Image-forming apparatus and method of driving the same
US6005540A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Oct 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/8655
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of electron-emitting devices carried on a device substrate are arranged vis-a-vis an acceleration electrode carried on a face plate. The device substrate and the face plate, together with side walls disposed therebetween, constitute an envelope the inner space of which is kept under vacuum. A number of spacers are also disposed between the device substrate and the face plate within the inner space. The electric potential V.sub.a applied to the acceleration electrode, the distance l between the electron-emitting devices and the corresponding respective spacers, and the distance d between the electron-emitting devices and the acceleration electrode satisfy the relationship, V.sub.a .multidot.l.sup.2 /d.sup.2 >.vertline..DELTA.V.sub.sat .vertline./(2.multidot..alpha..multidot..beta.), where .alpha. and .beta. are constants determined from several factors and .DELTA.V.sub.sat is the potential deviation of the spacer surface under charged conditions from that under uncharged conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.