Shaped cathode for a field emission arrangement
US10043649B2 · kind B2 · utility
0Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Nov 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J19/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a field emission lighting arrangement, comprising an anode and a cathode, where the shape of the cathode is selected based on the shape of a evacuated envelope in which the anode and cathode is provided. The inventive shape of cathode allows for an improved uniformity of an electric field provided between the anode and cathode during operation of the field emission lighting arrangement. The invention also relates to a corresponding method for selecting a shape of such a cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.