High luminance color picture element tubes
US4737683A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 27, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Mar 27, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/88
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to high luminant fluorescent color picture element tubes and display units of the same for large area or giant area display. A fluorescent picture element tube comprises a cathode, a control electrode, an anode, and a light output window. Several such color tubes may be arranged in line or matrix to construct a color picture element tube display unit representing one or more picture elements. The light emitted by the phosphor coated on the large area of the anode passes through the relatively small area of the light output window. A high luminance efficiency may also be obtained as the good heat dissipation of the anode. So higher light output can be obtained and the anode voltage can be reduced. The cost of large area or giant area display system using the tubes and units which have simple construction and lower drive voltage is greatly reduced. The display of monochrome, polychrome, color, and changeable color is also achievable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.