Printing ink droplets and techniques for controlling fluid deposition in precision tolerances

摘要

A technique for measuring the amount of ink jet droplets used in organic light emitting diode device processing with advanced statistical accuracy, the use of a printing process for transferring droplets of fluid ink to the target region of the substrate with a fine number of quantities, and related methods, devices, and improvements And system.The ink printing process employs a droplet measurement and processing software per nozzle that ensures the compliance of the minimum and maximum ink filling, which is set by the specification to plan the combination of droplets to reach certain total ink filling per target area.Combinations of different droplets in different embodiments are generated through different printhead / substrate scan offsets, offset between print heads, use of different nozzle drive waveforms and / or other techniques.Fig. 8 (a)