MIM cold-cathode electron emission elements
US5202605A · kind A · utility
7Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/312
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An MIM type of electron emission element having a thin insulating film formed below an electron emission region of a metal layer, with that electron emission region of the metal layer consisting of an array of thick and thin portions, distributed throughout the electron emission region. Improved efficiency and uniformity of of emission are obtained, due to the low resistance of the thick portions, which apply a supply voltage to the thin portions of the metal layer, while the thin portions can be made sufficiently thin to maximize the electron emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.