Inverter circuit, backlight device and liquid crystal display having the same
US8030858B2 · kind B2 · utility
0Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Dec 19, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter circuit for a backlight device includes an inverter transformer which supplies a high AC voltage to a plurality of discharge tubes, a filter circuit connected to an output terminal of the inverter transformer, and an abnormal discharge detection circuit. The filter circuit passes a current signal having a high frequency component of the high AC voltage to the abnormal discharge detection circuit, and the abnormal discharge detection circuit detects an abnormal discharge current based on the current signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.