Electron-emitting device manufacturing method and apparatus, driving method, and adjusting method
US6409563B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In manufacturing or adjusting an electron-emitting device which has at least two electrodes and emits electrons by applying a voltage between the two electrodes, or before performing normal driving, a voltage V1 is applied which has the following relationship with a maximum voltage value V2 applied as a normal driving voltage to the electron-emitting device between the two electrodes. Giving a current I flowing upon application of a voltage V when the voltage V falling within a voltage range causing electron emission upon application of the voltage between the two electrodes is applied between the two electrodes:I=f(V)and letting f′(V) be the differential coefficient of f(V) at the voltage V, the voltage V1 has a relationship with the voltage V2 that satisfies, upon application of the voltage, the first condition:f(V1)/{V1·f′(V1)−2f(V1)}>f(V2)/{V2·f′(V2)−2f(V2)}Further, letting Xn-1 be the value of the right side of inequality (2) upon a first application of the pulse-like voltage V2 when the voltage V2 is applied as pulses successively twice between the two electrodes after application of the voltage V1, and Xn be the value of the right …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.