Method for improving uniformity of emission current of a field emission device
US6645028B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y10/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for improving uniformity of emission current of a field emission display (100) includes the step of providing a first carbon nanotube (119) and a second carbon nanotube (118), which at least partially define an electron emitter (116). First carbon nantotube (119) is characterized by a first emission current capability and second carbon nanotube (118) is characterized by a second emission current capability, which is less than the first emission current capability. The method further includes the steps of causing first carbon nanotube (119) to be reduced in length at a first rate and, concurrently, causing second carbon nanotube (118) to be reduced in length at a second rate, which is less than the first rate and can be equal to zero, thereby reducing the difference between the second emission current capability and the first emission current capability and, thus, improving uniformity of emission current. The selective reductions in length are preferably achieved by performing the step of causing a burn-in current to be emitted by electron emitter (116).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.