Built-in chip vacuum fluorescent display
US6737798B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A built-in chip vacuum fluorescent display including a vacuum tube having a transparent top substrate, a bottom substrate facing the top substrate with driver chip wirings while being spaced apart from the top substrate with a predetermined distance, and a side glass disposed between the top and the bottom substrates while interconnecting the top and the bottom substrates. A plurality of driver chips are mounted at the bottom substrate within the vacuum tube while being electrically connected to the driver chip wirings. At least one subsidiary substrate is provided at the space between the top and the bottom substrates within the vacuum tube while having wirings electrically connected to the driver chip wirings. Cathodes are provided between the subsidiary substrate and the top substrate within the vacuum tube to emit thermal electrons. Phosphors are patterned at the subsidiary substrate while being electrically connected to the wirings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.