Electron emission device and display device for emitting electrons in response to an applied electric field using the electron emission device
US5962959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1998 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Mar 3, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y10/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emission device exhibits a high electron emission efficiency. The device includes an electron supply layer of metal or semiconductor, an insulator layer formed on the electron supply layer, and a thin-film metal electrode formed on the insulator layer. The insulator layer is made of a polycrystal dielectric substance and has a film thickness of 50 nm or greater and has a polycrystal phase with an average grain size of 5 to 100 nm as a major component and an amorphous phase as a minor component. When an electric field is applied between the electron supply layer and the thin-film metal electrode, the electron emission device emits electrons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.