Fluorescent display tube wherein grid electrodes are formed on ribs contacting fluorescent segments, and process of manufacturing the display tube
US5568012A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 22, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Aug 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent display tube including a substrate, a plurality of anodes formed on the substrate, fluorescent layers formed on the respective anodes, cathodes located above the fluorescent layers to generate electrons which strike the fluorescent layers, ribs formed of an electrically insulating material on the substrate so as to surround at least a portion of a periphery of each of the anodes and having a larger height from the substrate than the fluorescent layers, and grid electrodes formed on the respective ribs to control activation of the fluorescent layers. Each rib consists of a plurality of layers laminated by screen printing using a paste which includes the electrically insulating material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.