Light source display tube
US4972116A · kind A · utility
10Cited by
4References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2209/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source display tube arranged in matrix form in one plane as a unit element to constitute a large screen display device, where a stray path for electrons emitted from the cathode is eliminated, and concentration of the electric field of the control grid disturbing the electron flow is prevented, thereby pseudo light emission is prevented and electrical trouble is minimized in simple fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.