Browse Prior Art Database

Multi Up Flip Chip Wafer Bank Feeder

IP.com Disclosure Number: IPCOM000123612D
Original Publication Date: 1999-Feb-01
Included in the Prior Art Database: 2005-Apr-05
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Disciullo, GJ: AUTHOR [+2]

Abstract

Disclosed is a means and machine to pick up flip microchips in the bumps up configuration from a stack of waffle trays, flip them, precisely locate them, and present them to a pick and place machine in a manner which is amenable to gang picking of the flip microchips. The machine is fully programmable to accept any configuration of waffle tray.

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

Multi Up Flip Chip Wafer Bank Feeder

   Disclosed is a means and machine to pick up flip microchips
in the bumps up configuration from a stack of waffle trays, flip
them, precisely locate them, and present them to a pick and place
machine in a manner which is amenable to gang picking of the flip
microchips.  The machine is fully programmable to accept any
configuration of waffle tray.

   The machine consists of the following described major
groups of components which are illustrated in the Figure.

   Waffle Tray Unstacking Mechanism (shown at 1 in the
Figure) serves as a buffer which can stack a multitude of waffle
trays.  One tray at a time is dispensed to the turnable mechanism as
the waffle trays get emptied out by the picking mechanism.  Turntable
(2) takes the waffle trays from the unstacking mechanism and
transfers the waffle tray to a position inside the machine at which
the chips contained in the waffle trays can be picked by the pick
head.  Pick Head (3) flips up flip chips from the waffle tray (by the
side which has bumps) and performs a 90 degree rotation of the chips.
They are then transmitted to the shuttle.

   Shuttle (4) aligns itself with the pick head, takes the
chips from the pick head and performs another 90 degree rotation of
the chips as it shuttles the chips inside the pick and place
machine.  The shuttle then places the chips on a table with a
centering mechanism (5).  The centering mechanism locates the chips
to allow precise recognition...