Flat CRT display apparatus
US4980613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Feb 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flat CRT apparatus has a set of vertical scanning deflection electrodes arrayed down one flat inner face of the CRT, spaced apart from an opposing face having a photo-emissive layer formed thereon, and an electron gun for emitting a single flat electron beam or a row of narrow line electron beams into the space between the scanning electrodes and the photo-emissive layer. Vertical scanning of a raster display is executed by scanning voltages sucessively applied to the scanning electrodes, with the deflected electron beams thus obtained being then horizontally swept in common by a horizontal deflection electrode, so that each electron beam is utilized to display a large number of picture elements of each horizontal scanning line of the display picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.