High performance low cost interconnections for flip chip attachment with electrically conductive adhesive. Final report Page: 130 of 205

                                
SECTION III: AUTOMATED TESTBED
A.    System    Overview
The Automated Testbed was built for the concurrent development and characterization of the PMC
bumped chip to board assembly process and equipment. The design goals included the flexibility to adapt
the equipment assembly and process monitoring capabilities.
Figure 1 shows the front view of the system. The system is built upon a 4 foot x 5 foot optical
breadboard top. Underneath the table are two 19 inch rackmount cabinets. One of the cabinets has a 166
MHz industrial PC as the host controller and an AISI 3500 vision engine. The other cabinet has thermode
driver heater cards for the upper and lower bonder heating systems as well as the system power supply.
Next to the cabinets is the X-Y table servo amplifier, and various solenoid valves and regulators for the
control of the pneumatic system.
Mounted to the top surface of the optical table is a stiff overhead beam to which a downward viewing,
substrate location camera and a PMC Bonding Head are separately mounted. The Bonding Head consists
of a theta axis for component rotation, a downward Z axis travel/force drive, and the component pick
up/heating tool. On the table, directly underneath the bonding head, is a two-position shuttle driven by a
pneumatic actuator. The shuttle carries and positions the component viewing illuminator/camera, and the
lower board support/ heating tool directly underneath the component pick up tool.
Upward Looking Camera  ECA Bonding    Downwari Looking
And Board Support    Head             Camera
Subsystem
Yiain  lonitiri  Cootral loailor
Board Pressure                                                               Board Support
Control Pneumatics                                                           B r Positiuong
E-Stop                                                                       System
panel                                                                      Gantry Frame Structure
Computer --
Keyboard Support
1/0 - Pneumatic          IBase Frame
Panel
Power Supply
K-T Table Amplifier
Vision Engine  Tbermode  eater
River Cards
Figure 1 Front View of the Automated PMC Chip Bonding Test System

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