laser, or other additional
mechanism.

      Circuit boards are electrically tested by probing systems to
identify defects.  These products are usually manufactured in a
modular fashion such that a board or panel contains multiple boards
or coupons of the same type.  When tested the manufacturer would like
to know which coupons within the panel are defective.  The defective
coupons are then discarded and the good coupons are saved.  It is,
therefore, a requirement that the defective coupons be marked by the
test equipment.

      Typical means of marking the bad coupons require that an
additional device be incorporated into the prober equipment such as a
laser or inker.  This adds cost and maintenance to the system.

      A simpler and less costly method is to utilize the probe
actuator which is already incorporated into the probing system to
mark the coupon.  These probe actuators are capable of marking the
coupon by virtue of the contact of the prob...