Lateral field emission device
US7839070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Aug 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission device has pixels with cathode and anode provided on the same plane, so that electrons directly penetrate an independently provided fluorescent powder layer to produce light, giving the display the advantages of easy focusing, no dark spots, high brightness, and enhanced light emitting performance. Since the light produced by the fluorescent powder layer is not blocked by the anode, the problem of charge accumulation on the fluorescent powder layer is avoided, and it is not necessary to use expensive light-transmittable conducting glass as the anode. With the cathode and the anode located at the same plane, it is not necessary to use a high precision spacer to maintain a fixed distance between the cathode and the anode, enabling the device to be manufactured at reduced cost and high good yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.