Process for positioning spacer beads in flat display screens
US5558732A · kind A · utility
11Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Dec 23, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1798
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process is disclosed for positioning spacer beads on a plate of a flat display screen formed by two adjacent plates constituting a flat air-tight chamber. The method includes providing a hollow needle mounted on a mobile head which is connected to a vacuum/overpressure system. The hollow needle sucks a bead from a bead tank, applies the bead onto a plate covered with an adhesive material to adhere adhesive onto a section of the bead, then removes the bead from the plate. Finally, the needle deposits the bead onto one of the two adjacent plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.