Electron emitter composition made of an electron emitting substance and an expansion material for expansion of the electron emitting substance
US7750544B2 · kind B2 · utility
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13References
6Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Mar 25, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/745
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides compositions of matter that contain an electron emitting substance and an expansion material. The expansion material may, for example, be an intercalation compound. When a film is formed from the composition, expansion of the expansion material typically causes rupturing or fracturing of the film. No further treatment of the surface of the film is typically required after expansion of the expansion material to obtain good emission properties. A surface formed from such a fractured film acts as an efficient electron field emitter and thus is useful in vacuum microelectronic devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.