Browse Prior Art Database

Dual Stage for Micro-Dispensing of Electronic Materials

IP.com Disclosure Number: IPCOM000117792D
Original Publication Date: 1996-Jun-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Menard, EB: AUTHOR

Abstract

Disclosed is a method to improve the cycle time of dispensing electronic assembly materials. The method uses two stages of motion, either separated and moving in opposite directions, or combined and moving in the same direction.

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

Dual Stage for Micro-Dispensing of Electronic Materials

      Disclosed is a method to improve the cycle time of dispensing
electronic assembly materials.  The method uses two stages of motion,
either separated and moving in opposite directions, or combined and
moving in the same direction.

      A typical application for micro-dispensing systems has multiple
component sites (1) spread across various locations on a substrate
(2), typically inches apart.  Each typical site has a tight pattern
of interconnect points (3), generally in an array or perimeter
pattern.  The interconnect points are commonly on the order of 0.005
- 0.050 inch apart, with the site being on the order of 0.5 - 2.0
inch square.

      The cycle time from droplet to droplet is reduced roughly
30% by adding a second XY stage (4) to the system.  The substrate is
mounted to the primary stage (5).  This stage is designed to travel
the length and width of the maximum size substrate to be processed.
The dispenser (6) is mounted to the secondary stage which is designed
to travel the length and width of the largest component pattern to be
processed.

      When dispensing within a component site, both stages travel in
opposite directions, stopping at each of the dispensing points.  For
matched accelerations, this doubles the acceleration of the dispenser
relative to the substrate, reducing the drop to drop cycle time by
1/(root 2).  When travelling from component site to component site,
t...