Field emission display having an invisible spacer and method
US6441559B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/8655
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission display (100) includes a cathode assembly (102), an anode plate (104), and a spacer (108), which extends between the cathode assembly (102) and the anode plate (104). The spacer (108) is comprised of a spacer material having a dielectric constant less than 100. A discharging period neutralizes positive electrical charge (244) and renders the spacer (108) invisible to a viewer of the field emission display (100). Operating a field emission display (100) to render a spacer (108) invisible by providing a cathode, assembly (102), an anode plate (104), and a spacer (108) comprised of a spacer material with a dielectric constant less than 100 and neutralizing positive electrical charge (244) on spacer (108).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.