Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2007-01-09
2007-01-09
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S2090SC, C315S276000, C315S224000, C315S312000, C345S102000, C345S077000, C345S212000
Reexamination Certificate
active
11020502
ABSTRACT:
A secondary winding W2of a step-up transformer of a self-excited inverter2is grounded at the midpoint thereof. High-frequency voltages differing in polarity from each other are outputted from both terminals OT1and OT2of the secondary winding W2. Two U-shaped cold-cathode tubes L1and L2series-connected to each other are provided directly below a liquid crystal panel. One of terminals of the secondary winding W2is connected to the terminal OT1through the ballast capacitor C1. The other terminal thereof is connected to the terminal OT2of the ballast capacitor C2. The connecting point P between the two U-shaped cold-cathode tubes L1and L2is ungrounded. Thus, electric currents flowing through the cold-cathode tubes are equal in value to each other.
REFERENCES:
patent: 6636190 (2003-10-01), Hirakata et al.
patent: 6822398 (2004-11-01), Murr et al.
patent: 6949893 (2005-09-01), Higuchi
patent: 6956556 (2005-10-01), Yajima et al.
patent: 2004/0232854 (2004-11-01), Chou
patent: 2005/0047174 (2005-03-01), Pan et al.
patent: 2000-124045 (2000-04-01), None
patent: 2002-43148 (2002-02-01), None
Miyamoto Hitoshi
Nishinosono Kazuo
Funai Electric Co. Ltd.
Philogene Haissa
LandOfFree
Backlight apparatus for liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Backlight apparatus for liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlight apparatus for liquid crystal display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3772320