Flat fluorescent lamp with improved discharge efficiency
US7259518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2004 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Aug 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a flat fluorescent lamp which improves discharge efficiency and luminance with an increase of a current density per discharge channel by forming multiple discharge channels of an independent serpentine layout and an exhaust channel and minimizes non-light emitting regions caused from the external electrode. The flat fluorescent lamp comprises: side walls for forming closed spaces between a front substrate and a rear substrate; partitions formed on the rear substrate and for forming multiple discharge channels of an independent serpentine layout; an exhaust channel formed on the rear substrate, connected to the respective discharge channels and used for vacuum exhaustion or discharge gas injection; and discharge electrodes arranged on both opposite ends of the starting and ending points of the multiple discharge channels of an independent serpentine layout and for discharging the discharge channels in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.