METHODS FOR CONTINUOUSLY MOVING A FLUID DISPENSER WHILE DISPENSING AMOUNTS OF A FLUID MATERIAL

摘要

Methods for applying fluid materials to a substrate, such as circuit board, while continuously moving the fluid dispenser. Some methods generally involve correcting the dispense location for each of the dispensed amounts of fluid material by executing a statistical comparison of either the predicted and actual landing locations on the substrate, or the predicted and actual positions of the dispenser at each of the dispense locations. Other methods generally involve initiating the dispensing of amounts of the fluid material at dispense locations corrected by a correction factor specified in terms of the servo cycle for the movement of the dispenser or by a correction factor specified in terms of partial servo cycles courtesy of a timer.

主权项

1. A method of operating a dispenser within a jetting system to dispense droplets of a fluid material at discrete dispense locations on each of a plurality of substrates, the method comprising:
storing coordinates of all of the discrete dispense locations in a dispense location map and using the coordinates to create a single continuous motion path through all of the discrete dispense locations, with the single continuous motion path including directional changes and at least one nonlinear path segment; creating a corrected single continuous motion path through all of the discrete dispense locations; moving each substrate to a fixed position in the jetting system; and continuously moving the dispenser along the corrected single continuous motion path while changing directions, while depositing the droplets of the fluid material from the dispenser onto all of the discrete dispense locations of the dispense location map on each substrate, wherein prior to arriving at each discrete dispense location, a control signal is provided to the dispenser to initiate dispensing of each droplet.