Method of manufacturing a color display tube and a color display tube
US4964828A · kind A · utility
4Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/0772
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a color display tube comprising a display window having a display screen, a flat tensed shadow mask 2 in which the shadow mask 2 is provided with strips 9, 14, 15, 16, along its edges the color display tube has been assembled a test pattern is displayed on the display screen via the shadow mask 2, and certain strips are irradiated using an electron beam or a laser beam, to obtain a desired test pattern by aligning the shadow mask 2 relative to the display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.