Methods for continuously moving a fluid dispenser while dispensing amounts of a fluid material
US10646889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Sep 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods for applying fluid materials to a substrate, such as circuit board, while continuously moving the fluid dispenser are disclosed. Initially, a dispenser is continuously moved through a constant motion trajectory connecting the plurality of dispense locations on the substrate. The electrical output signals generated by one or more of encoders of the dispenser are monitored as the dispenser is continuously moved through the constant motion trajectory. The dispenser is triggered at each of the plurality of dispense locations and droplets of the fluid material are jetted while continuously moving the dispenser. The spatial coordinates of each droplet of the fluid material on the substrate are measured and compared to expected landing coordinates for each droplet of the fluid material to generate a spatial error for each droplet of the fluid material. At least one dispense location is corrected and an updated constant motion trajectory is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.