Flat configuration image display apparatus
US5202609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1990 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Jan 31, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a flat configuration color display CRT in which one or more rows of electron beams are generated with the electron beams passing through respective apertures in successively disposed electrodes including horizontal deflection electrodes, apertures formed in an electrode positioned adjacent to the horizontal deflection electrodes have a central axis position displacement with respect to corresponding apertures of the horizontal deflection electrodes. A trajectory correction voltage which varies during each vertical scanning interval is applied to that adjacent electrode to execute dynamic adjustment of electron beam landing positions and thereby correct for an angular positioning error between a fluorescent layer pattern of the CRT and the electrode structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.