Cold-cathode electron source and field-emission display
US7078863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2001 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Oct 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cold-cathode electron source having an improved utilization efficiency of an electron beam and a simple structure. The cold-cathode electron source comprises a gate electrode (4) provided on a substrate (2) through an insulating layer (3) and an emitter (6) extending through the insulating layer (3) and the gate electrode (4) and disposed in an opening of the gate. During the emission of electrons from the emitter (6), the following relationships are satisfied: 10 [V/μm]≧(Va−Vg)/(Ha−Hg)≧Vg/Hg; and Vg/Hg [V/μm]≧Va×10−4×(9.7−1.3×1n(Hg))×(1000/Ha)0.5, where Ha [μm] is an anode-emitter distance, Va [V] is an anode-emitter voltage, Hg [μm] is a gate-emitter distance, and Vg [V] is a gate-emitter voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.