FLUID DISPENSERS AND METHODS FOR DISPENSING VISCOUS FLUIDS WITH IMPROVED EDGE DEFINITION

摘要

Fluid dispensers (10,12,14) and methods for dispensing viscous fluids with improved edge definition. Pressurized fluid is periodically supplied in pulses to nozzles (80) in a nozzle plate (18) of a dispensing head as the dispensing head is moved by a multi-axis stage relative to a stationary substrate. Droplets are discharged from the nozzles (80) and impact on the substrate. The droplets coalesce together to define the coating. The discharge from one or more groups of nozzles (80) can be temporarily suspended to avoid coating a component or area on the substrate (120) while adjacent areas continue to receive droplets of the fluid.