Process for fabricating high current field emission cathode containing nanomaterials
US12334296B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2024 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | May 31, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/30469
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High current field emission cathodes containing nanomaterials, and methods for their production, are provided. An exemplary method comprises forming an electrically resistive layer on a cathode substrate, forming an adhesion promoting layer on the electrically resistive layer, and forming an electron emissive layer including nanomaterials on the adhesion promoting layer. Forming each layer can include depositing a suitable mixture followed by a heating process including three firing cycles. Deposition can be performed by electrophoretic deposition or a printing technique. The layers can be patterned to form islands separated by well-defined gaps on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.