Cathode ray tube with transparent metal oxide protective layer on phosphor screen
US4471262A · kind A · utility
6Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1982 |
| Grant date | Sep 11, 1984 |
| Priority date | — |
| Expiry date | Jun 10, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/124
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode ray tube having, a panel portion provided with a phosphor screen on its inner surface, a neck portion provided with an electron gun in its inner space, and a funnel portion combined with the panel portion and the neck portion to provide an envelope, in which the electron beam emitted from the electron gun scans the phosphor screen and produces images, and the images are observed from the beam scanning side of the phosphor screen. In the cathode ray tube a thin metal oxide layer is formed on the beam scanning side of the phosphor screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.