Microtip cathode with auxiliary insulating layer
US5808403A · kind A · utility
26Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microtip cathode for flat panel display screens has a constant access resistance and includes a substrate (10), a resistive layer (19), at least one cathode conductor (13), an insulating layer (16), and a control gate (3). The microtip cathode further includes an auxiliary insulating layer (18) disposed between the cathode conductor (13) and the insulating layer (16) to suppress needle hole effects in the insulating layer (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.